Brushless motor controller is to use semiconductor switching device to realize the electronic commutation, the use of 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. By the permanent magnet brushless motor controller, multipolar winding of the stator and rotor position sensor, etc. Position sensing according to the change of rotor position, along a certain sequence of stator winding current converter (By detecting the rotor magnetic pole relative to the position of the stator winding, and in determining the location of the position sensor signal, the signal conversion circuit to control the power switch circuit, after processing according to certain logic relation between winding current switch)。 The working voltage of stator winding electronic switching circuit controlled by the position sensor output.
