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an undisclosed source says these parameters are better #296

This commit is contained in:
Matthew Kennedy 2023-11-22 19:27:29 -08:00
parent b23904362f
commit f2aef8fa06
1 changed files with 11 additions and 11 deletions
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22
firmware/heater_control.cpp
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@ -65,7 +65,7 @@ HeaterState HeaterControllerBase::GetNextState(HeaterState currentState, HeaterA
} }
float overheatTemp = m_targetTempC + 100; float overheatTemp = m_targetTempC + 100;
float closedLoopTemp = m_targetTempC - 50; float closedLoopTemp = m_targetTempC - 30;
float underheatTemp = m_targetTempC - 100; float underheatTemp = m_targetTempC - 100;
switch (currentState) switch (currentState)
@ -74,7 +74,7 @@ HeaterState HeaterControllerBase::GetNextState(HeaterState currentState, HeaterA
#ifdef HEATER_FAST_HEATING_THRESHOLD_T #ifdef HEATER_FAST_HEATING_THRESHOLD_T
if (sensorTemp >= HEATER_FAST_HEATING_THRESHOLD_T) { if (sensorTemp >= HEATER_FAST_HEATING_THRESHOLD_T) {
// if sensor is already hot - we can start from higher heater voltage // if sensor is already hot - we can start from higher heater voltage
rampVoltage = 7.5; rampVoltage = 9;
// Reset the timer for the warmup phase // Reset the timer for the warmup phase
m_warmupTimer.reset(); m_warmupTimer.reset();
@ -87,8 +87,8 @@ HeaterState HeaterControllerBase::GetNextState(HeaterState currentState, HeaterA
if (m_preheatTimer.hasElapsedSec(m_preheatTimeSec) || sensorTemp > closedLoopTemp) if (m_preheatTimer.hasElapsedSec(m_preheatTimeSec) || sensorTemp > closedLoopTemp)
{ {
// If enough time has elapsed, start the ramp // If enough time has elapsed, start the ramp
// Start the ramp at 4 volts // Start the ramp at 7 volts
rampVoltage = 4; rampVoltage = 7;
// Reset the timer for the warmup phase // Reset the timer for the warmup phase
m_warmupTimer.reset(); m_warmupTimer.reset();
@ -139,12 +139,12 @@ float HeaterControllerBase::GetVoltageForState(HeaterState state, float sensorEs
{ {
case HeaterState::Preheat: case HeaterState::Preheat:
// Max allowed during condensation phase (preheat) is 2v // Max allowed during condensation phase (preheat) is 2v
return 1.5f; return 2.0f;
case HeaterState::WarmupRamp: case HeaterState::WarmupRamp:
if (rampVoltage < 10) if (rampVoltage < 12)
{ {
// 0.3 volt per second, divided by battery voltage and update rate // 0.4 volt per second, divided by battery voltage and update rate
constexpr float rampRateVoltPerSecond = 0.3f; constexpr float rampRateVoltPerSecond = 0.4f;
constexpr float heaterFrequency = 1000.0f / HEATER_CONTROL_PERIOD; constexpr float heaterFrequency = 1000.0f / HEATER_CONTROL_PERIOD;
rampVoltage += (rampRateVoltPerSecond / heaterFrequency); rampVoltage += (rampRateVoltPerSecond / heaterFrequency);
} }
@ -184,9 +184,9 @@ void HeaterControllerBase::Update(const ISampler& sampler, HeaterAllow heaterAll
heaterState = GetNextState(heaterState, heaterAllowState, batteryVoltage, sensorTemperature); heaterState = GetNextState(heaterState, heaterAllowState, batteryVoltage, sensorTemperature);
float heaterVoltage = GetVoltageForState(heaterState, sensorEsr); float heaterVoltage = GetVoltageForState(heaterState, sensorEsr);
// Limit to 11 volts // Limit to 12 volts
if (heaterVoltage > 11) { if (heaterVoltage > 12) {
heaterVoltage = 11; heaterVoltage = 12;
} }
// duty = (V_eff / V_batt) ^ 2 // duty = (V_eff / V_batt) ^ 2