Imbalance-induced vibration of rotating machineries is an important factor limiting the performance and fatigue life of a rotor system. Particularly, the severe resonant vibration of a rotor when it passes through its critical speeds could damage the rotor system. To avoid this peak vibration, this paper presents an active balancing method to offset the imbalance of the rotor system during acceleration by using an electromagnetic balancer. In this method, “instantaneous” influence coefficients at different speeds are obtained and stored in a look-up table. Then, a gain scheduling strategy is adopted to suppress the imbalance-induced vibration during acceleration based on the “instantaneous” influence coefficient table. A comprehensive testbed is built to validate this scheme, and the validation results are presented.
Extended Influence Coefficient Method for Rotor Active Balancing During Acceleration
Contributed by the Dynamic Systems, Measurement, and Control Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received by the ASME Dynamic Systems and Control Division February 11, 2003; final revision, June 25, 2003. Associate Editor: R. Mukherjee.
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Zhou , S., Dyer , S. W., Shin , K., Shi , J., and Ni , J. (April 12, 2004). "Extended Influence Coefficient Method for Rotor Active Balancing During Acceleration ." ASME. J. Dyn. Sys., Meas., Control. March 2004; 126(1): 219–223. https://doi.org/10.1115/1.1651533
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