Second-Order Sliding Mode Control of Permanent Magnet Synchronous Motor Based on Singular Perturbation

Zhiming Liao (), Yue Hao, Tao Guo, Bingxin Lv and Qiang Wang
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Zhiming Liao: National Maglev Transportation Engineering R&D Center, Tongji University, Shanghai 200092, China
Yue Hao: School of Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
Tao Guo: School of Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
Bingxin Lv: School of Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
Qiang Wang: School of Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China

Energies, 2022, vol. 15, issue 21, 1-13

Abstract: The second-order sliding mode control has strong robustness. Its application has greatly improved the anti-jamming ability of permanent magnet synchronous motor(PMSM) speed control systems. However, the influence of noise is unavoidable due to the introduction of a differentiator in the second-order sliding mode control, and the steady-state performance of the system is poor due to the absence of a q-axis current loop. This paper proposes a second-order sliding mode control method based on singular perturbation, which decouples the PMSM speed control system into two subsystems, the slow subsystem, including the speed variable, adopts second-order sliding mode control, and the fast subsystem, including the current variable of q-axis, adopts linear control. The design of a sliding surface for the slow subsystem avoids the application of the differentiator, which reduces the chattering better. Besides this, the steady-state performance of the system is improved due to the introduction of the feedback current of the q-axis. Experimental results show that the proposed method has strong robustness and can achieve high-precision control.

Keywords: permanent magnet synchronous motor; second-order sliding mode control; singular perturbation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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