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Working, but has temp offset issue slightly.

Could have slightly wrong gain values
This commit is contained in:
Ben V. Brown
2019-10-07 21:11:31 +11:00
parent 3e1abc451c
commit 6a39e4bcc8
9 changed files with 67 additions and 83 deletions
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25
workspace/TS100/Core/Src/main.cpp
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@@ -47,7 +47,7 @@ int main(void) {
HAL_Init();
Setup_HAL(); // Setup all the HAL objects
HAL_IWDG_Refresh(&hiwdg);
setTipMilliWatts(0); // force tip off
setTipX10Watts(0); // force tip off
FRToSI2C::init(&hi2c1);
OLED::initialize(); // start up the LCD
OLED::setFont(0); // default to bigger font
@@ -106,7 +106,7 @@ void startPIDTask(void const *argument __unused) {
* We take the current tip temperature & evaluate the next step for the tip
* control PWM.
*/
setTipMilliWatts(0); // disable the output driver if the output is set to be off
setTipX10Watts(0); // disable the output driver if the output is set to be off
#ifdef MODEL_TS80
idealQCVoltage = calculateMaxVoltage(systemSettings.cutoutSetting);
#endif
@@ -118,7 +118,7 @@ void startPIDTask(void const *argument __unused) {
#else
#endif
history<int32_t, 16> tempError = { { 0 }, 0, 0 };
history<int32_t, PID_TIM_HZ > tempError = { { 0 }, 0, 0 };
currentTempTargetDegC = 0; // Force start with no output (off). If in sleep / soldering this will
// be over-ridden rapidly
pidTaskNotification = xTaskGetCurrentTaskHandle();
@@ -145,7 +145,7 @@ void startPIDTask(void const *argument __unused) {
tempError.update(tError);
// Now for the PID!
int32_t milliWattsOut = 0;
int32_t x10WattsOut = 0;
// P term - total power needed to hit target temp next cycle.
// thermal mass = 1690 milliJ/*C for my tip.
@@ -154,17 +154,17 @@ void startPIDTask(void const *argument __unused) {
// This is necessary because of the temp noise and thermal lag in the system.
// Once we have feed-forward temp estimation we should be able to better tune this.
int32_t milliWattsNeeded = tempToMilliWatts(
tempError.average());
int32_t x10WattsNeeded = tempToX10Watts(tError);
// tempError.average());
// note that milliWattsNeeded is sometimes negative, this counters overshoot
// from I term's inertia.
milliWattsOut += milliWattsNeeded;
x10WattsOut += x10WattsNeeded;
// I term - energy needed to compensate for heat loss.
// We track energy put into the system over some window.
// Assuming the temp is stable, energy in = energy transfered.
// (If it isn't, P will dominate).
milliWattsOut += milliWattHistory.average();
x10WattsOut += x10WattHistory.average();
// D term - use sudden temp change to counter fast cooling/heating.
// In practice, this provides an early boost if temp is dropping
@@ -172,7 +172,7 @@ void startPIDTask(void const *argument __unused) {
// basically: temp - lastTemp
// Unfortunately, our temp signal is too noisy to really help.
setTipMilliWatts(milliWattsOut);
setTipX10Watts(x10WattsOut);
} else {
#ifdef MODEL_TS80
@@ -180,15 +180,15 @@ void startPIDTask(void const *argument __unused) {
// This is purely guesswork :'( as everyone implements stuff differently
if (xTaskGetTickCount() - lastPowerPulse < 10) {
// for the first 100mS turn on for a bit
setTipMilliWatts(2500); // typically its around 5W to hold the current temp, so this wont raise temp much
setTipX10Watts(25); // typically its around 5W to hold the current temp, so this wont raise temp much
} else
setTipMilliWatts(0);
setTipX10Watts(0);
//Then wait until the next 0.5 seconds
if (xTaskGetTickCount() - lastPowerPulse > 50) {
lastPowerPulse = xTaskGetTickCount();
}
#else
setTipMilliWatts(0);
setTipX10Watts(0);
#endif
}
@@ -197,7 +197,6 @@ void startPIDTask(void const *argument __unused) {
asm("bkpt");
//ADC interrupt timeout
setTipMilliWatts(0);
setTipPWM(0);
}
}