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Fixed-Time Sliding Mode Control for Linear Motor Traction Systems with Prescribed Performance

Author

Listed:
  • Chunguang Yang

    (School of Control Technology, Wuxi Institute of Technology, Wuxi 214121, China
    These authors contributed equally to this work.)

  • Guanyang Hu

    (School of Internet of Things Engineering, Jiangnan University, Wuxi 214122, China
    These authors contributed equally to this work.)

  • Qichao Song

    (School of Control Technology, Wuxi Institute of Technology, Wuxi 214121, China)

  • Yachao Wang

    (State Grid Jibei Marketing Service Center, No. 1, Dizangnanxiang Road, Beijing 100000, China)

  • Weilin Yang

    (School of Internet of Things Engineering, Jiangnan University, Wuxi 214122, China)

Abstract

In this research, we propose a fixed-time sliding mode controller using a prescribed performance control approach to address the speed tracking problem in linear motor traction systems, which are powered by high-power permanent magnet linear synchronous motors (PMLSMs). Initially, to tackle the issue of the convergence time and dynamic response associated with traditional finite-time sliding mode controllers, we introduce a fixed-time sliding mode controller. This controller guarantees that the system state converges to the origin within a specified upper time limit. Subsequently, to enhance the dynamic response of the PMLSM and minimize speed errors, we integrate the prescribed performance control strategy with a fixed-time sliding mode controller. This effectively limits the motor’s speed error within the predefined function boundaries, reduces system overshoo, and mitigates system jitter to a certain degree. Finally, simulation results are presented to validate that the proposed control strategy significantly enhances precision of speed tracking in PMLSMs.

Suggested Citation

  • Chunguang Yang & Guanyang Hu & Qichao Song & Yachao Wang & Weilin Yang, 2024. "Fixed-Time Sliding Mode Control for Linear Motor Traction Systems with Prescribed Performance," Energies, MDPI, vol. 17(4), pages 1-12, February.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:4:p:952-:d:1341032
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