Fixed Structure Sliding Mode Position Tracking Control for Permanent Magnet Linear Synchronous Motor Based on Extended Sliding Mode Disturbance Observer

被引:0
|
作者
Wu Z. [1 ]
Li S. [1 ]
Cheng W. [1 ]
机构
[1] School of Electronic and Information Engineering, University of Science and Technology Liaoning, Anshan
关键词
Chattering; Disturbance observer; Fixed structure sliding mode controller; Permanent magnet linear synchronous motor; Robustness;
D O I
10.19595/j.cnki.1000-6753.tces.201504
中图分类号
学科分类号
摘要
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. © 2022, Electrical Technology Press Co. Ltd. All right reserved.
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页码:2503 / 2512
页数:9
相关论文
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