Brushless DC motors is build up with the motor body and the drive. it is a typical mechatronic products. Brushless motor is a type of motor with brushless and commutator ( or collector ring ), also known as no commutator motors.

Brushless DC motor ( referred BLDCM), it is electronically commutated instead of the mechanical commutator , and have the advantages of the small size , light weight , simple structure , easy maintenance , this motor has been widely used. The accuracy cotrolling , stability and anti-jamming capability are the most important factors to measure of overall system performance.