机电工程技术2025，Vol.54Issue(7)：33-39,7.DOI:10.3969/j.issn.1009-9492.2025.07.007
基于超螺旋滑模观测器的PMSM无位置传感器控制
Sensorless Control of PMSM Based on Superspiral Sliding Mode Observer
摘要
Abstract
In the closed-loop control of permanent magnet synchronous motor(PMSM),sensorless control method does not need external position sensor,so it becomes a research focus to reduce the influence of environment on control performance,and accurate estimation of motor rotor position and speed become the key to ensure control performance.In order to improve the control performance of PMSM without position sensor control,a control method of permanent magnet synchronous motor based on adaptive superspiral sliding mode observer is studied,aiming at overcoming the buffering problem of traditional sliding mode observer and improving the observation accuracy of rotor position and speed.In order to solve the problem of high frequency chattering caused by the switching function in the superhelical sliding mode observer,the sigmoid function in the quasi-sliding mode is used instead of the sign function.An adaptive sliding mode parameter based on rotational speed is added to the rotor velocity position estimation error caused by constant sliding mode coefficient when the rotational speed changes,and an adaptive observer is added to optimize the estimated rotor velocity position estimation error caused by unsmoothness of the estimated back electromotive force.The simulation results show that compared with the traditional observer,the estimation accuracy of rotor position and velocity is further improved,the immunity is enhanced,and the buffeting is effectively suppressed.关键词
永磁同步电机/无传感器控制/自适应/sigmoid函数Key words
permanent magnet synchronous motor/sensorless control/self-adaptation/sigmoid function分类
动力与电气工程引用本文复制引用
黄昊,罗先喜..基于超螺旋滑模观测器的PMSM无位置传感器控制[J].机电工程技术,2025,54(7):33-39,7.基金项目
国家自然科学基金(62063001) （62063001）
