Question on the right PWM frequency for Permanent Magnet DC Motors
Now, the main question is this. I took the following test fragment from a thesis. Is this approach correct or reliable?


The quoted passage is about field-control of a wound-field DC motor with a commutator. It has no relevance to armature control of a permanent magnet DC motor.


  This is the motor I'm controlling: The board that controls this motor measures speed and current. Does this data help in finding what is best for this motor?


The motor nameplate provides the rated: armature voltage and current and the rated horsepower and RPM. You could see if the manufacturer has published the motor time constant and use the procedure given in the other question. You could also look for the motor manufacturer's recommendations about controllers.