Brushless dc motor and dc motor with the same working principle and application characteristics, and its composition is not the same. In addition to the motor itself, the former is more than a commutation circuit, the motor itself and the reversing circuit together. Many small power motor of motor itself is integrated with commutation circuit, look from the appearance of brushless dc motor and the dc motor are exactly the same. Brushless dc motor of the machine itself is electromechanical energy conversion part, it besides motor armature, permanent magnet excitation two points, also with sensors. Motor itself is the core of the brushless dc motor, it is not only related to the performance index, noise, vibration, reliability and service life, etc. , involving the manufacturing costs and product cost. Because use permanent magnet magnetic field, make the brushless dc motor from the traditional design and structure of the dc motor commonly, meet the requirements of various applications market, and development in the direction of the province copper material saving, simple and convenient manufacturing. Permanent magnet magnetic field is closely related to the application of permanent magnetic material, the development of the third generation of the application of permanent magnetic material, make brushless dc motor to efficiency, miniaturization, energy-saving direction. Static motor, small idle current; High efficiency; Small volume.
