Magnetic bearing is considered for the usage in various industries. This paper investigates vibration of the rotating shaft supported passively by a repulsive-type magnetic bearing. The permanent magnet on the market not only has strong nonlinear force characteristics, but also may have a few percents of non-uniform magnetization characteristics. Also nonlinear force characteristics change as axial displacement of the shaft. Restoring force of a repulsive-type magnetic bearing is evaluated numerically considering the effects of both the axial displacement of the shaft and the magnetical anisotropicities of the inner and outer magnets. The occurrences of not only the linear and nonlinear parametric characteristics, but also the excitational forces for each pattern of magnetical anisotropicities are observed and they are evaluated in terms of the axial displacement. Furthermore, the influence of each magnetical anisotropicity pattern on the occurrences of various resonance phenomena is clarified.
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ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
September 4–7, 2007
Las Vegas, Nevada, USA
Conference Sponsors:
- Design Engineering Division and Computers and Information in Engineering Division
ISBN:
0-7918-4802-7
PROCEEDINGS PAPER
Vibration of the Vertical Rigid Rotor Supported by a Repulsive-Type Magnetic Bearing: Effects of Both the Axial Displacement and the Magnetical Anisotropicities of Magnets
Tsuyoshi Inoue,
Tsuyoshi Inoue
Nagoya University, Nagoya, Aichi, Japan
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Yukio Ishida,
Yukio Ishida
Nagoya University, Nagoya, Aichi, Japan
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Tomohiro Sugai
Tomohiro Sugai
Nagoya University, Nagoya, Aichi, Japan
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Tsuyoshi Inoue
Nagoya University, Nagoya, Aichi, Japan
Yukio Ishida
Nagoya University, Nagoya, Aichi, Japan
Tomohiro Sugai
Nagoya University, Nagoya, Aichi, Japan
Paper No:
DETC2007-35149, pp. 1271-1280; 10 pages
Published Online:
May 20, 2009
Citation
Inoue, T, Ishida, Y, & Sugai, T. "Vibration of the Vertical Rigid Rotor Supported by a Repulsive-Type Magnetic Bearing: Effects of Both the Axial Displacement and the Magnetical Anisotropicities of Magnets." Proceedings of the ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 1: 21st Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C. Las Vegas, Nevada, USA. September 4–7, 2007. pp. 1271-1280. ASME. https://doi.org/10.1115/DETC2007-35149
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