To improve the position tracking accuracy and immunity of permanent magnet synchronous motor,a weighted fast terminal sliding mode control method based on extended state observer is proposed.Firstly,to reduce the influence of system disturbance,an extended state observer is designed to estimate the total disturbance of the permanent magnet synchronous motor system.Then,according to the influence of the disturbance on the system,the position error is weighted and taken as a nonlinear term in the sliding mode surface,and the sliding mode surface based on the position error weight is designed.Finally,a fast weighted terminal sliding mode controller is designed to compensate for the disturbance and stabilize the system in a limited time.The simulation results show that compared with the traditional fast terminal sliding mode controller,the proposed control method has faster convergence speed,stronger anti-interference,and can achieve more accurate trajectory tracking when it is disturbed.
关键词
永磁同步电动机/扩展状态观测器/加权快速终端滑模控制/鲁棒性
Key words
permanent magnet synchronous motor/extended state observer/weighted fast terminal sliding mode control/robustness
维普
万方数据