Small power DC motor with electronic commutation. Also known as the commutator motor commutator DC motor. It is half brushless DC motor
Conductor inverter to replace the mechanical commutator, constitutes a general DC motor DC motor without commutator. The motor structure is simple, reliable operation, no spark, low electromagnetic noise, widely used in modern production equipment, instrumentation, computer peripherals and advanced household appliances. Brushless DC motors, synchronous motors and drives, is a typical mechatronic product. The stator windings of the synchronous motor is more than made ??of a three phase star connection, the same three-phase asynchronous motors are very similar. The stick has been magnetized permanent magnet rotor, in order to detect the polarity of the motor rotor position sensor, the motor built. The drive by the power electronic devices and integrated circuits, its function is to: Accept the motor start, stop, brake signal, to control the motor starting, stopping and braking; accept the position sensor signals and reversing signal, used to control the inverse power tube change the bridge off to produce a continuous torque; to accept the speed command and speed feedback signal used to control and adjust the speed; to protect and display

Composition：

Brushless DC motor by a synchronous motor, a rotor position detector and a set of self-control inverter control position detector. Small and medium-sized motor inverter is generally composed by the transistors; large motor inverter typically uses thyristor structure, called a thyristor motor.