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✨ Model Predictive Temperature Control

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MarlinFirmware/Marlin#23751
This commit is contained in:
Scott Lahteine 2022-03-31 23:54:03 -05:00
parent 3f6ab9eb03
commit ca1416ea41
307 changed files with 13203 additions and 1228 deletions
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47
config/examples/Geeetech/M201/Configuration.h
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@ -604,10 +604,11 @@
//===========================================================================
//============================= PID Settings ================================
//===========================================================================
// PID Tuning Guide here: https://reprap.org/wiki/PID_Tuning
// Enable PIDTEMP for PID control or MPCTEMP for Predictive Model.
// temperature control. Disable both for bang-bang heating.
#define PIDTEMP // See the PID Tuning Guide at https://reprap.org/wiki/PID_Tuning
//#define MPCTEMP // ** EXPERIMENTAL **
// Comment the following line to disable PID and enable bang-bang.
#define PIDTEMP
#define BANG_MAX 255 // Limits current to nozzle while in bang-bang mode; 255=full current
#define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
#define PID_K1 0.95 // Smoothing factor within any PID loop
@ -629,7 +630,45 @@
#define DEFAULT_Ki 1.08
#define DEFAULT_Kd 114.00
#endif
#endif // PIDTEMP
#endif
/**
* Model Predictive Control for hotend
*
* Use a physical model of the hotend to control temperature. When configured correctly
* this gives better responsiveness and stability than PID and it also removes the need
* for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
*/
#if ENABLED(MPCTEMP)
#define MPC_MAX BANG_MAX // (0..255) Current to nozzle while MPC is active.
#define MPC_HEATER_POWER { 40.0f } // (W) Heat cartridge powers.
#define MPC_INCLUDE_FAN // Model the fan speed?
// Measured physical constants from M306
#define MPC_BLOCK_HEAT_CAPACITY { 16.7f } // (J/K) Heat block heat capacities.
#define MPC_SENSOR_RESPONSIVENESS { 0.22f } // (K/s per ∆K) Rate of change of sensor temperature from heat block.
#define MPC_AMBIENT_XFER_COEFF { 0.068f } // (W/K) Heat transfer coefficients from heat block to room air with fan off.
#if ENABLED(MPC_INCLUDE_FAN)
#define MPC_AMBIENT_XFER_COEFF_FAN255 { 0.097f } // (W/K) Heat transfer coefficients from heat block to room air with fan on full.
#endif
// For one fan and multiple hotends MPC needs to know how to apply the fan cooling effect.
#if ENABLED(MPC_INCLUDE_FAN)
//#define MPC_FAN_0_ALL_HOTENDS
//#define MPC_FAN_0_ACTIVE_HOTEND
#endif
#define FILAMENT_HEAT_CAPACITY_PERMM 5.6e-3f // 0.0056 J/K/mm for 1.75mm PLA (0.0149 J/K/mm for 2.85mm PLA).
//#define FILAMENT_HEAT_CAPACITY_PERMM 3.6e-3f // 0.0036 J/K/mm for 1.75mm PETG (0.0094 J/K/mm for 2.85mm PETG).
// Advanced options
#define MPC_SMOOTHING_FACTOR 0.5f // (0.0...1.0) Noisy temperature sensors may need a lower value for stabilization.
#define MPC_MIN_AMBIENT_CHANGE 1.0f // (K/s) Modeled ambient temperature rate of change, when correcting model inaccuracies.
#define MPC_STEADYSTATE 0.5f // (K/s) Temperature change rate for steady state logic to be enforced.
#define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
#endif
//===========================================================================
//====================== PID > Bed Temperature Control ======================