Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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基于改进指数趋近律和扰动观测器的PMSM滑模控制

来源:电工电气发布时间:2024-03-11 10:11 浏览次数:55

基于改进指数趋近律和扰动观测器的PMSM滑模控制

陈德海1,2,赖正贵1,李志远1,李明1,陈志文1
(1 江西理工大学 电气工程与自动化学院,江西 赣州 341000;
2 中国科学院赣江创新研究院,江西 赣州 341000)
 
    摘 要:为改善永磁同步电机速度环上传统滑模控制(SMC)中响应速度较慢、抖振较大等不足,提出了一种基于改进指数趋近律和滑模扰动观测器(SMDO)的滑模控制方案。采用连续函数代替符号函数并设计改进指数趋近律以提高系统响应速度,增加以观测误差为变量的滑模扰动观测器来强化系统抗扰能力,基于观测扰动与改进指数趋近律相结合的方法设计了改进的滑模控制器。通过 MATLAB/Simulink 搭建模型,结果表明改进的滑模速度控制配合滑模扰动观测器可以有效改善系统的鲁棒性和动态响应性能。
    关键词: 永磁同步电机;滑模控制;趋近律;滑模扰动观测器
    中图分类号:TM341 ;TM351     文献标识码:A     文章编号:1007-3175(2024)02-0008-07
 
PMSM Sliding Mode Control Based on Improved Exponential
Reaching Law and Disturbance Observer
 
CHEN De-hai1, 2, LAI Zheng-gui1, LI Zhi-yuan1, LI Ming1, CHEN Zhi-wen1
(1 School of Electrical Engineering and Automation, Jiangxi University of Science and Technology, Ganzhou 341000, China;
2 Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China)
 
    Abstract: In order to improve the shortcomings of the traditional Sliding Mode Control (SMC) on the speed loop of Permanent Magnet Synchronous Motor(PMSM), such as slow response speed and large jitter, a sliding mode control scheme based on improved exponential reaching law and Sliding Mode Disturbance Observer (SMDO) was proposed. The continuous function is used to substitute the symbolic function, the exponential reaching law is designed to improve the response speed of the system, and the sliding mode disturbance observer with the observation error as the variable is added to strengthen the anti-interference ability of the system, based on the method of combining the observed perturbation and the improved exponential reaching law, an improved sliding mode controller was designed. Finally, the model is built by MATLAB/Simulink, and the results show that the improved sliding mode velocity control combined with the sliding mode disturbance observer can effectively improve the robustness and dynamic response performance of the system.
    Key words: permanent magnet synchronous motor; sliding mode control; reaching law; sliding mode disturbance observer
 
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