First version of program for measuring current of three phase BLDC motor.
Dependencies: AutomationElements CurrentRegulation_ mbed
CurrentMeasurement.cpp
- Committer:
- dfraj
- Date:
- 2015-07-18
- Revision:
- 0:c499ebd23db0
File content as of revision 0:c499ebd23db0:
#include "CurrentMeasurement.h" CurrentMeasurement::CurrentMeasurement(PinName pI_A, PinName pI_B, PinName pI_C, PinName pI_TOTAL):I_A(pI_A), I_B(pI_B), I_C(pI_C), I_TOTAL(pI_TOTAL){ setValues(1e-3, 1e3, 1e3, 40e3, 20e3, 3.3); calculateCurrentA(); calculateCurrentB(); calculateCurrentC(); calculateCurrentTotal(); } CurrentMeasurement::CurrentMeasurement(PinName pI_A, PinName pI_B, PinName pI_C, PinName pI_TOTAL, float R_sh, float R_1s, float R_1t, float R_fs, float R_ft, float V_ref):I_A(pI_A), I_B(pI_B), I_C(pI_C), I_TOTAL(pI_TOTAL){ setValues(R_sh, R_1s, R_1t, R_fs, R_ft, V_ref); calculateCurrentA(); calculateCurrentB(); calculateCurrentC(); calculateCurrentTotal(); } void CurrentMeasurement::setValues(float R_sh, float R_1s, float R_1t, float R_fs, float R_ft, float V_ref){ this->R_sh = R_sh; this->R_1s = R_1s; this->R_1t = R_1t; this->R_fs = R_fs; this->R_ft = R_ft; this->V_ref = V_ref; } float CurrentMeasurement::calculateCurrentA(){ return I_A_ = (R_sh * R_1s * (V_ref * I_A.read()))/R_fs - (R_sh * R_1s * (V_ref/2))/R_fs; } float CurrentMeasurement::calculateCurrentB(){ return I_B_ = (R_sh * R_1s * (V_ref * I_B.read()))/R_fs - (R_sh * R_1s * (V_ref/2))/R_fs; } float CurrentMeasurement::calculateCurrentC(){ return I_C_ = (R_sh * R_1s * (V_ref * I_C.read()))/R_fs - (R_sh * R_1s * (V_ref/2))/R_fs; } float CurrentMeasurement::calculateCurrentTotal(){ return I_TOTAL_ = (R_1t * (V_ref * I_TOTAL.read()))/(R_ft * R_sh) - (R_1t * (V_ref/2))/(R_ft * R_sh); }