Hello,
Using MC9S12ZVML128_BLDC_Sensorless S/W, I tested BLDC motor by own board.
Stall error was occurred when there is load on BLDC motor.
Please refer to the attached.
stall check function is as below.
void StallCheck(void)
{
tU16 max = 0, min = 65535;
if (periodZC_F_PhA>max){
max = periodZC_F_PhA;
}
if (periodZC_F_PhA<min){
min = periodZC_F_PhA;
}
if (periodZC_F_PhB>max){
max = periodZC_F_PhB;
}
if (periodZC_F_PhB<min){
min = periodZC_F_PhB;
}
if (periodZC_F_PhC>max){
max = periodZC_F_PhC;
}
if (periodZC_F_PhC<min){
min = periodZC_F_PhC;
}
if (periodZC_R_PhA>max){
max = periodZC_R_PhA;
}
if (periodZC_R_PhA<min){
min = periodZC_R_PhA;
}
if (periodZC_R_PhB>max){
max = periodZC_R_PhB;
}
if (periodZC_R_PhB<min){
min = periodZC_R_PhB;
}
if (periodZC_R_PhC>max){
max = periodZC_R_PhC;
}
if(periodZC_R_PhC<min){
min = periodZC_R_PhC;
}
periodZcAvrg = period6ZC / 6;
if((max > (periodZcAvrg << 1)) || (min < (periodZcAvrg >> 1))){
if (stallCheckCounter < STALLCHECK_MAX_ERRORS){
stallCheckCounter++;
}
}else{
if (min < STALLCHECK_MIN_CMT_PERIOD){
if (stallCheckCounter < STALLCHECK_MAX_ERRORS){
stallCheckCounter++;
}
}else{
if (stallCheckCounter > 0){
stallCheckCounter--;
}
}
}
if(stallCheckCounter >= STALLCHECK_MAX_ERRORS){
StallError = 1;
}else{
StallError = 0;
}
}
Would you provide solution for this issue?
Thanks.
