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TECHNICAL PAPERS

Aseismic Vibration Control of Flexible Rotors Using Active Magnetic Bearing

[+] Author and Article Information
Osami Matsushita, Toshio Imashima, Yoshitaka Hisanaga, Hiroki Okubo

Mechanical Engineering Department, National Defense Academy, 1-10-20 Hashirimizu, Yokosuka, Kanagawa, 239-8686, Japane-mail: osami@nda.ac.jp

J. Vib. Acoust 124(1), 49-57 (Jul 01, 2001) (9 pages) doi:10.1115/1.1423633 History: Received July 01, 2000; Revised July 01, 2001
Copyright © 2002 by ASME
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References

Kaga, M., Kikuchi, K., Matsushita, O., Takagi, M., and Furudono, M., 1982, “Quasi-modal Nonlinear Analysis for Seismic Response in Pump Rotor,” IFToMM International Conference on Rotordynamics Problem in Power Plant, pp. 83–93.
Okamoto,  S. and Okada,  H., 1996, “Vibration Analysis of a Squeeze Film Dampers-Flexible Rotor System Subjected to an Earthquake with a Vertical Shock,” J. IMechE Conf. Trans. C500/107, pp. 661–670.
Murai, Y., Watanabe, K., and Kanemitsu, Y., 1988, “Seismic Test on Turbo-Molecular Pumps Levitated by Active Magnetic Bearing,” Proceedings of the 1st International Symposium on Magnetic Bearings, pp. 303–310.
Aruga,  K., Mizoshita,  Y., Iwatsubo,  M., and Hatagami,  T., 1990, “Acceleration Feedforward Control for Head Positioning in Magnetic Disk Drives,” JSME Int. J., Ser. III, 33, No. 1, pp. 35–41.
Suzuki,  Y., 1997, “Vibration Control of an Active Electromagnetic Bearing-Rotor System Excited by Ground Motion,” Trans. Jpn. Soc. Mech. Eng., (in Japanese) Ser. C, 63, No. 610, pp. 89–94.
Matsushita,  O., Hisanaga,  Y., and Saitoh,  S., 1996, “Evaluation of Unbalance Resonance Vibration Control Method for Active Magnetic Bearing Equipped Flexible Rotor,” IMechE Conf. Trans. C500/024, pp. 461–470.
Herbermann, H., and Brunet, M., 1985, “The Active Magnetic Bearing Enables Optimum Control of Machine Vibration,” ASME 85-GT-211, Gas Turbine Conference and Exhibit, pp. 1–9.
Matsushita,  O., Ida,  M., and Takahashi,  R., 1984, “Application of Quasi-model Concept to Rotational Ratio Response Analysis and New Balancing,” IMechE Conf. Trans. C319/84, pp. 427–437.

Figures

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Typical critical speed map
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Typical unbalance response curve
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Mode shapes mode synthesis
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Transformation of coordinate
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Quasi-modal model (3DOF)
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Foundation excitation of 1 DOF system
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Response simulation of seismic excitation
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Test rotor bed on flexible supports
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Seismic excitation response and control (test)
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Response sensitivity (Kobe)
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Tune of feed forward excitation gain parameter
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Response reduction ratio by FF control
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Effect of FF control (test)

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