Brushless motor and a brush

Brush motors and brushless motor is equipped with the commonly used is the difference between a brush -The commutator. Have a commutation of brushless dc motor has been through graphite brush and mounted on the rotor commutator ring in contact. While by hall sensor brushless motor rotor position feedback control circuit, back to know the exact time of the motor phase commutation. Most of the brushless motor manufacturers production positioning with three hall effect sensors. Because of brushless motor without brush, so also does not have relevant interface, therefore more clean, less noise, in fact, no maintenance, longer life.