基于改进MRAS的永磁同步电机滑模速度控制设计  

Design of improved MRAS based sliding mode speed control of permanent magnet synchronous motor

作　　者：李光晖 焦提操 纪传省 王汉卿 LI Guanghui;JIAO Ticao;JI Chuansheng;WANG Hanqing(School of Electrical and Electronic Engineering,Shandong University of Technology,Zibo 255000,China)

机构地区：[1]山东理工大学电气与电子工程学院,山东淄博255000

出　　处：《现代电子技术》2024年第14期63-69,共7页Modern Electronics Technique

基　　金：国家自然科学基金项目(62073200);山东省泰山学者项目(TSQN202306191)。

摘　　要：针对传统MRAS观测器在外部干扰和运行工况变化时观测精度差的问题,提出一种改进型MRAS观测器。通过对传统MRAS中的自适应律重新推导,考虑参数分布理论,引入电阻自适应律来进一步提升观测器的性能。为解决传统PI速度控制器无法满足高精度控制的要求,提出一种新型趋近率,设计相应的滑模速度控制器取代传统PI速度控制器。仿真结果表明,与传统的PI控制器和滑模控制器相比,改进后的滑模速度控制器和MRAS观测器具有更优越的控制性能和观测性能,稳定性高、抗负载扰动能力强。In allusion to the diminished observation accuracy in traditional model reference adaptive system(MRAS)observers under external interference and operational variations,an improved MRAS observer is proposed.The performance of the observer is further improved by rederiving the adaptive law in the traditional MRAS,considering the parameter distribution theory and introducing the resistive adaptive law.In order to solve the problem that traditional PI speed controllers cannot meet the requirements of high-precision control,a new approach rate is proposed,and a corresponding sliding mode speed controller is designed to replace the traditional PI speed controller.The simulation results demonstrate that,in comparison with the conventional PI controllers and sliding-mode controllers,the improved sliding-mode velocity controller and MRAS observer can exhibit superior control and observation performance,showing high stability and robust resistance to load disturbances.

关 键 词：永磁同步电机 MRAS观测器 滑模速度控制器 矢量控制 无位置控制 波波夫超稳定性 

分 类 号：TN712-34[电子电信—电路与系统] TM341[电气工程—电机]