한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2008년도 춘계학술대회논문집
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- Pages.290-293
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- 2008
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- 1598-2548(pISSN)
Modal Model Reduction for Vibration Control of Flexible Rotor Supported by Active Magnetic Bearing
- Jeon, Han-Wook (KAIST) ;
- Lee, Chong-Won (KAIST) ;
- Seto, Kazuto (Nihon University)
- 발행 : 2008.04.17
초록
This paper proposes a criterion to select the modes for modal truncated model of flexible rotor only supported by active magnetic bearings. The proposed approach relies on the concepts of minimum control input and output energy assuming that the system is subjected to transient disturbances. Accurate large order model for the levitated rotor is taken by finite element analysis and transformed to the modal equation. By proposed methodology, which modal states should be retained in the truncated model are investigated over the whole operational speed range by the calculation. Finally, the effectiveness is verified by checking the model error between original model and reduced model.