S

I have gone through many papers but all of them are on speed control or torque control.

Some questions:

Can i use vector control method for BLDC motors with trapezoidal back-emf? If yes, how do I get d-q axis parameters (Lq, Rq etc.)? If no, what is the other method which can be used?

In Mathematical model of BLDC motor what all parameters are necessary to be considered and what can be ignored?

Basically how to position the shaft so accurately?