Fixed Structure Sliding Mode Position Tracking Control for Permanent Magnet Linear Synchronous Motor Based on Extended Sliding Mode Disturbance Observer
Wu Zhitao, Li Shuai, Cheng Wansheng
School of Electronic and Information Engineering University of Science and Technology Liaoning Anshan 114051 China
Abstract：Since the permanent magnet linear synchronous motor position servo system is susceptible to parameter disturbance, external disturbance and end effect, this paper proposes a composite sliding mode position control method based on fixed structure sliding mode controller and extended sliding mode disturbance observer. By adding restriction conditions, the fixed structure sliding mode controller ensures that the system state is located on the same side of the sliding mode surface, which weakens the chattering caused by the switch control of the conventional variable structure sliding mode controller and improves the quality of the sliding mode sliding motion. The extended sliding mode disturbance observer can compensate the system disturbance items that cannot be accurately measured in the fixed structure sliding mode controller, thereby eliminating the influence of the system disturbance items. In the end, the experiment indicates that the composite sliding mode control method is effective. Compared with the conventional sliding mode control, the compound position of sliding mode control method with superior tracking accuracy can weaken the chattering phenomenon and strengthen the robustness of position tracking system.
武志涛, 李帅, 程万胜. 基于扩展滑模扰动观测器的永磁直线同步电机定结构滑模位置跟踪控制[J]. 电工技术学报, 2022, 37(10): 2503-2512.
Wu Zhitao, Li Shuai, Cheng Wansheng. Fixed Structure Sliding Mode Position Tracking Control for Permanent Magnet Linear Synchronous Motor Based on Extended Sliding Mode Disturbance Observer. Transactions of China Electrotechnical Society, 2022, 37(10): 2503-2512.
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2022, Vol. 37 
