永磁同步直线电机模糊滑模速度控制研究  

The research of fuzzy sliding mode velocity control of PMLSM

作　　者：张育增[1] 周睿智 李帅[2] Zhang Yuzeng;Zhou Ruizhi;Li Shuai(School of Mechanical Engineering,Shenyang Ligong University,Shenyang 110168;School of Science and Technology,University of Science and Technology Liaoning,Anshan,Liaoning 114051)

机构地区：[1]沈阳理工大学机械工程学院,沈阳110168 [2]辽宁科技大学电子信息工程学院,辽宁鞍山114051

出　　处：《电气技术》2020年第12期23-29,共7页Electrical Engineering

基　　金：国家自然科学基金资助项目(51175349)。

摘　　要：针对永磁直线驱动伺服系统易受负载变化、参数扰动和端部效应的影响,本文提出了一种基于负载推力观测器的新型变指数趋近律模糊滑模变结构控制方法。该方法采用新型变指数趋近律代替传统的变指数趋近律,来改善滑模趋近运动的品质,用负载推力观测器对扰动进行观测补偿,并利用模糊控制代替切换控制,对参数值进行实时在线估计,从而更好地达到了抑制抖振的目的。仿真结果表明:与传统滑模控制器相比,利用该方法控制的系统具有动态响应速度快和鲁棒性能好的特点,并且能够明显地减小系统的跟踪误差。In view of the influence of load variation,parameter disturbance and end effect on the permanent magnet linear drive servo system,this paper proposes a new fuzzy sliding mode speed control method based on the load thrust observer.In this method,a new variable index approach law is used instead of the traditional variable index approach law to improve the quality of the sliding mode approach motion.The disturbance is observed and compensated by the load thrust observer,and the fuzzy control is used instead of the switching control to estimate the parameters on-line in real time,so as to better achieve the purpose of suppressing chattering.The simulation results show that compared with the traditional Sliding mode controller,the system controlled by this method has the characteristics of fast dynamic response and good robustness,and can significantly reduce the tracking error of the system.

关 键 词：永磁直线驱动伺服系统 新型变指数趋近律 负载推力观测器 模糊滑模变结构控制 鲁棒性 跟踪误差 

分 类 号：TM359.4[电气工程—电机]