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Compensator Design of Permanent Magnet Synchronous Linear Motor Control System Based on Load Disturbance Observer

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Abstract

Aiming at the problem that the load disturbance generated by the permanent magnet synchronous linear motor (PMSLM) control system will affect its control performance and the load thrust of the PMSLM cannot be observed well, this design proposes two different load disturbance observers, namely the traditional Luenberger observer and novel internal model control (IMC) observer. The IMC observer observes the load disturbance in the form of proportional and integral, which can effectively improve the identification convergence speed and the compensation control effect. While observing the load disturbance, the two observers in this design can also use the generated thrust current compensation as the feedforward compensation of the system, to achieve disturbance suppression and effectively improve the control performance and robustness of the system. The PMSLM control system based on two observers is built in the simulation platform and the superiority of the designed control system is verified. Through the comparison and verification of the two observers and the no-observer system, it can be concluded that the control strategy can accurately track the load disturbance in the PMSLM, simplify the overall structure of the system, and effectively enhance the anti-disturbance capability and dynamic response capability of the PMSLM.

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Acknowledgements

This research was supported by the National Natural Science Foundation of China (No. 51877070, U20A20198, 51577048), the Natural Science Foundation of Hebei Province of China (No. E2021208008).

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Authors and Affiliations

  1. School of Electrical Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China

    Zheng Li, Zi-Hao Zhang, Jin-Song Wang, Kang-Tao Wang & He-Xu Sun

  2. School of Electrical Engineering, Yanshan University, Qinhuangdao, 066004, China

    Zheng Li & Xiao-Qiang Guo

  3. NARI Technology Nanjing Control Systems Co., Ltd., Nanjing, 211106, People’s Republic of China

    Dao-Hu Fan

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  1. Zheng Li
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  2. Zi-Hao Zhang
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Correspondence to Zheng Li or He-Xu Sun.

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Li, Z., Zhang, ZH., Wang, JS. et al. Compensator Design of Permanent Magnet Synchronous Linear Motor Control System Based on Load Disturbance Observer. J. Electr. Eng. Technol. 18, 3709–3720 (2023). https://doi.org/10.1007/s42835-023-01465-4

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