西安工程大学学报2024，Vol.38Issue(1)：1-8,8.DOI:10.13338/j.issn.1674-649x.2024.01.001
改进扩张状态观测器下永磁同步电动机滑模控制
Sliding mode control of permanent magnet synchronous motor based on improved extended state observer
摘要
Abstract
To improve the robustness of permanent magnet synchronous motor(PMSM)servo system,a composite controller based on the combination of improved expanded state observer(ESO)and sliding mode control(SMC)was proposed.First,and SMC based on a novel convergence law was proposed,which introduced a system state variable in the novel convergence law so that the convergence speed could be related to the system state,ensuring that the system state reached the sliding mode surface and converged to zero in a finite time.Secondly,the ESO was utilized to estimate the system state and offset the external perturbations,and a new fal function was proposed to address the problems of the traditional fal function which was prone to cause system jitter and large system gain when the error was large.Fi-nally,the simulation was carried out in Matlab/Simulink.The simulation results show that compared with the system using the traditional sliding mode controller,the response time of the system using the new controller is 0.042 s faster,and there is a better anti-disturbance performance when the load dis-turbance is added,therefore,this system has a better dynamic performance and control accuracy.关键词
永磁同步电动机/滑模控制/自抗扰控制/扩张状态观测器/fal函数Key words
permanent magnet synchronous motor(PSMC)/sliding mode control(SMC)/active disturbance rejection control/extended state observer(ESO)/fal function分类
信息技术与安全科学引用本文复制引用
杨羽萌,朱其新..改进扩张状态观测器下永磁同步电动机滑模控制[J].西安工程大学学报,2024,38(1):1-8,8.基金项目
国家自然科学基金(62063010) （62063010）
泰州市科技计划项目(TG202117) （TG202117）
