Structurally, brushless motors and brush motors have similarities, there are also the rotor and stator, nidec just brush motor structure and contrast; turn brushed motor coil windings, and power output shaft connected to the stator is a permanent magnet magnet.
　　The rotor is a permanent magnet brushless motor, together with housing and output shaft connected together, the stator windings are removed the brush motor for alternating EMF commutation brush, so called brushless motor
　　By a permanent magnet brushless motor rotor, multi-pole brushless DC motor stator windings, position sensor.
　　Change of rotor position sensing by the position, along a certain sequence of the stator winding current commutation (i.e., detection of the rotor poles relative to the stator windings of the position, the position sensor signal and generating at the position determined by the signal conversion circuit processing to control the power switching circuit, according to the logic of the relationship between certain winding current switching). Working voltage servo stator winding electronic switching circuit controlled by the output of the position sensor is provided.