Rotating unbalance is a costly source of harmful vibration affecting a wide variety of applications such as high-speed machine tools and turbomachinery. Active balancing technology allows adjustment of a machine’s balance state while conditions change as the machine continues to operate. An adaptive control law for single-plane active balancing is presented here for control of steady-state rotation-synchronous vibration. The adaptive control method, based on the well known “influence coefficient” approach, requires no a priori modeling or estimation of plant dynamics. A control “gain” parameter is introduced and shown to enhance stability robustness of the nonadaptive portion of the control law. A recursive on-line system identification method is presented that uses exponential weighted averaging to mitigate the effects of measurement noise and system nonlinearities. Experimental results establish the efficacy of the adaptive control system even in the face of certain nonlinear and time-varying rotordynamic systems.
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Adaptive Influence Coefficient Control of Single-Plane Active Balancing Systems for Rotating Machinery
Stephen W. Dyer,
Stephen W. Dyer
BalaDyne Corporation, Ann Arbor, MI 48108-2254
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Jun Ni
Jun Ni
Department of Mechanical Engineering, The University of Michigan, Ann Arbor, MI 48109-2136
Search for other works by this author on:
Stephen W. Dyer
BalaDyne Corporation, Ann Arbor, MI 48108-2254
Jun Ni
Department of Mechanical Engineering, The University of Michigan, Ann Arbor, MI 48109-2136
Contributed by the Manufacturing Engineering Division for publicaiton in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received June 1999; revised February 2000 Associate Editor: R. Furness.
J. Manuf. Sci. Eng. May 2001, 123(2): 291-298 (8 pages)
Published Online: February 1, 2000
Article history
Received:
June 1, 1999
Accepted:
February 1, 2000
Citation
Dyer, S. W., and Ni, J. (February 1, 2000). "Adaptive Influence Coefficient Control of Single-Plane Active Balancing Systems for Rotating Machinery ." ASME. J. Manuf. Sci. Eng. May 2001; 123(2): 291–298. https://doi.org/10.1115/1.1349554
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