改进滑模观测器的永磁同步电动机无传感器控制  

Sensorless Control for Permanent Magnet Synchronous Motor Based on Improved Sliding Mode Observer

作　　者：齐歌 赵学铭 马丁[2] QI Ge;ZHAO Xue-ming;MA Ding(School of Electrical Engineering,Zhengzhou University,Zhengzhou 450001,China;School of Artificial Intelligence and Big Data,Henan University of Technology,Zhengzhou 450001,China)

机构地区：[1]郑州大学电气工程学院,郑州450001 [2]河南工业大学人工智能与大数据学院,郑州450001

出　　处：《组合机床与自动化加工技术》2022年第3期92-96,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：河南省自然科学基金(182300410182)。

摘　　要：针对传统滑模观测器的反电动势估计值中的抖振和低次谐波问题,提出基于频率自适应复系数滤波器的超扭曲滑模观测器。超扭曲滑模观测器中的超扭曲函数代替了传统滑模观测器中的不连续切换函数,削弱了传统滑模观测器中的抖振问题。为滤除反电动势中的低次谐波,在超扭曲滑模观测器的基础上加入自适应复系数滤波器,利用其在中心频率处没有相移和幅度衰减的特性,抑制反电动势中低次谐波。在理论分析基础上搭建Simulink仿真模型,对所提的改进的滑模观测器结构进行仿真实验验证,通过仿真结果进行对比分析,证实了所提方法的有效性。Aiming at the problem of chattering and low order harmonics are difficult to filter out in traditional sliding mode observers,a super twisting sliding mode observer based on frequency adaptive complex coefficient filter is proposed.The super twist function in the super twisting sliding mode observer replaces the discontinuous switching function in the traditional sliding mode observer,which weakens the chattering problem in the traditional sliding mode observer.Since the first-order low-pass filter in the traditional sliding mode observer can only filter out the high-frequency signal in the back EMF,it is difficult to filter the low-order harmonics in the back EMF.Therefore,an adaptive complex coefficient filter is added on the basis of the super twisting sliding mode observer,and its characteristics of no phase shift and amplitude attenuation at the center frequency are used to suppress the low-order harmonics of the back electromotive force.A Simulink simulation model was built on the basis of theoretical analysis,and the improved sliding mode observer structure was verified by simulation experiments.The comparison and analysis of the simulation results confirmed the effectiveness of the proposed method.

关 键 词：永磁同步电动机 滑模观测器 超扭曲算法 自适应复系数滤波器 无传感器控制 

分 类 号：TH165[机械工程—机械制造及自动化] TG66[金属学及工艺—金属切削加工及机床]