HTGR Knowledge Base
Conference Article: Housing Vibration Control of A Large Rotor Suspended By Magnetic Bearings
Kai Zhang, Hongbin Zhao, Department of Engineering Physics, Tsinghua University, Beijing, CHINA; Lei Zhao, Institute of Nuclear and New Energy Technology, Beijing, CHINAAbstract
This paper introduces a test rotor system suspended by active magnetic bearings for HTR-10 setup, whose mechanical structure is hard to be firm because of space limit and compact design requirements. The system has two severe resonances at a middle frequency band. Housing vibrations coming from the structure resonances can destroy the stability of the system. Special controller designs are needed to restrain them, or even static suspension stability cannot be achieved. A non-parametric frequency domain method was used to identify the system model. The frequency of one of the structure resonances varied markedly with controller stiffness. Modeling the resonances was complex, and a convenient method based on an iterative process of identification and controller parameter tuning was used to deal with the resonances. In controller designs of the process, zero-pole pair method and µ-synthesis method were applied respectively. Their effects were proved by experiments, and their advantages were compared. Such methods are useful in restraining the housing vibrations and are valuable for further work of HTR-10 setup.
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key words: High Temperature Gas Cooled Test Module Reactor (HTR), Active Magnetic Bearing (AMB), Vibration Control
- Reference:
- Proceedings of the Conference on High Temperature Reactors, Beijing, China, September, 22-24, 2004
- International Atomic Energy Agency, Vienna (Austria)
- HTR-2004, pp:1-8
- International Atomic Energy Agency, Vienna (Austria)