mirror of https://github.com/rusefi/rusefi-1.git
126 lines
2.9 KiB
C++
126 lines
2.9 KiB
C++
#include "closed_loop_fuel.h"
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#include "closed_loop_fuel_cell.h"
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#include "engine.h"
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#include "sensor.h"
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#include "engine_math.h"
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#include "deadband.h"
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EXTERN_ENGINE;
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struct FuelingBank {
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ClosedLoopFuelCellImpl cells[STFT_CELL_COUNT];
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};
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static FuelingBank banks[STFT_BANK_COUNT];
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static Deadband<25> idleDeadband;
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static Deadband<2> overrunDeadband;
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static Deadband<2> loadDeadband;
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static SensorType getSensorForBankIndex(size_t index) {
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switch (index) {
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case 0: return SensorType::Lambda1;
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case 1: return SensorType::Lambda2;
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default: return SensorType::Invalid;
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}
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}
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size_t computeStftBin(int rpm, float load, stft_s& cfg) {
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// Low RPM -> idle
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if (idleDeadband.lt(rpm, cfg.maxIdleRegionRpm * RPM_1_BYTE_PACKING_MULT))
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{
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return 0;
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}
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// Low load -> overrun
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if (overrunDeadband.lt(load, cfg.maxOverrunLoad))
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{
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return 1;
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}
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// High load -> power
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if (loadDeadband.gt(load, cfg.minPowerLoad))
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{
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return 2;
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}
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// Default -> normal "in the middle" cell
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return 3;
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}
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static bool shouldCorrect(DECLARE_ENGINE_PARAMETER_SIGNATURE) {
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const auto& cfg = CONFIG(stft);
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// User disable bit
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if (!CONFIG(fuelClosedLoopCorrectionEnabled)) {
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return false;
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}
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// Don't correct if not running
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if (!ENGINE(rpmCalculator).isRunning()) {
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return false;
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}
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// Startup delay - allow O2 sensor to warm up, etc
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if (cfg.startupDelay > ENGINE(engineState.running.timeSinceCrankingInSecs)) {
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return false;
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}
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// Check that the engine is hot enough (and clt not failed)
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auto clt = Sensor::get(SensorType::Clt);
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if (!clt.Valid || clt.Value < cfg.minClt) {
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return false;
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}
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// If all was well, then we're enabled!
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return true;
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}
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bool shouldUpdateCorrection(SensorType sensor DECLARE_ENGINE_PARAMETER_SUFFIX) {
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const auto& cfg = CONFIG(stft);
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// Pause (but don't reset) correction if the AFR is off scale.
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// It's probably a transient and poorly tuned transient correction
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auto afr = Sensor::get(sensor).value_or(0) * 14.7f;
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if (!afr || afr < (cfg.minAfr * 0.1f) || afr > (cfg.maxAfr * 0.1f)) {
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return false;
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}
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return true;
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}
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ClosedLoopFuelResult fuelClosedLoopCorrection(DECLARE_ENGINE_PARAMETER_SIGNATURE) {
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if (!shouldCorrect(PASS_ENGINE_PARAMETER_SIGNATURE)) {
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return {};
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}
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size_t binIdx = computeStftBin(GET_RPM(), getFuelingLoad(PASS_ENGINE_PARAMETER_SIGNATURE), CONFIG(stft));
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#if EFI_TUNER_STUDIO
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if (engineConfiguration->debugMode == DBG_FUEL_PID_CORRECTION) {
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tsOutputChannels.debugIntField1 = binIdx;
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}
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#endif // EFI_TUNER_STUDIO
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ClosedLoopFuelResult result;
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for (int i = 0; i < STFT_BANK_COUNT; i++) {
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auto& cell = banks[i].cells[binIdx];
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SensorType sensor = getSensorForBankIndex(i);
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// todo: push configuration at startup
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cell.configure(&CONFIG(stft.cellCfgs[binIdx]), sensor);
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if (shouldUpdateCorrection(sensor PASS_ENGINE_PARAMETER_SUFFIX)) {
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cell.update(CONFIG(stft.deadband) * 0.001f, CONFIG(stftIgnoreErrorMagnitude) PASS_ENGINE_PARAMETER_SUFFIX);
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}
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result.banks[i] = cell.getAdjustment();
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}
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return result;
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}
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