Aiming at the problems of control overshooting and speed fluctuation accompanied by chattering in the sensorless control system of permanent magnet synchronous motor(PMSM)equipped with super twisting sliding mode observer(STSMO),we propose to optimize the speed-loop PID control method based on the improved covariance matrix adaptation evolution strategy(CMA-ES)with addition of chaotic perturbations operation,which can suppress the persis-tent vibration and overshooting phenomena of the PID-STSMO control system and enhance the robustness of the PMSM control system.Finally,the effectiveness of the proposed observation and control strategy is verified by simulating the designed sensorless control system of PMSM under different working conditions with MATLAB/Simulink software.
维普
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