Control Method of Permanent Magnet Synchronous Motor Based on Programmable Controller
To reduce the speed and torque fluctuations of permanent magnet synchronous motors,a control method based on programmable controllers is proposed.Based on the mathematical model of permanent magnet synchronous motor,a control architecture is constructed using PLC combined with FPGA.The encoder decoding module determines the direction of the motor and measures the speed,while the PLC module uses the PID algorithm to obtain the ex-pected current based on the input speed and expected value.The ADC module collects real-time current,which is transformed into the desired current as input to the PLC to obtain the desired voltage.The voltage is input into the SVPMW module for modulation after inverse transformation to control the motor power.The experiment shows that this method can accurately measure the real-time speed of the motor,quickly control the motor to reach the desired speed,and ensure stable torque and speed fluctuations.
万方数据
维普
