Brushless motor controller is composed of main body of the motor and drive, is a typical mechatronics product. Brushless dc motor based on automatic control type of operation, so not as frequency control of motor speed under overloading starting of synchronous motor controller as plus startup winding on the rotor, also won't generate oscillation and step out when load mutation. Brushless motor controller depend on changing the input to the brushless motor controller on the stator coil of alternating current wave frequency and waveform, around the winding coil to form a full rotating motor controller geometry axis of magnetic field, the magnetic field driving permanent magnet on the rotor magnet steel, motor controller turned up and the performance of the motor controller and a number of magnetic steel, magnetic steel, magnetic flux intensity, and the size of the motor controller input voltage and other factors, more and the control of the brushless motor controller performance has much to do, because the input is the direct current, current need electronic governor turned it into three-phase alternating current, also need to receive control signal from the remote control receiver, control the turning speed of the motor controller, to meet the needs of the model using. In general, the structure of the brushless motor controller is relatively simple, really determine its performance or brushless electronic governor, good electronic governor needs a single chip microcomputer control program design, circuit design, control the overall process, such as complex processing technology, so the prices are much higher than a brush motor controller. Brushless dc motor is used semiconductor switching device to realize the electronic commutation, with electronic switching device instead of traditional contact commutator and brush. It has high reliability, no commutation spark, and low mechanical noise, widely used in high-end audio, video, electronic equipment and office automation equipment. , Sara rectification time: 2019 -6 -6