基于改进扩展状态观测器的永磁同步电动机的自适应滑模控制  

Adaptive sliding mode control of permanent magnet synchronous motor based on improved extended state observer

作　　者：刘泽奇 刘永慧(指导) LIU Zeqi;LIU Yonghui(School of Electrical Engineering,Shanghai Dianji University,Shanghai 201306,China;School of Intelligent Manufacturing and Control Engineering,Shanghai Polytechnic University,Shanghai 201209,China)

机构地区：[1]上海电机学院电气学院,上海201306 [2]上海第二工业大学智能制造与控制工程学院,上海201209

出　　处：《上海电机学院学报》2024年第5期249-255,共7页Journal of Shanghai Dianji University

基　　金：国家自然科学基金资助项目(61803253)。

摘　　要：永磁同步电动机运行过程中存在负载扰动和参数摄动等问题,从而影响永磁同步电动机的转速。为提高永磁同步电动机的抗干扰性,提出了基于改进扩展状态观测器的自适应滑模控制策略。首先,设计改进的扩展状态观测器,根据扰动的大小动态调整扩展状态观测器增益,提高了系统的响应速度。其次,设计自适应滑模控制器,通过代价函数评定出最优滑模面系数,并进一步设计自适应滑模面,提高系统的收敛速度。最后,通过引入自适应律,在线估计扰动的观测误差。仿真结果表明:所提出的方法能够有效克服负载扰动和参数摄动对永磁同步电动机转速的影响,提高了系统的鲁棒性。To address the issues in the operation of permanent magnet synchronous motors(PMSM),such as load disturbances and parameter variations that can affect the speed of the motors,an adaptive sliding mode control strategy based on an improved extended state observer is proposed to improve the robustness of PMSM.First,an improved extended state observer is designed to dynamically adjust the observer gain according to the magnitude of the disturbance,and the response speed of the system is improved.Second,an adaptive sliding mode controller is designed to determine the optimal sliding mode surface coefficient through a cost function,and further an adaptive sliding mode surface is designed to improve the convergence speed of the system.Finally,an adaptive law is introduced to estimate the observation error of the disturbance online.The simulation results show that the proposed method can effectively overcome the influence of load disturbances and parameter perturbations on the speed of PMSMs and improve the robustness of the system.

关 键 词：永磁同步电机 改进扩展状态观测器 滑模控制 自适应律 

分 类 号：TM711[电气工程—电力系统及自动化]