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TECHNICAL PAPERS

Robust Control of a 2D Acoustic Enclosure*

[+] Author and Article Information
Hemanshu R. Pota, Ian R. Petersen

School of Electrical Engineering, UNSW at the Australian Defense Force Academy, Canberra ACT, 2600, Australia

Atul G. Kelkar

Department of Mechanical Engineering, Iowa State University, Ames, IA 50011e-mail: akelkar@isu.edu

J. Vib. Acoust 125(3), 374-383 (Jun 18, 2003) (10 pages) doi:10.1115/1.1570447 History: Received December 01, 2001; Revised February 01, 2002; Online June 18, 2003
Copyright © 2003 by ASME
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References

Figures

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The experimental 2D enclosure
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Schematic of the experimental 2D enclosure
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Uncertain system representation
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Stochastic uncertain system
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The scaled H control problem
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Two dimensional duct feedback controller setup
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Experimental and identified disturbance speaker response
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Experimental and identified control speaker response
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Uncertainty bound (dashed-20 log 10|W(jω)|,solid-20 log 10|P̃2(jω)−P2(jω)|/‖P1(jω)|)
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Nyquist plot of the loop-gain
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Simulated closed loop and open loop response
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Experimental closed loop and open loop response
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Experimental and identified control speaker response
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Experimental and identified disturbance speaker response
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Experimental open loop and closed loop response
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Experimental closed loop and open loop response
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Uncertainty bound (dashed-20 log 10|W(jω)|,solid-20 log 10|P̃2(jω)−P2(jω)|/‖P1(jω)|)
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Uncertainty bound (dashed-20 log 10|W(jω)|,solid-20 log 10|P̃2(jω)−P2(jω)|/‖P1(jω)|)

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