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. 2023 Jul:138:639-649.
doi: 10.1016/j.isatra.2023.02.008. Epub 2023 Feb 15.

Adaptive generalized super twisting sliding mode control for PMSMs with filtered high-gain observer

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Adaptive generalized super twisting sliding mode control for PMSMs with filtered high-gain observer

Xinpo Lin et al. ISA Trans. 2023 Jul.

Abstract

This paper proposes a novel adaptive-gain generalized super twisting algorithm for permanent magnet synchronous motors. The stability of this algorithm is strict proof using the Lyapunov method. Both controllers of the speed-tracking loop and the current regulation loop are designed according to the proposed adaptive-gain generalized super twisting algorithm. Dynamically adjusted gains in the controllers can improve the transient performance and system's robustness while reducing chattering. A filtered high-gain observer is applied in the speed-tracking loop to estimate the lumped disturbances, including parameter uncertainties and external load torque disturbances. The estimates feeding forward to the controller further improve the robustness of the system. Meanwhile, the linear filtering subsystem reduces the sensitivity of the observer to the measurement noise. Finally, experiments are constructed using the adaptive gain generalized super twisting sliding mode algorithm and the fixed gain one, showing the effectiveness and advantages of the proposed control scheme.

Keywords: Adaptive control; Disturbance observer; Motor drive; Permanent magnet synchronous motor; Sliding mode control.

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Conflict of interest statement

Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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