Sliding-mode anti-disturbance speed control of permanent magnet synchronous motor based on an advanced reaching law

Ying Qu; Bin Zhang; Hairong Chu; Honghai Shen; Jingzhong Zhang; Xiaoxia Yang

doi:10.1016/j.isatra.2023.04.016

Sliding-mode anti-disturbance speed control of permanent magnet synchronous motor based on an advanced reaching law

ISA Trans. 2023 Aug:139:436-447. doi: 10.1016/j.isatra.2023.04.016. Epub 2023 Apr 25.

Authors

Ying Qu¹, Bin Zhang², Hairong Chu³, Honghai Shen², Jingzhong Zhang⁴, Xiaoxia Yang²

Affiliations

¹ Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Science, Changchun 130033, China; The University of Chinese Academy of Sciences, Beijing 100049, China.
² Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Science, Changchun 130033, China.
³ Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Science, Changchun 130033, China. Electronic address: chuhr@ciomp.ac.cn.
⁴ Forest Protection Research Institute of Heilongjiang, Harbin 150040, China.

PMID: 37164877
DOI: 10.1016/j.isatra.2023.04.016

Abstract

In order to improve the performance of a permanent magnet synchronous motor (PMSM) speed controller, an advanced reaching law sliding mode control (ASMC) strategy is proposed in this study. The advanced sliding mode reaching law (ASMRL) introduces a power term of the system state and a checkmark function term about the sliding mode function based on the traditional constant-proportional rate reaching law(TSMRL) , and replaces the sign function with a hyperbolic tangent function. A detailed theoretical analysis of the characteristics of the ASMRL is then presented. The theoretical analysis shows that the ASMRL converges to the sliding mode surface more quickly and with less chattering than the TSMRL. In addition, a sliding mode disturbance observer (SMDO) is designed to estimate the total disturbance of the system, and the estimated disturbance is compensated to ASMC. Then the stability of the system with ASMC and the stability of the system with ASMC+SMDO is proved by Lyapunov's theorem. Finally, the proposed control strategy is validated on an experimental platform of PMSM. The experimental results show that the ASMC has a faster convergence speed, smaller chattering, better disturbance rejection performance than the traditional constant-proportional rate reaching law sliding mode control(TSMC), and better performance with the addition of SMDO.

Keywords: Advanced sliding mode reaching law (ASMRL); Permanent magnet synchronous motor (PMSM); Sliding mode control (SMC); Sliding mode disturbance observer (SMDO).