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Control of sound radiation with active/adaptive structuresRecent research is discussed in the area of active structural acoustic control with active/adaptive structures. Progress in the areas of structural acoustics, actuators, sensors, and control approaches is presented. Considerable effort has been given to the interaction of these areas with each other due to the coupled nature of the problem. A discussion is presented on actuators bonded to or embedded in the structure itself. The actuators discussed are piezoceramic actuators and shape memory alloy actuators. The sensors discussed are optical fiber sensors, Nitinol fiber sensors, piezoceramics, and polyvinylidene fluoride sensors. The active control techniques considered are state feedback control techniques and least mean square adaptive algorithms. Results presented show that significant progress has been made towards controlling structurally radiated noise by active/adaptive means applied directly to the structure.
Document ID
19920074244
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Fuller, C. R.
(NASA Langley Research Center Hampton, VA, United States)
Rogers, C. A.
(NASA Langley Research Center Hampton, VA, United States)
Robertshaw, H. H.
(Virginia Polytechnic Institute and State University Blacksburg, United States)
Date Acquired
August 15, 2013
Publication Date
August 22, 1992
Publication Information
Publication: Journal of Sound and Vibration
Volume: 157
Issue: 1 Au
ISSN: 0022-460X
Subject Category
Acoustics
Accession Number
92A56868
Funding Number(s)
CONTRACT_GRANT: N00014-88-K-0566
CONTRACT_GRANT: NAG1-390
CONTRACT_GRANT: N00014-88-K-0721
Distribution Limits
Public
Copyright
Other

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