According to the torque ripple of brushless DC motor is the most outstanding problem, this paper introduces the torque ripple and reduction mechanism. The application of field orientation control （FOC） strategy to reduce the torque ripple of brushless DC mo- tor is put forward, the control strategy and implementation method are given, and the system simulation models are established. The system based on FOC is compared with system based on traditional square wave line voltage modulation method, the simulation results show the control performa...
