基于绝对指数积分的永磁同步电机控制  

Control of Permanent Magnet Synchronous Motor Based on Absolute Exponential Integration

作　　者：林涵 王珊珊 LIN Han;WANG Shanshan(School of Electrical and Information Engineering,Anhui University of Science and Technology,Huainan Anhui 232001,China)

机构地区：[1]安徽理工大学电气与信息工程学院,安徽淮南

出　　处：《安徽理工大学学报（自然科学版）》2023年第5期17-23,共7页Journal of Anhui University of Science and Technology:Natural Science

基　　金：安徽省自然科学基金资助项目(1808085QF197);安徽高校自然科学重点项目(KJ2020A307)。

摘　　要：针对永磁同步电机在转速追踪时误差不能有效积累的问题,提出一种改进的积分滑模控制策略。首先,引入积分滑模面解决传统滑模控制中的高频抖振现象,并在积分滑模面上增加绝对指数积分项,以提高滑模面的收敛速率。其次,设计一种新的趋近率,该趋近率中的指数项有利于平衡系统的快速收敛与抖振之间的矛盾。最后,为进一步提高闭环控制系统的稳定性,设计负载观测器作为速度环控制器的实时补偿。仿真结果表明,新的速度环控制器结合负载观测器混和控制策略显著提升了系统的鲁棒性和负载适应能力,使得系统能够更好地应对负载变化和外部干扰,并实现更稳定、精确的控制性能。An improved integral sliding mode control strategy was proposed for the permanent magnet synchronous motor in which the errors could not accumulate effectively during speed tracking.Firstly,an integral sliding mode surface was introduced to solve the high frequency chattering phenomenon in the traditional sliding mode control,and an absolute exponential integrational term was added to improve the convergence rate of the sliding mode surface.Secondly,a new convergence rate was designed and the exponential term in this convergence rate was helpful to balance the contradiction between the fast convergence and the chattering of the system.Finally,to further improve the stability of the closed-loop control system,a load observer was designed as a real-time compensation for the speed loop controller.The simulation results indicated that the hybrid control strategy of the new speed loop controller with load observer significantly improved the robustness and load adaption capability of the system,enabling the system to cope with load variables and external disturbances and achieve more stable and accurate control performance.

关 键 词：绝对指数积分 趋近率 指数项 负载观测器 

分 类 号：TM351[电气工程—电机]