In this paper a digital numerical simulation is carried out in which active magnetic bearings (AMB) are applied to control nonlinear and nonsynchronous vibrations of a rigid rotor excited by nonconservative cross-coupling mechanisms. Through an adaptive control algorithm of the AMB controller, unknown cross-coupling parameters of a rotor are estimated on-line by a standard least-square estimator along with a time-varying so-called forgetting factor. The parameters of the AMB controller are adapted in order to compensate for the cross-coupling effects and to stabilize the rotor system. Transient cross-coupling response characteristics are calculated by numerical simulation of a rigid rotor supported by two active magnetic bearings. With this kind of control strategy, the stability of the system can be guaranteed for much higher values of cross-coupling coefficients than with common nonadaptive feedback controllers, designed with pole placement or least square algorithms.
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October 1996
Research Papers
Adaptive Vibration Control of a Rigid Rotor Supported by Active Magnetic Bearings
O. Lang,
O. Lang
Department of Mechanical Engineering, Technical University of Vienna, Vienna, Austria
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J. Wassermann,
J. Wassermann
Department of Mechanical Engineering, Technical University of Vienna, Vienna, Austria
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H. Springer
H. Springer
Department of Mechanical Engineering, Technical University of Vienna, Vienna, Austria
Search for other works by this author on:
O. Lang
Department of Mechanical Engineering, Technical University of Vienna, Vienna, Austria
J. Wassermann
Department of Mechanical Engineering, Technical University of Vienna, Vienna, Austria
H. Springer
Department of Mechanical Engineering, Technical University of Vienna, Vienna, Austria
J. Eng. Gas Turbines Power. Oct 1996, 118(4): 825-829 (5 pages)
Published Online: October 1, 1996
Article history
Received:
February 13, 1995
Online:
November 19, 2007
Citation
Lang, O., Wassermann, J., and Springer, H. (October 1, 1996). "Adaptive Vibration Control of a Rigid Rotor Supported by Active Magnetic Bearings." ASME. J. Eng. Gas Turbines Power. October 1996; 118(4): 825–829. https://doi.org/10.1115/1.2817001
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