What is difference between sensor brushless dc motor and sensorless brushless motor?
Sensor brushless dc motors use the Hall element in the motor to sense the status and position of the rotor, while non-inductive motors use the ESC back-EMF signal to determine the commutation of the rotor position. The sensory motor can know the position of the rotor when it is at a standstill, but the sensorless motor can only be judged when it is rotated. Therefore, the sensorless motor will shake when it first starts, and it is more difficult to control at low speed. The sensory motor uses Hall Component induction, not easy to be interfered, judgment is more accurate