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Noise Control in a Duct System with Online-tuned Shunted Piezoeletric Materials

Author(s):

D. Niederberger, Stan Pietrzko, M. Morari
Conference/Journal:

San Diego, USA, SPIE's Annual International Symposium on Smart Structures and Materials, 14-18 March
Abstract:

This paper presents an application of resonant piezoelectric shunt damping to reduce sound radiated by a clamped square aluminium plate. The plate is mounted in a duct system and excited by plane waves. The sound radiation of the plate is evaluated by measuring the volume velocity and radiated sound power. Results show a significant reduction of the radiated sound power, if the resonant shunt circuit is tuned around the first natural frequency of the plate. Additionally, the performance of the online-tuned resonant shunt for varying operating conditions is compared with a not online-tuned shunt. It is shown that the online-tuned shunt keeps optimal noise reduction for varying temperature.

Further Information
Year:

2004
Type of Publication:

(01)Article
Supervisor:



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% Autogenerated BibTeX entry
@Article { NiePie:2004:IFA_56,
    author={D. Niederberger and Stan Pietrzko and M. Morari},
    title={{Noise Control in a Duct System with Online-tuned Shunted
	  Piezoeletric Materials}},
    journal={SPIE's Annual International Symposium on Smart Structures
	  and Materials},
    year={2004},
    volume={},
    number={},
    pages={},
    month=mar,
    url={http://control.ee.ethz.ch/index.cgi?page=publications;action=details;id=56}
}
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