关键词: 永磁同步电机, 滑模控制器, 模型参考自适应, 扰动观测器

Abstract: To enhance the control performance and robustness of permanent magnet synchronous motors under different environments,and to solve the chattering problem of traditional sliding mode control, this paper proposed an innovative control strategy based on disturbance adaptive observer. The strategy replaced the traditional PI controller with a sliding mode speed controller based on a new type of approach law to improve the system' s dynamic response. The super-spiral sliding mode algorithm and the disturbance observation matrix were introduced to construct the
disturbance adaptive observer. Combined with a new disturbance feedback mechanism, the precise tracking of rotor position angle information and real-time updating of motor parameters were achieved. The simulation results showed that the strategy can significantly improve the stability of motor operation, reduced the speed fluctuation under sudden load changes,accelerated the convergence speed of speed error,improved the identification accuracy of speed and rotor position during the entire variable speed operation stage, and demonstrated excellent dynamic and steady-state performance and control accuracy.

Key words: permanent magnet synchronous motor,sliding mode control,model reference adaptive,disturbance observer