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TECHNICAL PAPERS

Active Mode Localization in Distributed Parameter Systems with Consideration of Limited Actuator Placement, Part 2: Simulations and Experiments

[+] Author and Article Information
F. J. Shelley, W. W. Clark

Vibration and Control Laboratory, Mechanical Engineering Department, University of Pittsburgh, Pittsburgh, PA 15261

J. Vib. Acoust 122(2), 165-168 (Jul 01, 1995) (4 pages) doi:10.1115/1.568454 History: Received July 01, 1995
Copyright © 2000 by ASME
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References

Figures

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Simply supported beam test fixture. For modeling and control purposes, the beam is divided into six equal parts, as shown below. The center of each section marks the location of displacement measurement and force application.
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Shaping function used for simply supported beam mode localization experiments, shown here with a dark solid line. It is a discretized representation of the probability distribution function, shown with a thick gray line.
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Typical experimental results for the simply supported beam, with excitation at 20 Hz applied to node 5. Note the reduced amplitudes in the isolated area (nodes 1 and 2, on left) for the mode-localized (controlled) case.
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Typical experimental results for the simply supported beam, with random (zero-mean white noise) excitation applied to node 5; control actuators are at nodes 3 and 4
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Typical experimental results for the simply supported beam, with excitation at 200 Hz applied to node 5
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Typical experimental results for the simply supported beam, with excitation at 100 Hz applied to node 5

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