mit pathdingsbums
Dependencies: mbed
Fork of MicroMouse_MASTER_TWO by
Controller.cpp@0:a9fe4ef404bf, 2018-03-07 (annotated)
- Committer:
- ruesipat
- Date:
- Wed Mar 07 14:06:19 2018 +0000
- Revision:
- 0:a9fe4ef404bf
- Child:
- 1:d9e840c48b1e
hallo
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ruesipat | 0:a9fe4ef404bf | 1 | #include "Controller.h" |
ruesipat | 0:a9fe4ef404bf | 2 | |
ruesipat | 0:a9fe4ef404bf | 3 | using namespace std; |
ruesipat | 0:a9fe4ef404bf | 4 | |
ruesipat | 0:a9fe4ef404bf | 5 | const float Controller::PERIOD = 0.001f; // Periode von 1 ms |
ruesipat | 0:a9fe4ef404bf | 6 | const float Controller::COUNTS_PER_TURN = 1200.0f; // Encoder-Aufloesung |
ruesipat | 0:a9fe4ef404bf | 7 | const float Controller::LOWPASS_FILTER_FREQUENCY = 300.0f; // in [rad/s] |
ruesipat | 0:a9fe4ef404bf | 8 | const float Controller::KN = 40.0f; // Drehzahlkonstante in [rpm/V] |
ruesipat | 0:a9fe4ef404bf | 9 | const float Controller::KP = 0.02f; // Regler-Parameter |
ruesipat | 0:a9fe4ef404bf | 10 | const float Controller::MAX_VOLTAGE = 12.0f; // Batteriespannung in [V] |
ruesipat | 0:a9fe4ef404bf | 11 | const float Controller::MIN_DUTY_CYCLE = 0.02f; // minimale Duty-Cycle |
ruesipat | 0:a9fe4ef404bf | 12 | const float Controller::MAX_DUTY_CYCLE = 0.98f; // maximale Duty-Cycle |
ruesipat | 0:a9fe4ef404bf | 13 | |
ruesipat | 0:a9fe4ef404bf | 14 | Controller::Controller(PwmOut& pwmLeft, PwmOut& pwmRight, |
ruesipat | 0:a9fe4ef404bf | 15 | EncoderCounter& counterLeft, EncoderCounter& counterRight) : |
ruesipat | 0:a9fe4ef404bf | 16 | pwmLeft(pwmLeft), pwmRight(pwmRight), |
ruesipat | 0:a9fe4ef404bf | 17 | counterLeft(counterLeft), counterRight(counterRight) { |
ruesipat | 0:a9fe4ef404bf | 18 | |
ruesipat | 0:a9fe4ef404bf | 19 | // Initialisieren der PWM Ausgaenge |
ruesipat | 0:a9fe4ef404bf | 20 | |
ruesipat | 0:a9fe4ef404bf | 21 | pwmLeft.period(0.00005f); // PWM Periode von 50 us |
ruesipat | 0:a9fe4ef404bf | 22 | pwmLeft = 0.5f; // Duty-Cycle von 50% |
ruesipat | 0:a9fe4ef404bf | 23 | pwmRight.period(0.00005f); // PWM Periode von 50 us |
ruesipat | 0:a9fe4ef404bf | 24 | pwmRight = 0.5f; // Duty-Cycle von 50% |
ruesipat | 0:a9fe4ef404bf | 25 | |
ruesipat | 0:a9fe4ef404bf | 26 | // Initialisieren von lokalen Variabeln |
ruesipat | 0:a9fe4ef404bf | 27 | |
ruesipat | 0:a9fe4ef404bf | 28 | previousValueCounterLeft = counterLeft.read(); |
ruesipat | 0:a9fe4ef404bf | 29 | previousValueCounterRight = counterRight.read(); |
ruesipat | 0:a9fe4ef404bf | 30 | |
ruesipat | 0:a9fe4ef404bf | 31 | speedLeftFilter.setPeriod(PERIOD); |
ruesipat | 0:a9fe4ef404bf | 32 | speedLeftFilter.setFrequency(LOWPASS_FILTER_FREQUENCY); |
ruesipat | 0:a9fe4ef404bf | 33 | |
ruesipat | 0:a9fe4ef404bf | 34 | speedRightFilter.setPeriod(PERIOD); |
ruesipat | 0:a9fe4ef404bf | 35 | speedRightFilter.setFrequency(LOWPASS_FILTER_FREQUENCY); |
ruesipat | 0:a9fe4ef404bf | 36 | |
ruesipat | 0:a9fe4ef404bf | 37 | desiredSpeedLeft = 0.0f; |
ruesipat | 0:a9fe4ef404bf | 38 | desiredSpeedRight = 0.0f; |
ruesipat | 0:a9fe4ef404bf | 39 | |
ruesipat | 0:a9fe4ef404bf | 40 | actualSpeedLeft = 0.0f; |
ruesipat | 0:a9fe4ef404bf | 41 | actualSpeedRight = 0.0f; |
ruesipat | 0:a9fe4ef404bf | 42 | |
ruesipat | 0:a9fe4ef404bf | 43 | // Starten des periodischen Tasks |
ruesipat | 0:a9fe4ef404bf | 44 | ticker.attach(callback(this, &Controller::run), PERIOD); |
ruesipat | 0:a9fe4ef404bf | 45 | } |
ruesipat | 0:a9fe4ef404bf | 46 | |
ruesipat | 0:a9fe4ef404bf | 47 | Controller::~Controller() |
ruesipat | 0:a9fe4ef404bf | 48 | { |
ruesipat | 0:a9fe4ef404bf | 49 | ticker.detach(); // Stoppt den periodischen Task |
ruesipat | 0:a9fe4ef404bf | 50 | } |
ruesipat | 0:a9fe4ef404bf | 51 | |
ruesipat | 0:a9fe4ef404bf | 52 | |
ruesipat | 0:a9fe4ef404bf | 53 | void Controller::setDesiredSpeedLeft(float desiredSpeedLeft) |
ruesipat | 0:a9fe4ef404bf | 54 | { |
ruesipat | 0:a9fe4ef404bf | 55 | this->desiredSpeedLeft = desiredSpeedLeft; |
ruesipat | 0:a9fe4ef404bf | 56 | } |
ruesipat | 0:a9fe4ef404bf | 57 | |
ruesipat | 0:a9fe4ef404bf | 58 | void Controller::setDesiredSpeedRight(float desiredSpeedRight) |
ruesipat | 0:a9fe4ef404bf | 59 | { |
ruesipat | 0:a9fe4ef404bf | 60 | this->desiredSpeedRight = desiredSpeedRight; |
ruesipat | 0:a9fe4ef404bf | 61 | } |
ruesipat | 0:a9fe4ef404bf | 62 | |
ruesipat | 0:a9fe4ef404bf | 63 | void Controller::run() { |
ruesipat | 0:a9fe4ef404bf | 64 | |
ruesipat | 0:a9fe4ef404bf | 65 | // Berechnen die effektiven Drehzahlen der Motoren in [rpm] |
ruesipat | 0:a9fe4ef404bf | 66 | |
ruesipat | 0:a9fe4ef404bf | 67 | short valueCounterLeft = counterLeft.read(); |
ruesipat | 0:a9fe4ef404bf | 68 | short valueCounterRight = counterRight.read(); |
ruesipat | 0:a9fe4ef404bf | 69 | |
ruesipat | 0:a9fe4ef404bf | 70 | short countsInPastPeriodLeft = valueCounterLeft-previousValueCounterLeft; |
ruesipat | 0:a9fe4ef404bf | 71 | short countsInPastPeriodRight = valueCounterRight-previousValueCounterRight; |
ruesipat | 0:a9fe4ef404bf | 72 | |
ruesipat | 0:a9fe4ef404bf | 73 | previousValueCounterLeft = valueCounterLeft; |
ruesipat | 0:a9fe4ef404bf | 74 | previousValueCounterRight = valueCounterRight; |
ruesipat | 0:a9fe4ef404bf | 75 | |
ruesipat | 0:a9fe4ef404bf | 76 | actualSpeedLeft = speedLeftFilter.filter((float)countsInPastPeriodLeft |
ruesipat | 0:a9fe4ef404bf | 77 | /COUNTS_PER_TURN/PERIOD*60.0f); |
ruesipat | 0:a9fe4ef404bf | 78 | actualSpeedRight = speedRightFilter.filter((float)countsInPastPeriodRight |
ruesipat | 0:a9fe4ef404bf | 79 | /COUNTS_PER_TURN/PERIOD*60.0f); |
ruesipat | 0:a9fe4ef404bf | 80 | |
ruesipat | 0:a9fe4ef404bf | 81 | // Berechnen der Motorspannungen Uout |
ruesipat | 0:a9fe4ef404bf | 82 | |
ruesipat | 0:a9fe4ef404bf | 83 | float voltageLeft = KP*(desiredSpeedLeft-actualSpeedLeft)+desiredSpeedLeft/KN; |
ruesipat | 0:a9fe4ef404bf | 84 | float voltageRight = KP*(desiredSpeedRight-actualSpeedRight) |
ruesipat | 0:a9fe4ef404bf | 85 | +desiredSpeedRight/KN; |
ruesipat | 0:a9fe4ef404bf | 86 | |
ruesipat | 0:a9fe4ef404bf | 87 | // Berechnen, Limitieren und Setzen der Duty-Cycle |
ruesipat | 0:a9fe4ef404bf | 88 | |
ruesipat | 0:a9fe4ef404bf | 89 | float dutyCycleLeft = 0.5f+0.5f*voltageLeft/MAX_VOLTAGE; |
ruesipat | 0:a9fe4ef404bf | 90 | if (dutyCycleLeft < MIN_DUTY_CYCLE) dutyCycleLeft = MIN_DUTY_CYCLE; |
ruesipat | 0:a9fe4ef404bf | 91 | else if (dutyCycleLeft > MAX_DUTY_CYCLE) dutyCycleLeft = MAX_DUTY_CYCLE; |
ruesipat | 0:a9fe4ef404bf | 92 | pwmLeft = dutyCycleLeft; |
ruesipat | 0:a9fe4ef404bf | 93 | |
ruesipat | 0:a9fe4ef404bf | 94 | float dutyCycleRight = 0.5f+0.5f*voltageRight/MAX_VOLTAGE; |
ruesipat | 0:a9fe4ef404bf | 95 | if (dutyCycleRight < MIN_DUTY_CYCLE) dutyCycleRight = MIN_DUTY_CYCLE; |
ruesipat | 0:a9fe4ef404bf | 96 | else if (dutyCycleRight > MAX_DUTY_CYCLE) dutyCycleRight = MAX_DUTY_CYCLE; |
ruesipat | 0:a9fe4ef404bf | 97 | pwmRight = dutyCycleRight; |
ruesipat | 0:a9fe4ef404bf | 98 | |
ruesipat | 0:a9fe4ef404bf | 99 | } |