Model-free fast integral terminal sliding-mode control method based on improved fast terminal sliding-mode observer for PMSM with unknown disturbances

Kaihui Zhao; Wenchang Liu; Ruirui Zhou; Wangke Dai; Sicheng Wu; Pengqi Qiu; Yang Yin; Ning Jia; Jinwu Yi; Gang Huang

doi:10.1016/j.isatra.2023.09.025

Model-free fast integral terminal sliding-mode control method based on improved fast terminal sliding-mode observer for PMSM with unknown disturbances

ISA Trans. 2023 Dec:143:572-581. doi: 10.1016/j.isatra.2023.09.025. Epub 2023 Sep 27.

Authors

Kaihui Zhao¹, Wenchang Liu², Ruirui Zhou³, Wangke Dai⁴, Sicheng Wu⁵, Pengqi Qiu⁶, Yang Yin⁷, Ning Jia⁸, Jinwu Yi⁹, Gang Huang¹⁰

Affiliations

¹ College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China; School of Engineering, Tokyo University of Technology, Hachioji 192-0982, Japan. Electronic address: zhaokaihui@hut.edu.cn.
² College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China. Electronic address: m20085800046@stu.hut.edu.cn.
³ School of Traffic and Transportation Engineering, Central South University, Changsha 410073, China. Electronic address: zhouruirui@csu.edu.cn.
⁴ College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China. Electronic address: m19085207004@stu.hut.edu.cn.
⁵ College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China. Electronic address: m19085207013@stu.hut.edu.cn.
⁶ College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China. Electronic address: m20080800019@stu.hut.edu.cn.
⁷ College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China. Electronic address: yyyinyang1997@163.com.
⁸ College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China. Electronic address: m21080800001@stu.hut.edu.cn.
⁹ College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China. Electronic address: m21085800010@stu.hut.edu.cn.
¹⁰ College of Railway Transportation, Hunan University of Technology, Zhuzhou 412007, China. Electronic address: 12120@hut.edu.cn.

PMID: 37798205
DOI: 10.1016/j.isatra.2023.09.025

Abstract

This paper presents a novel model-free fast integral terminal sliding-mode control (MFFITSMC) method based on an improved fast terminal sliding-mode observer (IFTSMO) for permanent magnet synchronous motor (PMSM) drive system, which can effectively eliminate the impact caused by unknown disturbances, such as parameter perturbations and external disturbances. The PMSM mathematical model with unknown disturbances is first established, and the ultra-local model (ULM) of the PMSM speed loop is constructed. Next, the model-free fast integral terminal sliding-mode controller is designed in the speed loop based on the ULM. Then, the IFTSMO is designed to precisely estimate the unknown term of the ULM, and the estimated unknown term is fed back to the MFFITSMC controller to perform compensation for unknown disturbances in real time. Finally, compared with the proportional-integral (PI) control method and the conventional model-free sliding-mode control (MFSMC) method, the results of simulations and experiments demonstrate that the presented MFFITSMC method reduces the dependence on the precise model and achieves the purpose of anti-disturbance control of the PMSM drive system.

Keywords: Improved fast terminal sliding-mode observer (IFTSMO); Model-free fast integral terminal sliding-mode control (MFFITSMC); Permanent magnet synchronous motor (PMSM); Ultra-local model (ULM).