hello there, i have been trying to control a BLDC motor using the Piccolo F20827 controlCard. im having some problems as the motor vibrates uncontrollably. when i observe the outputs of ADC for thr Back Emfs it appears that phase A is almost off all the time with just very little currents occasionaly while thge other two phases b and C seem okay. when I interchange pin position between A and B, same thing happens to Phase B as its value becomes almaost zero all the time. when i change my hardware target and use the piccolo F28035 controlCard, the motor runs smoothly and is well controlled. i dont know what happens here.
querstion1. What is the fundamental difference between these two Cpontrol cards such that one works and the other doesnt?
Question2. could this be a Pin configuration issue in the F28027? why is it that i can sense the back emfs correctly with the f28035, while with the f28027 i can basically sense two phases correctly while the third phase givesz wrong voltage??
I appreciate any insight that you might give that will lead me into solving this issue.I extend my gratitiudes in adcvance.
