Remote Vibration Control for Flexible Beams Subject to Harmonic Disturbances

[+] Author and Article Information
Shang-Teh Wu

Department of Mechanical Engineering, National Yunlin University of Science & Technology, Touliu, Yunlin 640, Taiwane-mail: wust@me.yuntech.edu.tw

J. Dyn. Sys., Meas., Control 126(1), 198-201 (Apr 12, 2004) (4 pages) doi:10.1115/1.1650381 History: Received May 16, 2002; Revised August 12, 2003; Online April 12, 2004
Copyright © 2004 by ASME
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Flexible rod in longitudinal motion: the magnitude and phase of the harmonic disturbance as well as the lumped load are uncertain −JL and me are uncertain constants
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Equivalent structure for the closed-loop system. The controller has the same effect on the flexible rod as the mechanism enclosed in the dashed box.
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Time responses with the remote vibration absorber: (a) θ(l,t) (solid line) and θ(0,t) (dashed line); (b) control input
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Fourth-order controller: a set of positive ks1,ks2, and ms can be determined for each disturbance frequency




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