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Robust Feedback Control of a Baffled Plate through Vibroacoustic Optimisation

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Abstract:
This seminar emphasizes the coupling between the structural and control aspects in active structural acoustic control (ASAC). The first part of the presentation examines some peculiar behaviours of piezoelectric shell structures, which have led to unexpected problems in the control design. The second part proposes a structural optimisation strategy to transform the baffled plate problem into a SISO system with "nice" open-loop properties. The third part examines in more detail the design of a volume velocity sensor and proposes a new concept based on a PVDF film with a novel electrode design.

http://www.ulb.ac.be/scmero
Type of Seminar:
Public Seminar
Speaker:
Prof. André Preumont
Université Libre de Bruxelles Active Structures Laboratory 50 Av. F.D.Roosevelt CP165/42 B-1050 Brussels Belgium
Date/Time:
Jun 20, 2001   17:15
Location:

ETH Zentrum, ETZ E 6, Gloriastrasse 35, 8006 Zurich
Contact Person:

Dr. S.Pietrzko
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Biographical Sketch:
André Preumont is professor of Mechanical Engineering and Robotics at the University of Brussels where he is director of the Active Structures Laboratory. He is also part-time professor at the university of Liège. His research interests include structural dynamics, random vibration, robotics, smart structures and active vibration control. He is the author of three books, including "Vibration control of active structures" published by Kluwer in 1997; a second edition is due at the beginning of 2002. He is the recipient of the Five-year Scientific Prize of the FNRS, in Applied Exact Sciences, for the period 1996-2000, "for his fundamental scientific contribution and numerous industrial applications in modelling and active control of complex mechanical structures".