A low-order control algorithm is developed to regulate an infinitely dimensional flexible beam subject to nondecaying, harmonic disturbances of known frequency. The control input is applied at the boundary while the output of concern is at the opposite end of the flexible structure. Only local displacement and velocity at the boundary are required in the control algorithm, which emulates the behavior of a set of mechanical spring, mass, and damper. A virtual spring is integrated with the structure flexibility to establish an internal model for the external disturbance. Such a virtual passive algorithm ensures stability in the presence of structural and parameter uncertainties. It is shown that, by properly choosing the control gains, the output tends to a standstill while the other parts of the system oscillate in such a way as to counteract the harmonic disturbance.
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March 2004
Technical Briefs
Remote Vibration Control for Flexible Beams Subject to Harmonic Disturbances
Shang-Teh Wu
Shang-Teh Wu
Department of Mechanical Engineering, National Yunlin University of Science & Technology, Touliu, Yunlin 640, Taiwan
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Shang-Teh Wu
Department of Mechanical Engineering, National Yunlin University of Science & Technology, Touliu, Yunlin 640, Taiwan
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 May 16, 2002; final revision, August 12, 2003. Associate Editor: C. D. Rahn.
J. Dyn. Sys., Meas., Control. Mar 2004, 126(1): 198-201 (4 pages)
Published Online: April 12, 2004
Article history
Received:
May 16, 2002
Revised:
August 12, 2003
Online:
April 12, 2004
Citation
Wu , S. (April 12, 2004). "Remote Vibration Control for Flexible Beams Subject to Harmonic Disturbances ." ASME. J. Dyn. Sys., Meas., Control. March 2004; 126(1): 198–201. https://doi.org/10.1115/1.1650381
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