IMPROVED ADAPTIVE SUPER-TWISTING SLIDING MODE CONTROL FOR PERMANENT MAGNET SYNCHRONOUS MOTOR

Sun Chunhu; Zhang Weiliang; Fang Yuanjie

doi:10.19912/j.0254-0096.tynxb.2025-0555

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (8) : 704-714. DOI: 10.19912/j.0254-0096.tynxb.2025-0555

IMPROVED ADAPTIVE SUPER-TWISTING SLIDING MODE CONTROL FOR PERMANENT MAGNET SYNCHRONOUS MOTOR

Sun Chunhu¹, Zhang Weiliang^1,2, Fang Yuanjie¹

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Abstract

In order to improve the convergence time and anti-disturbance performance of the permanent magnet synchronous motor adaptive super-twisting control, an improved adaptive super-twisting controller based on a fixed-time disturbance observer is proposed. By introducing power term in the adaptive super-twisting controller, the convergence speed of the sliding mode controller far away from the origin is accelerated, and the discontinuous symbol function is replaced with a continuous h（s） function, further reducing the vibration. Taking into account the shortcomings of the long convergence time of the traditional disturbance observer and the limited time of the disturbance observer is restricted by the initial state, a fixed-time disturbance observer is designed to make the disturbance converge in a fixed time, and the disturbance estimate value is sent to the sliding mode controller for feed-forward compensation, thereby improving the controller's immunity performance. Finally, the accuracy of the proposed control strategy is verified through simulation comparison between different disturbance observers and sliding mode controllers.

Key words

permanent magnet synchronous motor / disturbance observer / PI control / super-twisting control / active disturbance rejection control / sliding mode control

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Sun Chunhu, Zhang Weiliang, Fang Yuanjie. IMPROVED ADAPTIVE SUPER-TWISTING SLIDING MODE CONTROL FOR PERMANENT MAGNET SYNCHRONOUS MOTOR[J]. Acta Energiae Solaris Sinica. 2026, 47(8): 704-714 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0555

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