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TECHNICAL PAPERS

Optimized Realization of Fault-Tolerant Heteropolar Magnetic Bearings

[+] Author and Article Information
Uhn Joo Na, Alan Palazzolo

Texas A&M University, Mechanical Engineering, College Station, Texas 77843-3123

J. Vib. Acoust 122(3), 209-221 (Jan 01, 2000) (13 pages) doi:10.1115/1.1303072 History: Received September 01, 1999; Revised January 01, 2000
Copyright © 2000 by ASME
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References

Figures

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Eight pole heteropolar equivalent magnetic circuit
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Load capacity of the fault tolerant magnetic bearing for 6-7-8th coil failed(Upper Left), 4-6-7-8th coil failed (upper right), 5-6-7-8th coil failed (bottom left), and 2-4-6-7-8th coil failed (bottom right)
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Static deflection of the rotor for the 5-6-7-8th coils failed magnetic bearing
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Finite element model of the flexible rotor
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Fault-tolerant control scheme
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Orbit plot for normal operation to the 5-6-7-8th poles failed operation
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Current inputs for normal operation to the 5-6-7-8th poles failed operation
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Flux densities for normal operation to the 5-6-7-8th poles failed operation
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Orbit plot for normal operation to the 2-4-6-7-8th poles failed operation
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Current inputs for normal operation to the 2-4-6-7-8th poles failed operation
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Flux densities for normal operation to the 2-4-6-7-8th poles failed operation
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Steady state rotor whirling for the 2-4-6-7-8th coil failed operation

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