主动电磁轴承-刚性转子系统加速响应的鲁棒性

doi:10.19595/j.cnki.1000-6753.tces.191001

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Abstract

The acceleration response is a significant dynamic characteristic of active magnetic bearings (AMBs)-rigid rotor system. Currently, the research mainly focuses on the steady state characteristics of AMBs-rigid rotor system, and there are few studies on the acceleration characteristics. In this paper, taking AMBs-rigid rotor system as the object, the acceleration characteristics caused by different imbalance mass under PID controller and ${{H}_{\infty }}$ robust controller were studied. Firstly, the dynamic equation of AMBs-rigid rotor system in the process of accelerating motion was established. Then, the design principle of PID controller and ${{H}_{\infty }}$ robust controller and the stability of closed loop system were analyzed. Meanwhile, the influence of PID control parameters on the acceleration characteristics of AMBs-rigid rotor system was studied. Because of strong robustness of ${{H}_{\infty }}$ robust controller, the acceleration characteristics are not sensitive to the system parameters. Finally, simulation and experimental results verified the acceleration characteristics of AMBs-rigid rotor system under PID control and ${{H}_{\infty }}$ robust control. It is shown that the change of PID control parameters affects the acceleration characteristics of the rotor system, while the acceleration characteristics of the AMBs-rigid rotor system by ${{H}_{\infty }}$ robust control are almost not affected by the acceleration, which is quite different from the acceleration characteristics of PID control and traditional rotor system.

Key words： Active magnetic bearings rigid rotor acceleration characteristic PID controller ${{H}_{\infty }}$ robust controller

Received: 06 August 2019

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TM351

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	Gong Lei
	Yang Zhi
	Zhu Changsheng

Cite this article:

Gong Lei,Yang Zhi,Zhu Changsheng. Acceleration Responses Robustness of Active Magnetic Bearings-Rigid Rotor System[J]. Transactions of China Electrotechnical Society, 2021, 36(2): 268-281.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.191001 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I2/268

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