The torque ripple is the most outstanding problem of brushless direct current motor(BLDCM), the torque ripple mechanism and reduction are introduced.Modelling permanent magnet synchronous motor field orientation control (FOC), the application of FOC strategy is put forward to reduce the torque ripple of BLDCM, the control strategy and implementation method are given,and the system simulation model is established,the simulation results show the introduced control performance of BLDCM based on FOC is good,and the torque ripple is small.STM32F...