Study of Brushless Direct Current Motor Control System Based on Field Orientation Control

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.STM32F103B is used as the control core to design the BLDCM control system test platform based on FOC.A BLDCM monitoring system based on VB is designed.The phase current curve is approximate sine wave,speed ripple is small,and the operation is stable.