一种新型趋近律的永磁同步电机滑模控制  

A PMSM Sliding Mode Control System Based on a Novel Exponential Reaching Law

作　　者：郭小定[1] 柏达 周少武[1] 范婷[1] GUO Xiao-ding;BAI Da;ZHOU Shao-wu;FAN Ting(School of Information and Electrical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China)

机构地区：[1]湖南科技大学信息与电气工程学院

出　　处：《控制工程》2018年第10期1865-1870,共6页Control Engineering of China

基　　金：国家自然科学基金(51577057)

摘　　要：滑模变结构控制能够有效改善永磁同步电机动态品质,提高系统的鲁棒性。在传统指数趋近律的基础上,对等速趋近项进行分析,提出了一种新型指数趋近律,系统在引入该趋近律后保证状态变量趋近速度与滑模面切换函数相关联,实现趋近速率自适应调节的能力。运用该新型趋近律设计PMSM控制系统滑模速度调节器,并与传统指数趋近律和PI速度调节器相对比,仿真结果表明,所设计的控制系统在调速性能上效果得到明显改善,鲁棒性增强,具有良好的静、动态特性。Sliding mode variable structure control has been applied in permanent magnet synchronous motor （PMSM） which can effectively improve its dynamic quality and the robustness of the system. Based on the traditional exponential reaching law, an adaptive exponential reaching law has been proposed, after the introduction of the system reaching law, the state variable approach velocity is ensured to associated with the sliding surface switching function, to achieve an ability of adaptive rate. The PMSM controller of the sliding modespeed control system is designed using this novel reaching law. Compared with the traditional exponential reaching law and PI speed controller, the simulation results show that the new control system has significant improvement in the speed performance, enhanced robustness and good static and dynamic characteristics.

关 键 词：永磁同步电动机 滑模变结构控制 指数趋近律 调速 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]