基于自适应滑模观测器的PMSM无传感器控制  

Sensorless Control of PMSM Based on Adaptive Sliding Mode Observer

作　　者：李瑞熙 周士贵 柴方博 罗晓东 张可程 LI Ruixi;ZHOU Shigui;CHAI Fangbo;LUO Xiaodong;ZHANG Kecheng(College of Engineering,Qufu Normal University,Rizhao 276800,China;Rizhao Dongfang Electric Machinery Co.,Ltd.,Rizhao 276800,China)

机构地区：[1]曲阜师范大学工学院,日照276800 [2]日照东方电机有限公司,日照276800

出　　处：《微特电机》2025年第3期66-72,共7页Small & Special Electrical Machines

基　　金：山东省自然科学基金面上项目(ZR2021ME017);科技型中小企业创新能力提升工程(2021TSGC1429)。

摘　　要：针对永磁同步电机(PMSM)无传感器控制,但滑模观测器存在快速响应和输出抖振的矛盾。为了抑制滑模观测器的抖振、提高辨识精度,提出了一种改进自适应超螺旋滑模观测器。为了改善滑模抖振现象,设计了分段平方根切换函数取代符号函数;设计了自适应方案来动态调节滑模系数,可同时兼顾观测器的收敛速度和抖振程度。设计自适应反电动势估计器,用于消除反电动势噪声,提高辨识精度。设计龙伯格观测器来解算转子速度和位置,有效减小了辨识位置的相位延迟和误差。通过不同转速下的对比实验,验证了所提自适应超螺旋滑模无传感器控制策略在位置和速度辨识精度以及动态性能方面都更具优越性。because of its strong robustness and fast response.However,the sliding mode observer has the contradiction between fast response and output chattering.In order to suppress the chattering from sliding mode observer and improve the identification accuracy,An improved adaptive super-twisting sliding mode observer was introduced for the sensorless control of permanent magnet synchronous motor(PMSM).With the intention of improving the chattering phenomenon of sliding mode,the piecewise square root switching function was devised to substitute the sign function.An adaptive scheme was designed to dynamically adjust the sliding mode coefficient,which can simultaneously consider the convergence speed of the observer and the degree of chattering.Adaptive back-EMF estimator was designed to eliminate the back electromotive force noise and improve the identification accuracy.The Luenberger observer was designed to calculate the rotor speed and position,which can effectively reduce the phase delay and error of the identification position.Through the comparison experiments under different motor speed,it was verified that the proposed adaptive super-twisting sliding mode sensorless control strategy has superior performance in position and speed identification accuracy as well as dynamic performance.

关 键 词：永磁同步电机 自适应控制 超螺旋滑模观测器 龙伯格观测器 

分 类 号：TM351[电气工程—电机]