diff --git a/Main/motorControl.ino b/Main/motorControl.ino index c3bd071..7abcd54 100644 --- a/Main/motorControl.ino +++ b/Main/motorControl.ino @@ -2,76 +2,59 @@ const int MOTOR_SATURATION = round(pow(2, PWM_RESOLUTION)); const float WHEEL_DIAMETER = 0.067708; const float PULSES_PER_TURN = 1320.0; -const float BALANCE_POINT = -0.05; -const float SPEED_REFERENCE = 0.0; -const float DEADBAND_M1_POS = 90.0; -const float DEADBAND_M1_NEG = 90.0; -const float DEADBAND_M2_POS = 90.0; -const float DEADBAND_M2_NEG = 90.0; //Tuning -const float K_SC = 15.0; -const float K_OL = 13.0; -const float K_IL = 80.0; -const float I_IL = 5.5; -const float filter_gain = 15.0; +const float K = 3.5; +const float I = 7.5; +const float filter_gain = 15; //Help variables float M1_Lin_Vel, M2_Lin_Vel; -int Speed_CMD, M1_Speed_CMD, M2_Speed_CMD; +int M1_Speed_CMD, M2_Speed_CMD; +float M1_iError, M2_iError; -float ref_SC, act_SC, error_SC, SC_cont_out; -float ref_OL, act_OL, error_OL, OL_cont_out; -float ref_IL, act_IL, error_IL, iError_IL; +float ref, act, error; void motors() { + //Controllers + ref = pitch * ((4096.0) / (90.0)); + act = M1_Lin_Vel * 4096.0; + error = ref - act; + M1_iError = M1_iError + (error * dT * pow(10, -6) * I); + M1_Speed_CMD = round((error * K) + M1_iError); - // Speed Controller - ref_SC = SPEED_REFERENCE; - act_SC = (M1_Lin_Vel + M2_Lin_Vel) / 2; - error_SC = ref_SC - act_SC; - SC_cont_out = (error_SC * K_SC); +// ref = pitch * ((4096.0) / (90.0)); +// act = M2_Lin_Vel * 4096.0; +// error = ref - act; +// M2_iError = M2_iError + (error * dT * pow(10, -6) * I); +// M2_Speed_CMD = round((error * K) + M2_iError); - // Balance controller - // Outer loop - ref_OL = BALANCE_POINT - SC_cont_out; - act_OL = pitch; - error_OL = ref_OL - act_OL; - OL_cont_out = (error_OL * K_OL); - // Inner loop - ref_IL = OL_cont_out; - act_IL = pitch_rate; - error_IL = ref_IL - act_IL; - iError_IL = iError_IL + (error_IL * dT * pow(10, -6) * I_IL); - Speed_CMD = round((error_IL * K_IL) + iError_IL); - M1_Speed_CMD = Speed_CMD; - M2_Speed_CMD = Speed_CMD; - -// M1_Speed_CMD = 0; -// M2_Speed_CMD = 0; //Calculate speed from encoders M1_Lin_Vel = encoderReader(m1Raw, m1RawLast, M1_Lin_Vel, PULSES_PER_TURN, WHEEL_DIAMETER, dT, filter_gain); - M2_Lin_Vel = encoderReader(m2Raw, m2RawLast, M2_Lin_Vel, PULSES_PER_TURN, WHEEL_DIAMETER, dT, filter_gain); + // M2_Lin_Vel = encoderReader(m2Raw, m2RawLast, M2_Lin_Vel, PULSES_PER_TURN, WHEEL_DIAMETER, dT, filter_gain); - //Motor control - motorControl(1, M1_Speed_CMD, MOTOR_SATURATION, DEADBAND_M1_POS, DEADBAND_M1_NEG); - motorControl(2, M2_Speed_CMD, MOTOR_SATURATION, DEADBAND_M2_POS, DEADBAND_M2_NEG); + //Motor 1 + motorControl(1, M1_Speed_CMD, MOTOR_SATURATION); + + //Motor 2 +// motorSpeed(2, M2_Speed_CMD, MOTOR_SATURATION); + motorControl(2, 0, MOTOR_SATURATION); // Serial plotter - Serial.print("Balance_Point:"); - Serial.print(ref_OL); + Serial.print("M1_Speed_REF:"); + Serial.print(ref * (100.0 / 4096.0)); Serial.print(" "); - Serial.print("Pitch_Angle:"); - Serial.print(act_OL); + Serial.print("M1_Speed_ACT:"); + Serial.print(act * (100.0 / 4096.0)); Serial.print(" "); - Serial.print("Speed_CMD:"); - Serial.println(Speed_CMD * (100.0 / 4096.0)); + Serial.print("M1_Speed_CMD:"); + Serial.println(M1_Speed_CMD * (100.0 / 4096.0)); //Update variables for next scan cycle @@ -80,13 +63,13 @@ void motors() { } float encoderReader(int encRaw, int encRawLast, float lin_vel_filtered_, float pulses_per_turn_, float wheel_diameter_, int dT_, float filt_gain_ ) { - float dEnc_ = encRaw - encRawLast; //[Number of encoder pulses this cycle] - float dTurn_ = dEnc_ / pulses_per_turn_; //[Amount wheel turned this cycle. 1 = full rotation] - float lin_vel_ = (dTurn_ * wheel_diameter_ * PI) / (dT_ * 0.000001); - return lin_vel_filtered_ + ((lin_vel_ - lin_vel_filtered_) * dT_ * 0.000001 * filt_gain_); + float dEnc_ = encRaw - encRawLast; //[Number of encoder pulses this cycle] + float dTurn_ = dEnc_ / pulses_per_turn_; //[Amount wheel turned this cycle. 1 = full rotation] + float lin_vel_ = (dTurn_ * wheel_diameter_ * PI) / (dT_ * 0.000001); + return lin_vel_filtered_ + ((lin_vel_ - lin_vel_filtered_) * dT_ * 0.000001 * filt_gain_); } -void motorControl(byte motorID, int speedCMD_, int saturation, float dbPos_, float dbNeg_) { +void motorControl(byte motorID, int speedCMD_, int saturation) { //Calculate channel byte ch1 = motorID * 2 - 1; byte ch2 = motorID * 2; @@ -99,26 +82,12 @@ void motorControl(byte motorID, int speedCMD_, int saturation, float dbPos_, flo else if (speedCMD_ < -saturation) { speedCMD_ = -saturation; } - - - //Deadband - else if (speedCMD_ > 0 && speedCMD_ < dbPos_) { - speedCMD_ = dbPos_; - } - else if (speedCMD_ < 0 && speedCMD_ > -dbNeg_) { - speedCMD_ = -dbNeg_; - } - - //Zero speed if input = 0 - else if (speedCMD_ == 0) { - speedCMD_ = 0; - } else { speedCMD_ = speedCMD_; } - //Apply speed command to PWM output + //Motor Control if (speedCMD_ > 0) { ledcWrite(ch1, 0); ledcWrite(ch2, speedCMD_);