Robust Sliding Mode Control of the Permanent Magnet Synchronous Motor with an Improved Power Reaching Law

Zhenjie Gong, Xin Ba, Chengning Zhang and Youguang Guo
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Zhenjie Gong: National Engineering Laboratory for Electric Vehicles, Beijing Institute of Technology, Beijing 100081, China
Xin Ba: National Engineering Laboratory for Electric Vehicles, Beijing Institute of Technology, Beijing 100081, China
Chengning Zhang: National Engineering Laboratory for Electric Vehicles, Beijing Institute of Technology, Beijing 100081, China
Youguang Guo: School of Electrical and Data Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia

Energies, 2022, vol. 15, issue 5, 1-13

Abstract: To improve the suppression ability of uncertain disturbance of the sliding mode control driving system of the surface-mounted permanent magnet synchronous motor (SPMSM) and to reduce the chattering of the control output, a robust sliding mode control strategy with an improved power reaching law (IPRL) is proposed in this paper. Compared with the traditional fast power reaching law (FPRL), the IPRL incorporates the sum of the power terms of the system state variables into the conventional power terms, and uses hyperbolic tangent saturation function to replace the piecewise function, which can effectively suppress the sliding mode chattering and improve the convergence speed of the system state to the sliding mode surface. Furthermore, the robust sliding mode speed controller and sliding mode current controller of the SPMSM are designed separately with the IPRL, and detailed simulation verification is carried out to reveal the effectiveness of the IPRL. Simulation and experimental results show that compared with the FPRL, the proposed IPRL can reduce the inherent chattering phenomenon in sliding mode control, and the IPRL-based speed and current control strategy can effectively improve the dynamic performance and robustness of the system.

Keywords: permanent magnet synchronous motor; sliding mode control; chattering; robustness (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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