Transactions of China Electrotechnical Society  2021, Vol. 36 Issue (2): 268-281    DOI: 10.19595/j.cnki.1000-6753.tces.191001
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Acceleration Responses Robustness of Active Magnetic Bearings-Rigid Rotor System
Gong Lei1, Yang Zhi2, Zhu Changsheng1
1. College of Electrical Engineering Zhejiang University Hangzhou 310027 China;
2. No. 704 Research Institute China Shipbuilding Industry Corporation Shanghai 200031 China

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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 wordsActive magnetic bearings      rigid rotor      acceleration characteristic      PID controller      ${{H}_{\infty }}$ robust controller     
Received: 06 August 2019     
PACS: TM351  
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Gong Lei
Yang Zhi
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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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