Active magnetic bearing (AMB) becomes widely used in various kinds of rotating machinery. However, as the magnetic force is nonlinear, nonlinear phenomena may occur when the rotating speed becomes high and delays of electric current or magnetic flux in the AMB relatively increase. In this paper, the magnetic force in the AMB is modeled by considering both the second-order delay of the electric current and the first-order delay of the magnetic flux. The magnetic flux in the AMB is represented by a power series function of the electric current and shaft displacement, and its appropriate representation for AMB is discussed. Furthermore, by using them, the nonlinear theoretical analysis of the rigid rotor system supported by the AMB is demonstrated. The effects of the delays and other AMB parameters on the nonlinear phenomena are clarified theoretically, and they are confirmed experimentally.
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e-mail: inoue@nuem.nagoya-u.ac.jp
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January 2010
Research Papers
Modeling and Nonlinear Vibration Analysis of a Rigid Rotor System Supported by the Magnetic Bearing (Effects of Delays of Both Electric Current and Magnetic Flux)
Tsuyoshi Inoue,
Tsuyoshi Inoue
Department of Mechanical Science and Engineering, School of Engineering,
e-mail: inoue@nuem.nagoya-u.ac.jp
Nagoya University
, Nagoya 464-8603, Japan
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Yasuhiko Sugawara,
Yasuhiko Sugawara
Daihatsu Motor Co., Ltd.
, 1-1 Daihatsu-cho, Ikeda, Osaka 563-8651, Japan
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Motoki Sugiyama
Motoki Sugiyama
Tokai Rika Co., Ltd.
, 3-260 Toyota, Oguchi-cho, Niwa-gun, Aichi 480-0195, Japan
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Tsuyoshi Inoue
Department of Mechanical Science and Engineering, School of Engineering,
Nagoya University
, Nagoya 464-8603, Japane-mail: inoue@nuem.nagoya-u.ac.jp
Yasuhiko Sugawara
Daihatsu Motor Co., Ltd.
, 1-1 Daihatsu-cho, Ikeda, Osaka 563-8651, Japan
Motoki Sugiyama
Tokai Rika Co., Ltd.
, 3-260 Toyota, Oguchi-cho, Niwa-gun, Aichi 480-0195, JapanJ. Appl. Mech. Jan 2010, 77(1): 011005 (10 pages)
Published Online: September 24, 2009
Article history
Received:
September 8, 2008
Revised:
April 28, 2009
Published:
September 24, 2009
Citation
Inoue, T., Sugawara, Y., and Sugiyama, M. (September 24, 2009). "Modeling and Nonlinear Vibration Analysis of a Rigid Rotor System Supported by the Magnetic Bearing (Effects of Delays of Both Electric Current and Magnetic Flux)." ASME. J. Appl. Mech. January 2010; 77(1): 011005. https://doi.org/10.1115/1.3172139
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