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dc.contributorVirginia Tech. Center for Intelligent Material Systems and Structures. Interdisciplinary Center for Applied Mathematicsen_US
dc.contributor.authorBaumann, William T.en_US
dc.contributor.authorHo, Fu-Shengen_US
dc.contributor.authorRobertshaw, Harry H.en_US
dc.date.accessioned2015-05-14T14:51:13Z
dc.date.available2015-05-14T14:51:13Z
dc.date.issued1992-09-01
dc.identifier.citationBaumann, W. T., Ho, F. S., & Robertshaw, H. H. (1992). Active structural acoustic control of broadband disturbances. Journal of the Acoustical Society of America, 92(4), 1998-2005. doi: 10.1121/1.405250
dc.identifier.issn0001-4966
dc.identifier.urihttp://hdl.handle.net/10919/52281
dc.description.abstractA control design technique is developed to actively suppress the acoustic power radiated from a structure, with negligible fluid loading, that is persistently excited by narrow-band or broadband disturbances. The problem is constrained by the assumption that the far-field pressure cannot be measured directly. A method for estimating the total radiated power from measurements on the structure is developed. Using this estimate as a cost function and assuming knowledge of the spectrum of the disturbance, a controller is designed using the linear-quadratic-Gaussian (LQG) theory to minimize the cost. Computer simulations of a clamped-clamped beam show that there is a significant difference in the total radiated power between a system with a vibration-suppression controller and a system with an acoustic controller that accounts for the coupling of these vibrations to the surrounding fluid. In some cases, the acoustic controller increases the system vibration in order to minimize the radiated power.
dc.description.sponsorshipUnited States. Defense Advanced Research Projects Agency
dc.description.sponsorshipUnited States. Office of Naval Research - Grant ONR-00014-88-K-0721
dc.format.extent8 pages
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_US
dc.publisherAcoustical Society of America
dc.subjectControl systemsen_US
dc.subjectComputer simulationen_US
dc.subjectControl theoryen_US
dc.subjectPressure measurementen_US
dc.subjectStructural acousticsen_US
dc.titleActive structural acoustic control of broadband disturbancesen_US
dc.typeArticleen_US
dc.identifier.urlhttp://scitation.aip.org/content/asa/journal/jasa/92/4/10.1121/1.405250
dc.date.accessed2015-05-12
dc.title.serialJournal of the Acoustical Society of America
dc.identifier.doihttps://doi.org/10.1121/1.405250
dc.type.dcmitypeTexten_US


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