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TECHNICAL PAPERS

An Active-Passive Piezoelectric Absorber for Structural Vibration Control Under Harmonic Excitations With Time-Varying Frequency, Part 2: Experimental Validation and Parametric Study

[+] Author and Article Information
R. A. Morgan, K. W. Wang

Structural Dynamics and Controls Lab, Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802

J. Vib. Acoust 124(1), 84-89 (Jul 01, 2001) (6 pages) doi:10.1115/1.1419202 History: Received August 01, 2000; Revised July 01, 2001
Copyright © 2002 by ASME
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References

Figures

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Experimental test setup
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Experimental response envelopes (nonresonant case): (a) ḟ=2 Hz/s (b) ḟ=8 Hz/s
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Experimental response envelopes (resonant case): (a) ḟ=2 Hz/s (b) ḟ=8 Hz/s
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Steady-state performance example of filtered-x controller
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Performance of filtered-x controller vs. adaptation gain α (Δ=.05)
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Effects of absorber damping ratio (Gac=5, Δ=.05)
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Effects of active coupling gain (ζcl=.0004, Δ=.05) (a) relative performance (b) relative control voltage
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Effects of active coupling gain on relative control voltage (ζcl=.0004, Δ=.15)
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Effects of active coupling gain (ζcl=.002, Δ=.05) (a) relative performance (b) relative control voltage
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Effects of active coupling gain (ζcl=.002, Δ=.15) (a) relative performance (b) relative control voltage

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