diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h index 75aec32982..0717a3ac54 100644 --- a/Marlin/Configuration_adv.h +++ b/Marlin/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/Marlin/src/gcode/config/M301.cpp b/Marlin/src/gcode/config/M301.cpp index 25a15d7728..0449293bf5 100644 --- a/Marlin/src/gcode/config/M301.cpp +++ b/Marlin/src/gcode/config/M301.cpp @@ -38,6 +38,10 @@ * * C[float] Kc term * L[int] LPQ length + * + * With PID_FAN_SCALING: + * + * F[float] Kf term */ void GcodeSuite::M301() { @@ -56,6 +60,10 @@ void GcodeSuite::M301() { NOLESS(thermalManager.lpq_len, 0); #endif + #if ENABLED(PID_FAN_SCALING) + if (parser.seen('F')) PID_PARAM(Kf, e) = parser.value_float(); + #endif + thermalManager.updatePID(); SERIAL_ECHO_START(); #if ENABLED(PID_PARAMS_PER_HOTEND) @@ -65,9 +73,12 @@ void GcodeSuite::M301() { " i:", unscalePID_i(PID_PARAM(Ki, e)), " d:", unscalePID_d(PID_PARAM(Kd, e))); #if ENABLED(PID_EXTRUSION_SCALING) - //Kc does not have scaling applied above, or in resetting defaults SERIAL_ECHOPAIR(" c:", PID_PARAM(Kc, e)); #endif + #if ENABLED(PID_FAN_SCALING) + SERIAL_ECHOPAIR(" f:", PID_PARAM(Kf, e)); + #endif + SERIAL_EOL(); } else diff --git a/Marlin/src/inc/SanityCheck.h b/Marlin/src/inc/SanityCheck.h index 5504ae64ca..eb003a5b63 100644 --- a/Marlin/src/inc/SanityCheck.h +++ b/Marlin/src/inc/SanityCheck.h @@ -229,6 +229,8 @@ #error "LCD_PIN_RESET is now LCD_RESET_PIN. Please update your pins definitions." #elif defined(EXTRUDER_0_AUTO_FAN_PIN) || defined(EXTRUDER_1_AUTO_FAN_PIN) || defined(EXTRUDER_2_AUTO_FAN_PIN) || defined(EXTRUDER_3_AUTO_FAN_PIN) #error "EXTRUDER_[0123]_AUTO_FAN_PIN is now E[0123]_AUTO_FAN_PIN. Please update your Configuration_adv.h." +#elif defined(PID_FAN_SCALING) && FAN_COUNT <= 0 + #error "PID_FAN_SCALING needs at least one fan enabled." #elif defined(min_software_endstops) || defined(max_software_endstops) #error "(min|max)_software_endstops are now (MIN|MAX)_SOFTWARE_ENDSTOPS. Please update your configuration." #elif ENABLED(Z_PROBE_SLED) && defined(SLED_PIN) diff --git a/Marlin/src/lcd/menu/menu_advanced.cpp b/Marlin/src/lcd/menu/menu_advanced.cpp index 0a84f7b5c1..85cd0ccf61 100644 --- a/Marlin/src/lcd/menu/menu_advanced.cpp +++ b/Marlin/src/lcd/menu/menu_advanced.cpp @@ -289,7 +289,7 @@ void menu_cancelobject(); // #if ENABLED(PID_EDIT_MENU) - #define _PID_BASE_MENU_ITEMS(N) \ + #define __PID_BASE_MENU_ITEMS(N) \ raw_Ki = unscalePID_i(PID_PARAM(Ki, N)); \ raw_Kd = unscalePID_d(PID_PARAM(Kd, N)); \ EDIT_ITEM_N(float52sign, N, MSG_PID_P_E, &PID_PARAM(Kp, N), 1, 9990); \ @@ -297,9 +297,17 @@ void menu_cancelobject(); EDIT_ITEM_N(float52sign, N, MSG_PID_D_E, &raw_Kd, 1, 9990, []{ copy_and_scalePID_d(N); }) #if ENABLED(PID_EXTRUSION_SCALING) + #define _PID_BASE_MENU_ITEMS(N) \ + __PID_BASE_MENU_ITEMS(N); \ + EDIT_ITEM_N(float3, N, MSG_PID_C_E, &PID_PARAM(Kc, N), 1, 9990) + #else + #define _PID_BASE_MENU_ITEMS(N) __PID_BASE_MENU_ITEMS(N) + #endif + + #if ENABLED(PID_FAN_SCALING) #define _PID_EDIT_MENU_ITEMS(N) \ _PID_BASE_MENU_ITEMS(N); \ - EDIT_ITEM_N(float3, N, MSG_PID_C_E, &PID_PARAM(Kc, N), 1, 9990) + EDIT_ITEM(float3, PID_LABEL(MSG_PID_F,N), &PID_PARAM(Kf, N), 1, 9990) #else #define _PID_EDIT_MENU_ITEMS(N) _PID_BASE_MENU_ITEMS(N) #endif diff --git a/Marlin/src/module/configuration_store.cpp b/Marlin/src/module/configuration_store.cpp index eef20f5f53..111d4898b5 100644 --- a/Marlin/src/module/configuration_store.cpp +++ b/Marlin/src/module/configuration_store.cpp @@ -37,7 +37,7 @@ */ // Change EEPROM version if the structure changes -#define EEPROM_VERSION "V72" +#define EEPROM_VERSION "V73" #define EEPROM_OFFSET 100 // Check the integrity of data offsets. @@ -242,7 +242,7 @@ typedef struct SettingsDataStruct { // // PIDTEMP // - PIDC_t hotendPID[HOTENDS]; // M301 En PIDC / M303 En U + PIDCF_t hotendPID[HOTENDS]; // M301 En PIDCF / M303 En U int16_t lpq_len; // M301 L // @@ -785,13 +785,14 @@ void MarlinSettings::postprocess() { { _FIELD_TEST(hotendPID); HOTEND_LOOP() { - PIDC_t pidc = { + PIDCF_t pidcf = { PID_PARAM(Kp, e), unscalePID_i(PID_PARAM(Ki, e)), unscalePID_d(PID_PARAM(Kd, e)), - PID_PARAM(Kc, e) + PID_PARAM(Kc, e), + PID_PARAM(Kf, e) }; - EEPROM_WRITE(pidc); + EEPROM_WRITE(pidcf); } _FIELD_TEST(lpq_len); @@ -1586,16 +1587,19 @@ void MarlinSettings::postprocess() { // { HOTEND_LOOP() { - PIDC_t pidc; - EEPROM_READ(pidc); + PIDCF_t pidcf; + EEPROM_READ(pidcf); #if ENABLED(PIDTEMP) - if (!validating && pidc.Kp != DUMMY_PID_VALUE) { + if (!validating && pidcf.Kp != DUMMY_PID_VALUE) { // Scale PID values since EEPROM values are unscaled - PID_PARAM(Kp, e) = pidc.Kp; - PID_PARAM(Ki, e) = scalePID_i(pidc.Ki); - PID_PARAM(Kd, e) = scalePID_d(pidc.Kd); + PID_PARAM(Kp, e) = pidcf.Kp; + PID_PARAM(Ki, e) = scalePID_i(pidcf.Ki); + PID_PARAM(Kd, e) = scalePID_d(pidcf.Kd); #if ENABLED(PID_EXTRUSION_SCALING) - PID_PARAM(Kc, e) = pidc.Kc; + PID_PARAM(Kc, e) = pidcf.Kc; + #endif + #if ENABLED(PID_FAN_SCALING) + PID_PARAM(Kf, e) = pidcf.Kf; #endif } #endif @@ -2446,6 +2450,10 @@ void MarlinSettings::reset() { #if ENABLED(PID_EXTRUSION_SCALING) PID_PARAM(Kc, e) = DEFAULT_Kc; #endif + + #if ENABLED(PID_FAN_SCALING) + PID_PARAM(Kf, e) = DEFAULT_Kf; + #endif } #endif @@ -3003,6 +3011,9 @@ void MarlinSettings::reset() { SERIAL_ECHOPAIR(" C", PID_PARAM(Kc, e)); if (e == 0) SERIAL_ECHOPAIR(" L", thermalManager.lpq_len); #endif + #if ENABLED(PID_FAN_SCALING) + SERIAL_ECHOPAIR(" F", PID_PARAM(Kf, e)); + #endif SERIAL_EOL(); } #endif // PIDTEMP diff --git a/Marlin/src/module/temperature.cpp b/Marlin/src/module/temperature.cpp index 57c8b76671..9c9037bd57 100644 --- a/Marlin/src/module/temperature.cpp +++ b/Marlin/src/module/temperature.cpp @@ -872,6 +872,15 @@ void Temperature::min_temp_error(const heater_ind_t heater) { } #endif // PID_EXTRUSION_SCALING + #if ENABLED(PID_FAN_SCALING) + if (thermalManager.fan_speed[active_extruder] > PID_FAN_SCALING_MIN_SPEED) { + work_pid[ee].Kf = PID_PARAM(Kf, ee) + (PID_FAN_SCALING_LIN_FACTOR) * thermalManager.fan_speed[active_extruder]; + pid_output += work_pid[ee].Kf; + } + //pid_output -= work_pid[ee].Ki; + //pid_output += work_pid[ee].Ki * work_pid[ee].Kf + #endif // PID_FAN_SCALING + LIMIT(pid_output, 0, PID_MAX); } temp_dState[ee] = temp_hotend[ee].celsius; diff --git a/Marlin/src/module/temperature.h b/Marlin/src/module/temperature.h index e3d7c2498e..4eff4e4f62 100644 --- a/Marlin/src/module/temperature.h +++ b/Marlin/src/module/temperature.h @@ -55,15 +55,23 @@ typedef enum : int8_t { // PID storage typedef struct { float Kp, Ki, Kd; } PID_t; typedef struct { float Kp, Ki, Kd, Kc; } PIDC_t; -#if ENABLED(PID_EXTRUSION_SCALING) - typedef PIDC_t hotend_pid_t; - #if LPQ_MAX_LEN > 255 - typedef uint16_t lpq_ptr_t; +typedef struct { float Kp, Ki, Kd, Kf; } PIDF_t; +typedef struct { float Kp, Ki, Kd, Kc, Kf; } PIDCF_t; + +typedef + #if BOTH(PID_EXTRUSION_SCALING, PID_FAN_SCALING) + PIDCF_t + #elif ENABLED(PID_EXTRUSION_SCALING) + PIDC_t + #elif ENABLED(PID_FAN_SCALING) + PIDF_t #else - typedef uint8_t lpq_ptr_t; + PID_t #endif -#else - typedef PID_t hotend_pid_t; +hotend_pid_t; + +#if ENABLED(PID_EXTRUSION_SCALING) + typedef IF<(LPQ_MAX_LEN > 255), uint16_t, uint8_t>::type lpq_ptr_t; #endif #define DUMMY_PID_VALUE 3000.0f @@ -77,6 +85,12 @@ typedef struct { float Kp, Ki, Kd, Kc; } PIDC_t; #else #define _PID_Kc(H) 1 #endif + + #if ENABLED(PID_FAN_SCALING) + #define _PID_Kf(H) Temperature::temp_hotend[H].pid.Kf + #else + #define _PID_Kf(H) 0 + #endif #else #define _PID_Kp(H) DUMMY_PID_VALUE #define _PID_Ki(H) DUMMY_PID_VALUE diff --git a/config/default/Configuration_adv.h b/config/default/Configuration_adv.h index 75aec32982..0717a3ac54 100644 --- a/config/default/Configuration_adv.h +++ b/config/default/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/3DFabXYZ/Migbot/Configuration_adv.h b/config/examples/3DFabXYZ/Migbot/Configuration_adv.h index 3fedc61c05..f6e0e67bf7 100644 --- a/config/examples/3DFabXYZ/Migbot/Configuration_adv.h +++ b/config/examples/3DFabXYZ/Migbot/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/ADIMLab/Gantry v1/Configuration_adv.h b/config/examples/ADIMLab/Gantry v1/Configuration_adv.h index 74a8115e6c..ddc6418ded 100644 --- a/config/examples/ADIMLab/Gantry v1/Configuration_adv.h +++ b/config/examples/ADIMLab/Gantry v1/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/ADIMLab/Gantry v2/Configuration_adv.h b/config/examples/ADIMLab/Gantry v2/Configuration_adv.h index a5bd118fe9..feb2bf655f 100644 --- a/config/examples/ADIMLab/Gantry v2/Configuration_adv.h +++ b/config/examples/ADIMLab/Gantry v2/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/AlephObjects/TAZ4/Configuration_adv.h b/config/examples/AlephObjects/TAZ4/Configuration_adv.h index 6c85ba864f..c9102adff8 100644 --- a/config/examples/AlephObjects/TAZ4/Configuration_adv.h +++ b/config/examples/AlephObjects/TAZ4/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Alfawise/U20-bltouch/Configuration_adv.h b/config/examples/Alfawise/U20-bltouch/Configuration_adv.h index 538a78ed61..5e2d69cf3b 100644 --- a/config/examples/Alfawise/U20-bltouch/Configuration_adv.h +++ b/config/examples/Alfawise/U20-bltouch/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Alfawise/U20/Configuration_adv.h b/config/examples/Alfawise/U20/Configuration_adv.h index d7190b459e..4378e881ce 100644 --- a/config/examples/Alfawise/U20/Configuration_adv.h +++ b/config/examples/Alfawise/U20/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/AliExpress/UM2pExt/Configuration_adv.h b/config/examples/AliExpress/UM2pExt/Configuration_adv.h index 7108ce3056..6b222a3606 100644 --- a/config/examples/AliExpress/UM2pExt/Configuration_adv.h +++ b/config/examples/AliExpress/UM2pExt/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Anet/A2/Configuration_adv.h b/config/examples/Anet/A2/Configuration_adv.h index 07789311d6..0877df9123 100644 --- a/config/examples/Anet/A2/Configuration_adv.h +++ b/config/examples/Anet/A2/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Anet/A2plus/Configuration_adv.h b/config/examples/Anet/A2plus/Configuration_adv.h index 07789311d6..0877df9123 100644 --- a/config/examples/Anet/A2plus/Configuration_adv.h +++ b/config/examples/Anet/A2plus/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Anet/A6/Configuration_adv.h b/config/examples/Anet/A6/Configuration_adv.h index 237126ddc7..237b4f04f0 100644 --- a/config/examples/Anet/A6/Configuration_adv.h +++ b/config/examples/Anet/A6/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Anet/A8/Configuration_adv.h b/config/examples/Anet/A8/Configuration_adv.h index b89a92b55b..78779f071e 100644 --- a/config/examples/Anet/A8/Configuration_adv.h +++ b/config/examples/Anet/A8/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Anet/A8plus/Configuration_adv.h b/config/examples/Anet/A8plus/Configuration_adv.h index 1b37696076..d59f89b1de 100644 --- a/config/examples/Anet/A8plus/Configuration_adv.h +++ b/config/examples/Anet/A8plus/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Anet/E16/Configuration_adv.h b/config/examples/Anet/E16/Configuration_adv.h index 0cdcf539c1..b0912b3500 100644 --- a/config/examples/Anet/E16/Configuration_adv.h +++ b/config/examples/Anet/E16/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/AnyCubic/i3/Configuration_adv.h b/config/examples/AnyCubic/i3/Configuration_adv.h index 027ea1ca08..077a2c5f0e 100644 --- a/config/examples/AnyCubic/i3/Configuration_adv.h +++ b/config/examples/AnyCubic/i3/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/ArmEd/Configuration_adv.h b/config/examples/ArmEd/Configuration_adv.h index 456f76e827..b7394506be 100644 --- a/config/examples/ArmEd/Configuration_adv.h +++ b/config/examples/ArmEd/Configuration_adv.h @@ -201,6 +201,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/BIBO/TouchX/cyclops/Configuration_adv.h b/config/examples/BIBO/TouchX/cyclops/Configuration_adv.h index e0cfe67ac7..4cf9824a73 100644 --- a/config/examples/BIBO/TouchX/cyclops/Configuration_adv.h +++ b/config/examples/BIBO/TouchX/cyclops/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/BIBO/TouchX/default/Configuration_adv.h b/config/examples/BIBO/TouchX/default/Configuration_adv.h index 2177ae283e..4c459ab463 100644 --- a/config/examples/BIBO/TouchX/default/Configuration_adv.h +++ b/config/examples/BIBO/TouchX/default/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/BQ/Hephestos/Configuration_adv.h b/config/examples/BQ/Hephestos/Configuration_adv.h index 8268d05678..b3bc3c2ce3 100644 --- a/config/examples/BQ/Hephestos/Configuration_adv.h +++ b/config/examples/BQ/Hephestos/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/BQ/Hephestos_2/Configuration_adv.h b/config/examples/BQ/Hephestos_2/Configuration_adv.h index 6f8dd26bc4..26482ce44d 100644 --- a/config/examples/BQ/Hephestos_2/Configuration_adv.h +++ b/config/examples/BQ/Hephestos_2/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/BQ/WITBOX/Configuration_adv.h b/config/examples/BQ/WITBOX/Configuration_adv.h index 8268d05678..b3bc3c2ce3 100644 --- a/config/examples/BQ/WITBOX/Configuration_adv.h +++ b/config/examples/BQ/WITBOX/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Cartesio/Configuration_adv.h b/config/examples/Cartesio/Configuration_adv.h index b39bd7ac45..88fe81eff3 100644 --- a/config/examples/Cartesio/Configuration_adv.h +++ b/config/examples/Cartesio/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Creality/CR-10/Configuration_adv.h b/config/examples/Creality/CR-10/Configuration_adv.h index 95436818d0..3b565345ff 100644 --- a/config/examples/Creality/CR-10/Configuration_adv.h +++ b/config/examples/Creality/CR-10/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Creality/CR-10S/Configuration_adv.h b/config/examples/Creality/CR-10S/Configuration_adv.h index 0d897b12c9..9cc92fe441 100644 --- a/config/examples/Creality/CR-10S/Configuration_adv.h +++ b/config/examples/Creality/CR-10S/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Creality/CR-10_5S/Configuration_adv.h b/config/examples/Creality/CR-10_5S/Configuration_adv.h index a9ae867990..c83327f0d6 100644 --- a/config/examples/Creality/CR-10_5S/Configuration_adv.h +++ b/config/examples/Creality/CR-10_5S/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Creality/CR-10mini/Configuration_adv.h b/config/examples/Creality/CR-10mini/Configuration_adv.h index b665797d24..056b8b42b6 100644 --- a/config/examples/Creality/CR-10mini/Configuration_adv.h +++ b/config/examples/Creality/CR-10mini/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Creality/CR-20 Pro/Configuration_adv.h b/config/examples/Creality/CR-20 Pro/Configuration_adv.h index 597b3e62b7..fc71e44766 100644 --- a/config/examples/Creality/CR-20 Pro/Configuration_adv.h +++ b/config/examples/Creality/CR-20 Pro/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Creality/CR-20/Configuration_adv.h b/config/examples/Creality/CR-20/Configuration_adv.h index 1907e05a62..f390ef926a 100644 --- a/config/examples/Creality/CR-20/Configuration_adv.h +++ b/config/examples/Creality/CR-20/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Creality/CR-8/Configuration_adv.h b/config/examples/Creality/CR-8/Configuration_adv.h index d176cfc97c..a6aa9683b6 100644 --- a/config/examples/Creality/CR-8/Configuration_adv.h +++ b/config/examples/Creality/CR-8/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Creality/Ender-2/Configuration_adv.h b/config/examples/Creality/Ender-2/Configuration_adv.h index 533e953c32..58c2747559 100644 --- a/config/examples/Creality/Ender-2/Configuration_adv.h +++ b/config/examples/Creality/Ender-2/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Creality/Ender-3/Configuration_adv.h b/config/examples/Creality/Ender-3/Configuration_adv.h index a8ef0404aa..fbc88da5ca 100644 --- a/config/examples/Creality/Ender-3/Configuration_adv.h +++ b/config/examples/Creality/Ender-3/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Creality/Ender-4/Configuration_adv.h b/config/examples/Creality/Ender-4/Configuration_adv.h index a10a9bda99..18ea1bc67c 100644 --- a/config/examples/Creality/Ender-4/Configuration_adv.h +++ b/config/examples/Creality/Ender-4/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Creality/Ender-5/Configuration_adv.h b/config/examples/Creality/Ender-5/Configuration_adv.h index dc736a694b..7fcfa0ea49 100644 --- a/config/examples/Creality/Ender-5/Configuration_adv.h +++ b/config/examples/Creality/Ender-5/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Dagoma/Disco Ultimate/Configuration_adv.h b/config/examples/Dagoma/Disco Ultimate/Configuration_adv.h index 0b585f7018..df8258fee1 100644 --- a/config/examples/Dagoma/Disco Ultimate/Configuration_adv.h +++ b/config/examples/Dagoma/Disco Ultimate/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/EVNOVO (Artillery)/Sidewinder X1/Configuration_adv.h b/config/examples/EVNOVO (Artillery)/Sidewinder X1/Configuration_adv.h index 58fbde656d..8957ef0602 100755 --- a/config/examples/EVNOVO (Artillery)/Sidewinder X1/Configuration_adv.h +++ b/config/examples/EVNOVO (Artillery)/Sidewinder X1/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Einstart-S/Configuration_adv.h b/config/examples/Einstart-S/Configuration_adv.h index 89906864b1..f241d3ca02 100644 --- a/config/examples/Einstart-S/Configuration_adv.h +++ b/config/examples/Einstart-S/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/FYSETC/AIO_II/Configuration_adv.h b/config/examples/FYSETC/AIO_II/Configuration_adv.h index e92bd2f0eb..fae2e76c71 100644 --- a/config/examples/FYSETC/AIO_II/Configuration_adv.h +++ b/config/examples/FYSETC/AIO_II/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/FYSETC/Cheetah 1.2/BLTouch/Configuration_adv.h b/config/examples/FYSETC/Cheetah 1.2/BLTouch/Configuration_adv.h index bdbd749874..b4e3f7dd1d 100644 --- a/config/examples/FYSETC/Cheetah 1.2/BLTouch/Configuration_adv.h +++ b/config/examples/FYSETC/Cheetah 1.2/BLTouch/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/FYSETC/Cheetah 1.2/base/Configuration_adv.h b/config/examples/FYSETC/Cheetah 1.2/base/Configuration_adv.h index bdbd749874..b4e3f7dd1d 100644 --- a/config/examples/FYSETC/Cheetah 1.2/base/Configuration_adv.h +++ b/config/examples/FYSETC/Cheetah 1.2/base/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/FYSETC/Cheetah/BLTouch/Configuration_adv.h b/config/examples/FYSETC/Cheetah/BLTouch/Configuration_adv.h index bdbd749874..b4e3f7dd1d 100644 --- a/config/examples/FYSETC/Cheetah/BLTouch/Configuration_adv.h +++ b/config/examples/FYSETC/Cheetah/BLTouch/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/FYSETC/Cheetah/base/Configuration_adv.h b/config/examples/FYSETC/Cheetah/base/Configuration_adv.h index bdbd749874..b4e3f7dd1d 100644 --- a/config/examples/FYSETC/Cheetah/base/Configuration_adv.h +++ b/config/examples/FYSETC/Cheetah/base/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/FYSETC/F6_13/Configuration_adv.h b/config/examples/FYSETC/F6_13/Configuration_adv.h index 8d7886a214..a627f47fa2 100644 --- a/config/examples/FYSETC/F6_13/Configuration_adv.h +++ b/config/examples/FYSETC/F6_13/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Felix/DUAL/Configuration_adv.h b/config/examples/Felix/DUAL/Configuration_adv.h index 21f8cbe9df..c34ef9d136 100644 --- a/config/examples/Felix/DUAL/Configuration_adv.h +++ b/config/examples/Felix/DUAL/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Felix/Single/Configuration_adv.h b/config/examples/Felix/Single/Configuration_adv.h index 21f8cbe9df..c34ef9d136 100644 --- a/config/examples/Felix/Single/Configuration_adv.h +++ b/config/examples/Felix/Single/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/FlashForge/CreatorPro/Configuration_adv.h b/config/examples/FlashForge/CreatorPro/Configuration_adv.h index a1ea4c417a..2b5601c884 100644 --- a/config/examples/FlashForge/CreatorPro/Configuration_adv.h +++ b/config/examples/FlashForge/CreatorPro/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/FolgerTech/i3-2020/Configuration_adv.h b/config/examples/FolgerTech/i3-2020/Configuration_adv.h index c6a67322db..32e7fa5921 100644 --- a/config/examples/FolgerTech/i3-2020/Configuration_adv.h +++ b/config/examples/FolgerTech/i3-2020/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Formbot/Raptor/Configuration_adv.h b/config/examples/Formbot/Raptor/Configuration_adv.h index 9065168b8f..067a228b36 100644 --- a/config/examples/Formbot/Raptor/Configuration_adv.h +++ b/config/examples/Formbot/Raptor/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Formbot/T_Rex_2+/Configuration_adv.h b/config/examples/Formbot/T_Rex_2+/Configuration_adv.h index f5b528a251..a26f791957 100644 --- a/config/examples/Formbot/T_Rex_2+/Configuration_adv.h +++ b/config/examples/Formbot/T_Rex_2+/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Formbot/T_Rex_3/Configuration_adv.h b/config/examples/Formbot/T_Rex_3/Configuration_adv.h index 5174344a9f..9b94acd2c7 100644 --- a/config/examples/Formbot/T_Rex_3/Configuration_adv.h +++ b/config/examples/Formbot/T_Rex_3/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Geeetech/A10/Configuration_adv.h b/config/examples/Geeetech/A10/Configuration_adv.h index 2b41e34fb8..27ba013902 100644 --- a/config/examples/Geeetech/A10/Configuration_adv.h +++ b/config/examples/Geeetech/A10/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Geeetech/A10M/Configuration_adv.h b/config/examples/Geeetech/A10M/Configuration_adv.h index 5478b805c9..0acc6c12ca 100644 --- a/config/examples/Geeetech/A10M/Configuration_adv.h +++ b/config/examples/Geeetech/A10M/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Geeetech/A20M/Configuration_adv.h b/config/examples/Geeetech/A20M/Configuration_adv.h index 16f4f53028..80c55b93ea 100644 --- a/config/examples/Geeetech/A20M/Configuration_adv.h +++ b/config/examples/Geeetech/A20M/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Geeetech/MeCreator2/Configuration_adv.h b/config/examples/Geeetech/MeCreator2/Configuration_adv.h index eeeed82509..010e169129 100644 --- a/config/examples/Geeetech/MeCreator2/Configuration_adv.h +++ b/config/examples/Geeetech/MeCreator2/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Geeetech/Prusa i3 Pro C/Configuration_adv.h b/config/examples/Geeetech/Prusa i3 Pro C/Configuration_adv.h index 2b41e34fb8..27ba013902 100644 --- a/config/examples/Geeetech/Prusa i3 Pro C/Configuration_adv.h +++ b/config/examples/Geeetech/Prusa i3 Pro C/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Geeetech/Prusa i3 Pro W/Configuration_adv.h b/config/examples/Geeetech/Prusa i3 Pro W/Configuration_adv.h index 2b41e34fb8..27ba013902 100644 --- a/config/examples/Geeetech/Prusa i3 Pro W/Configuration_adv.h +++ b/config/examples/Geeetech/Prusa i3 Pro W/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/HMS434/Configuration_adv.h b/config/examples/HMS434/Configuration_adv.h index 3a72558ce5..e711a451ca 100644 --- a/config/examples/HMS434/Configuration_adv.h +++ b/config/examples/HMS434/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Infitary/i3-M508/Configuration_adv.h b/config/examples/Infitary/i3-M508/Configuration_adv.h index bfd45f3b2f..7d53047a36 100644 --- a/config/examples/Infitary/i3-M508/Configuration_adv.h +++ b/config/examples/Infitary/i3-M508/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/JGAurora/A1/Configuration_adv.h b/config/examples/JGAurora/A1/Configuration_adv.h index 00db96375f..9121532034 100644 --- a/config/examples/JGAurora/A1/Configuration_adv.h +++ b/config/examples/JGAurora/A1/Configuration_adv.h @@ -202,6 +202,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/JGAurora/A5/Configuration_adv.h b/config/examples/JGAurora/A5/Configuration_adv.h index 284c8db2dd..2238177555 100644 --- a/config/examples/JGAurora/A5/Configuration_adv.h +++ b/config/examples/JGAurora/A5/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/JGAurora/A5S/Configuration_adv.h b/config/examples/JGAurora/A5S/Configuration_adv.h index 00db96375f..9121532034 100644 --- a/config/examples/JGAurora/A5S/Configuration_adv.h +++ b/config/examples/JGAurora/A5S/Configuration_adv.h @@ -202,6 +202,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/MakerParts/Configuration_adv.h b/config/examples/MakerParts/Configuration_adv.h index c44f8fddc5..1ffe2ebd84 100644 --- a/config/examples/MakerParts/Configuration_adv.h +++ b/config/examples/MakerParts/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Malyan/M150/Configuration_adv.h b/config/examples/Malyan/M150/Configuration_adv.h index 3074758151..3f8ddd31d6 100644 --- a/config/examples/Malyan/M150/Configuration_adv.h +++ b/config/examples/Malyan/M150/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Malyan/M200/Configuration_adv.h b/config/examples/Malyan/M200/Configuration_adv.h index 7e19efa0d2..cc105c2da2 100644 --- a/config/examples/Malyan/M200/Configuration_adv.h +++ b/config/examples/Malyan/M200/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Micromake/C1/enhanced/Configuration_adv.h b/config/examples/Micromake/C1/enhanced/Configuration_adv.h index 621add820c..850f484e36 100644 --- a/config/examples/Micromake/C1/enhanced/Configuration_adv.h +++ b/config/examples/Micromake/C1/enhanced/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Mks/Robin/Configuration_adv.h b/config/examples/Mks/Robin/Configuration_adv.h index 2805e033ff..a53aef7c85 100644 --- a/config/examples/Mks/Robin/Configuration_adv.h +++ b/config/examples/Mks/Robin/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Mks/Sbase/Configuration_adv.h b/config/examples/Mks/Sbase/Configuration_adv.h index 3cc85cb380..95fd438f52 100644 --- a/config/examples/Mks/Sbase/Configuration_adv.h +++ b/config/examples/Mks/Sbase/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/RapideLite/RL200/Configuration_adv.h b/config/examples/RapideLite/RL200/Configuration_adv.h index 71cef06f76..e4a5da79c1 100644 --- a/config/examples/RapideLite/RL200/Configuration_adv.h +++ b/config/examples/RapideLite/RL200/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/RigidBot/Configuration_adv.h b/config/examples/RigidBot/Configuration_adv.h index 9245cc3407..3975154abf 100644 --- a/config/examples/RigidBot/Configuration_adv.h +++ b/config/examples/RigidBot/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/SCARA/Configuration_adv.h b/config/examples/SCARA/Configuration_adv.h index fc5e37c327..15f2467c47 100644 --- a/config/examples/SCARA/Configuration_adv.h +++ b/config/examples/SCARA/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/STM32/Black_STM32F407VET6/Configuration_adv.h b/config/examples/STM32/Black_STM32F407VET6/Configuration_adv.h index 0811d2a388..0c639dd7f9 100644 --- a/config/examples/STM32/Black_STM32F407VET6/Configuration_adv.h +++ b/config/examples/STM32/Black_STM32F407VET6/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Sanguinololu/Configuration_adv.h b/config/examples/Sanguinololu/Configuration_adv.h index 9e69872cd1..ca5e4ef67f 100644 --- a/config/examples/Sanguinololu/Configuration_adv.h +++ b/config/examples/Sanguinololu/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Tevo/Michelangelo/Configuration_adv.h b/config/examples/Tevo/Michelangelo/Configuration_adv.h index dd4de407ff..7e4d756af4 100644 --- a/config/examples/Tevo/Michelangelo/Configuration_adv.h +++ b/config/examples/Tevo/Michelangelo/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Tevo/Tarantula Pro/Configuration_adv.h b/config/examples/Tevo/Tarantula Pro/Configuration_adv.h index 911e538890..544fdaa9a9 100755 --- a/config/examples/Tevo/Tarantula Pro/Configuration_adv.h +++ b/config/examples/Tevo/Tarantula Pro/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Tevo/Tornado/V1 (MKS Base)/Configuration_adv.h b/config/examples/Tevo/Tornado/V1 (MKS Base)/Configuration_adv.h index 0c339ce850..5404212285 100755 --- a/config/examples/Tevo/Tornado/V1 (MKS Base)/Configuration_adv.h +++ b/config/examples/Tevo/Tornado/V1 (MKS Base)/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Tevo/Tornado/V2 (MKS GEN-L)/Configuration_adv.h b/config/examples/Tevo/Tornado/V2 (MKS GEN-L)/Configuration_adv.h index 0c339ce850..5404212285 100755 --- a/config/examples/Tevo/Tornado/V2 (MKS GEN-L)/Configuration_adv.h +++ b/config/examples/Tevo/Tornado/V2 (MKS GEN-L)/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/TheBorg/Configuration_adv.h b/config/examples/TheBorg/Configuration_adv.h index b42216dd49..9bf9b90243 100644 --- a/config/examples/TheBorg/Configuration_adv.h +++ b/config/examples/TheBorg/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/TinyBoy2/Configuration_adv.h b/config/examples/TinyBoy2/Configuration_adv.h index fd39eb1eb4..e31f45fc40 100644 --- a/config/examples/TinyBoy2/Configuration_adv.h +++ b/config/examples/TinyBoy2/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Tronxy/X3A/Configuration_adv.h b/config/examples/Tronxy/X3A/Configuration_adv.h index 8f087306b7..06c9241c3d 100644 --- a/config/examples/Tronxy/X3A/Configuration_adv.h +++ b/config/examples/Tronxy/X3A/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Tronxy/X5S-2E/Configuration_adv.h b/config/examples/Tronxy/X5S-2E/Configuration_adv.h index 1425326365..5b0f04f4da 100644 --- a/config/examples/Tronxy/X5S-2E/Configuration_adv.h +++ b/config/examples/Tronxy/X5S-2E/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/UltiMachine/Archim1/Configuration_adv.h b/config/examples/UltiMachine/Archim1/Configuration_adv.h index 0e36d0095f..b7530e6a83 100644 --- a/config/examples/UltiMachine/Archim1/Configuration_adv.h +++ b/config/examples/UltiMachine/Archim1/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/UltiMachine/Archim2/Configuration_adv.h b/config/examples/UltiMachine/Archim2/Configuration_adv.h index 98cc1bf34f..cef11435db 100644 --- a/config/examples/UltiMachine/Archim2/Configuration_adv.h +++ b/config/examples/UltiMachine/Archim2/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/VORONDesign/Configuration_adv.h b/config/examples/VORONDesign/Configuration_adv.h index acd0f9e6b8..a5789a1835 100644 --- a/config/examples/VORONDesign/Configuration_adv.h +++ b/config/examples/VORONDesign/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Velleman/K8200/Configuration_adv.h b/config/examples/Velleman/K8200/Configuration_adv.h index f1ac49333e..9b3b9a0a48 100644 --- a/config/examples/Velleman/K8200/Configuration_adv.h +++ b/config/examples/Velleman/K8200/Configuration_adv.h @@ -210,6 +210,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Velleman/K8400/Dual-head/Configuration_adv.h b/config/examples/Velleman/K8400/Dual-head/Configuration_adv.h index 127051671c..07af8fcd61 100644 --- a/config/examples/Velleman/K8400/Dual-head/Configuration_adv.h +++ b/config/examples/Velleman/K8400/Dual-head/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Velleman/K8400/Single-head/Configuration_adv.h b/config/examples/Velleman/K8400/Single-head/Configuration_adv.h index 127051671c..07af8fcd61 100644 --- a/config/examples/Velleman/K8400/Single-head/Configuration_adv.h +++ b/config/examples/Velleman/K8400/Single-head/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/WASP/PowerWASP/Configuration_adv.h b/config/examples/WASP/PowerWASP/Configuration_adv.h index 135e0d526b..809abb271d 100644 --- a/config/examples/WASP/PowerWASP/Configuration_adv.h +++ b/config/examples/WASP/PowerWASP/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Wanhao/Duplicator 6/Configuration_adv.h b/config/examples/Wanhao/Duplicator 6/Configuration_adv.h index dc680dd05b..21733192ba 100644 --- a/config/examples/Wanhao/Duplicator 6/Configuration_adv.h +++ b/config/examples/Wanhao/Duplicator 6/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Wanhao/Duplicator i3 2.1/Configuration_adv.h b/config/examples/Wanhao/Duplicator i3 2.1/Configuration_adv.h index 7853a9774d..d59240d47b 100644 --- a/config/examples/Wanhao/Duplicator i3 2.1/Configuration_adv.h +++ b/config/examples/Wanhao/Duplicator i3 2.1/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/Wanhao/Duplicator i3 Mini/Configuration_adv.h b/config/examples/Wanhao/Duplicator i3 Mini/Configuration_adv.h index 4db45c4523..7fa89df75a 100644 --- a/config/examples/Wanhao/Duplicator i3 Mini/Configuration_adv.h +++ b/config/examples/Wanhao/Duplicator i3 Mini/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/delta/Anycubic/Kossel/Configuration_adv.h b/config/examples/delta/Anycubic/Kossel/Configuration_adv.h index be7b87d235..0ff2007af8 100644 --- a/config/examples/delta/Anycubic/Kossel/Configuration_adv.h +++ b/config/examples/delta/Anycubic/Kossel/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/delta/Dreammaker/Overlord/Configuration_adv.h b/config/examples/delta/Dreammaker/Overlord/Configuration_adv.h index 85914d0a4e..4e37d61269 100644 --- a/config/examples/delta/Dreammaker/Overlord/Configuration_adv.h +++ b/config/examples/delta/Dreammaker/Overlord/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/delta/Dreammaker/Overlord_Pro/Configuration_adv.h b/config/examples/delta/Dreammaker/Overlord_Pro/Configuration_adv.h index 721a68ccf6..ae0c194612 100644 --- a/config/examples/delta/Dreammaker/Overlord_Pro/Configuration_adv.h +++ b/config/examples/delta/Dreammaker/Overlord_Pro/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/delta/FLSUN/auto_calibrate/Configuration_adv.h b/config/examples/delta/FLSUN/auto_calibrate/Configuration_adv.h index f1338cc009..8700b7a8ca 100644 --- a/config/examples/delta/FLSUN/auto_calibrate/Configuration_adv.h +++ b/config/examples/delta/FLSUN/auto_calibrate/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/delta/FLSUN/kossel/Configuration_adv.h b/config/examples/delta/FLSUN/kossel/Configuration_adv.h index f1338cc009..8700b7a8ca 100644 --- a/config/examples/delta/FLSUN/kossel/Configuration_adv.h +++ b/config/examples/delta/FLSUN/kossel/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/delta/FLSUN/kossel_mini/Configuration_adv.h b/config/examples/delta/FLSUN/kossel_mini/Configuration_adv.h index 0f674ec7ca..3f5fc35abb 100644 --- a/config/examples/delta/FLSUN/kossel_mini/Configuration_adv.h +++ b/config/examples/delta/FLSUN/kossel_mini/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/delta/Geeetech/Rostock 301/Configuration_adv.h b/config/examples/delta/Geeetech/Rostock 301/Configuration_adv.h index 97b3be228c..888e948d7c 100644 --- a/config/examples/delta/Geeetech/Rostock 301/Configuration_adv.h +++ b/config/examples/delta/Geeetech/Rostock 301/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/delta/MKS/SBASE/Configuration_adv.h b/config/examples/delta/MKS/SBASE/Configuration_adv.h index d2f5aac6b0..d0eed756e0 100644 --- a/config/examples/delta/MKS/SBASE/Configuration_adv.h +++ b/config/examples/delta/MKS/SBASE/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/delta/Tevo Little Monster/Configuration_adv.h b/config/examples/delta/Tevo Little Monster/Configuration_adv.h index cb2edb40ae..14d291573a 100644 --- a/config/examples/delta/Tevo Little Monster/Configuration_adv.h +++ b/config/examples/delta/Tevo Little Monster/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/delta/generic/Configuration_adv.h b/config/examples/delta/generic/Configuration_adv.h index 0f674ec7ca..3f5fc35abb 100644 --- a/config/examples/delta/generic/Configuration_adv.h +++ b/config/examples/delta/generic/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/delta/kossel_mini/Configuration_adv.h b/config/examples/delta/kossel_mini/Configuration_adv.h index 0f674ec7ca..3f5fc35abb 100644 --- a/config/examples/delta/kossel_mini/Configuration_adv.h +++ b/config/examples/delta/kossel_mini/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/delta/kossel_xl/Configuration_adv.h b/config/examples/delta/kossel_xl/Configuration_adv.h index 2a7f56cba6..94d1be3f05 100644 --- a/config/examples/delta/kossel_xl/Configuration_adv.h +++ b/config/examples/delta/kossel_xl/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/gCreate/gMax1.5+/Configuration_adv.h b/config/examples/gCreate/gMax1.5+/Configuration_adv.h index e98a2d0025..a7f48ffe62 100644 --- a/config/examples/gCreate/gMax1.5+/Configuration_adv.h +++ b/config/examples/gCreate/gMax1.5+/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/makibox/Configuration_adv.h b/config/examples/makibox/Configuration_adv.h index aa9fa48c20..89cf726681 100644 --- a/config/examples/makibox/Configuration_adv.h +++ b/config/examples/makibox/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/tvrrug/Round2/Configuration_adv.h b/config/examples/tvrrug/Round2/Configuration_adv.h index 0e37e22f36..bb04805688 100644 --- a/config/examples/tvrrug/Round2/Configuration_adv.h +++ b/config/examples/tvrrug/Round2/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /** diff --git a/config/examples/wt150/Configuration_adv.h b/config/examples/wt150/Configuration_adv.h index c2be725992..996debc844 100644 --- a/config/examples/wt150/Configuration_adv.h +++ b/config/examples/wt150/Configuration_adv.h @@ -197,6 +197,56 @@ #define DEFAULT_Kc (100) //heating power=Kc*(e_speed) #define LPQ_MAX_LEN 50 #endif + + /** + * Add an experimental additional term to the heater power, proportional to the fan speed. + * A well-chosen Kf value should add just enough power to compensate for power-loss from the cooling fan. + * You can either just add a constant compensation with the DEFAULT_Kf value + * or follow the instruction below to get speed-dependent compensation. + * + * Constant compensation (use only with fanspeeds of 0% and 100%) + * --------------------------------------------------------------------- + * A good starting point for the Kf-value comes from the calculation: + * kf = (power_fan * eff_fan) / power_heater * 255 + * where eff_fan is between 0.0 and 1.0, based on fan-efficiency and airflow to the nozzle / heater. + * + * Example: + * Heater: 40W, Fan: 0.1A * 24V = 2.4W, eff_fan = 0.8 + * Kf = (2.4W * 0.8) / 40W * 255 = 12.24 + * + * Fan-speed dependent compensation + * -------------------------------- + * 1. To find a good Kf value, set the hotend temperature, wait for it to settle, and enable the fan (100%). + * Make sure PID_FAN_SCALING_LIN_FACTOR is 0 and PID_FAN_SCALING_ALTERNATIVE_DEFINITION is not enabled. + * If you see the temperature drop repeat the test, increasing the Kf value slowly, until the temperature + * drop goes away. If the temperature overshoots after enabling the fan, the Kf value is too big. + * 2. Note the Kf-value for fan-speed at 100% + * 3. Determine a good value for PID_FAN_SCALING_MIN_SPEED, which is around the speed, where the fan starts moving. + * 4. Repeat step 1. and 2. for this fan speed. + * 5. Enable PID_FAN_SCALING_ALTERNATIVE_DEFINITION and enter the two identified Kf-values in + * PID_FAN_SCALING_AT_FULL_SPEED and PID_FAN_SCALING_AT_MIN_SPEED. Enter the minimum speed in PID_FAN_SCALING_MIN_SPEED + */ + //#define PID_FAN_SCALING + #if ENABLED(PID_FAN_SCALING) + //#define PID_FAN_SCALING_ALTERNATIVE_DEFINITION + #if ENABLED(PID_FAN_SCALING_ALTERNATIVE_DEFINITION) + // The alternative definition is used for an easier configuration. + // Just figure out Kf at fullspeed (255) and PID_FAN_SCALING_MIN_SPEED. + // DEFAULT_Kf and PID_FAN_SCALING_LIN_FACTOR are calculated accordingly. + + #define PID_FAN_SCALING_AT_FULL_SPEED 13.0 //=PID_FAN_SCALING_LIN_FACTOR*255+DEFAULT_Kf + #define PID_FAN_SCALING_AT_MIN_SPEED 6.0 //=PID_FAN_SCALING_LIN_FACTOR*PID_FAN_SCALING_MIN_SPEED+DEFAULT_Kf + #define PID_FAN_SCALING_MIN_SPEED 10.0 // Minimum fan speed at which to enable PID_FAN_SCALING + + #define DEFAULT_Kf (255.0*PID_FAN_SCALING_AT_MIN_SPEED-PID_FAN_SCALING_AT_FULL_SPEED*PID_FAN_SCALING_MIN_SPEED)/(255.0-PID_FAN_SCALING_MIN_SPEED) + #define PID_FAN_SCALING_LIN_FACTOR (PID_FAN_SCALING_AT_FULL_SPEED-DEFAULT_Kf)/255.0 + + #else + #define PID_FAN_SCALING_LIN_FACTOR (0) // Power loss due to cooling = Kf * (fan_speed) + #define DEFAULT_Kf 10 // A constant value added to the PID-tuner + #define PID_FAN_SCALING_MIN_SPEED 10 // Minimum fan speed at which to enable PID_FAN_SCALING + #endif + #endif #endif /**