5.1.1.1 Speed Calculation
(Ask a Question)The rotor speed is calculated based on the change of angle in a given time window. The time window varies based on the motor speed and the speed obtained is scaled appropriately.
The Hall sensors provide the electrical angle of the rotor. The mechanical speed is affected by the number of pole pairs. The Hall interface block uses the number of pole pairs to compute the scaling factor. The speed factor is calculated as:
