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TECHNICAL BRIEFS

Extended Influence Coefficient Method for Rotor Active Balancing During Acceleration

[+] Author and Article Information
Shiyu Zhou

Department of Industrial Engineering, University of Wisconsin-Madison, Madison, WI 53706

Stephen W. Dyer

BalaDyne Corporation, 665 Highland Drive, Ann Arbor, MI 48108

Kwang-keun Shin

Electrical & Controls Integration Lab, General Motors, P.O. Box 9055, Warren, MI 48090

Jianjun Shi

Dept. of Industrial and Operations Engineering, University of Michigan, Ann Arbor, MI 48109

Jun Ni

Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109

J. Dyn. Sys., Meas., Control 126(1), 219-223 (Apr 12, 2004) (5 pages) doi:10.1115/1.1651533 History: Received February 11, 2003; Revised June 25, 2003; Online April 12, 2004
Copyright © 2004 by ASME
Topics: Rotors , Vibration
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References

Dyer, S. W., Hackett, B. K., and Kerlin, J., 1998, “Electromagnetically Actuated Rotating Imbalance Compensator,” U.S. Patent No. 5757662, Issued May 26, 1998.
Goodman,  T. P., 1964, “A Least-Squares Method for Computing Balance Corrections,” ASME J. Eng. Ind., August, pp. 273–279.
Gosiewski,  Z., 1985, “Automatic Balancing of Flexible Rotors, Part 1: Theoretical Background,” J. Sound Vib., 100(4), pp. 551–567.
Gosiewski,  Z., 1987, “Automatic Balancing of Flexible Rotors, Part 2: Synthesis of System,” J. Sound Vib., 114(1), pp. 103–119.
Knospe,  C. R., Hope,  R. W., Tamer,  S. M., and Fedigan,  S. J., 1996, “Robustness of Adaptive Imbalance Control of Rotors with Magnetic Bearings,” J. Vib. Control, 2, 352.
Van De Vegte,  J., and Lake,  R. T., 1978, “Balancing of Rotating Systems During Operation,” J. Sound Vib., 57(2), pp. 225–235.
Van De Vegte,  J., 1981, “Balancing of Flexible Rotors During Operation,” J. Mech. Eng. Sci., 23(5), pp. 257–261.
Wowk, V., 1995, “Machinery Vibration: Balancing,” McGraw-Hill, Inc. New York.
Zhou,  S., and Shi,  J., 2001, “The Analytical Unbalance Response of Jeffcott Rotor during Acceleration,” ASME Transactions, ASME J. Manuf. Sci. Eng., 123, pp. 299–302.
Zhou,  S., and Shi,  J., 2001, “Active Balancing and Vibration Control of Rotating Machinery: A Survey,” Shock Vib. Dig., 33(5), pp. 361–371.
Zhou,  S., and Shi,  J., 2001, “Imbalance Estimation for Speed-Varying Rigid Rotors Using Time-Varying Observer,” ASME Transactions, ASME J. Dyn. Syst., Meas., Control, 123, pp. 637–644.

Figures

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Diagram of active balancing based on influence coefficient table
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The electromagnetic active balancer. (a) a photo of the electromagnetic balancer (b) a diagram of balancer’s working principle (c) a diagram shows a balancer mounting on a toolholder and the coils that supplies powers for the balancer movement.
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The basic structure of the active balancing testbed
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The signal diagram of the active balancing experiment
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The influence coefficients of fadal machine center at various speeds
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Experimental validation results

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