The objective of this paper is to describe an imbalance compensation scheme for a rigid rotor supported by magnetic bearings that performs on-line identification of rotor imbalance and allows imbalance cancellation under varying speed of rotation. The proposed approach supplements existing magnetic bearing controls which are assumed to achieve elastic suspension of the rotor. By adopting a physical model of imbalance and utilizing measurements of the spin rate, the proposed algorithm allows the computation of the necessary corrective forces regardless of variations in the spin rate. Convergence of the algorithm is analyzed for single-plane balancing, and is supported by simulation in single- and two-plane balancing, as well as by experimental results in single-plane implementation.
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April 1998
Research Papers
Adaptive Virtual Autobalancing for a Rigid Rotor With Unknown Mass Imbalance Supported by Magnetic Bearings
Kai-Yew Lum,
Kai-Yew Lum
Department of Aerospace Engineering, The University of Michigan, Ann Arbor, MI 48109-2118
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Vincent T. Coppola,
Vincent T. Coppola
Department of Aerospace Engineering, The University of Michigan, Ann Arbor, MI 48109-2118
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Dennis S. Bernstein
Dennis S. Bernstein
Department of Aerospace Engineering, The University of Michigan, Ann Arbor, MI 48109-2118
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Kai-Yew Lum
Department of Aerospace Engineering, The University of Michigan, Ann Arbor, MI 48109-2118
Vincent T. Coppola
Department of Aerospace Engineering, The University of Michigan, Ann Arbor, MI 48109-2118
Dennis S. Bernstein
Department of Aerospace Engineering, The University of Michigan, Ann Arbor, MI 48109-2118
J. Vib. Acoust. Apr 1998, 120(2): 557-570 (14 pages)
Published Online: April 1, 1998
Article history
Received:
February 1, 1995
Revised:
October 1, 1996
Online:
February 26, 2008
Citation
Lum, K., Coppola, V. T., and Bernstein, D. S. (April 1, 1998). "Adaptive Virtual Autobalancing for a Rigid Rotor With Unknown Mass Imbalance Supported by Magnetic Bearings." ASME. J. Vib. Acoust. April 1998; 120(2): 557–570. https://doi.org/10.1115/1.2893865
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