Active suppression of acoustic radiation from impulsively excited structures

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dc.contributorVirginia Tech. Bradley Department of Electrical and Computer Engineering. Interdisciplinary Center for Applied Mathematics. Smart Materials and Structures Laboratoryen
dc.contributorVirginia Tech. Department of Mechanical Engineering. Interdisciplinary Center for Applied Mathematics. Smart Materials and Structures Laboratoryen
dc.contributor.authorBaumann, William T.en
dc.contributor.authorSaunders, William R.en
dc.contributor.authorRobertshaw, Harry H.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessed2015-05-12en
dc.date.accessioned2015-05-26T19:30:58Zen
dc.date.available2015-05-26T19:30:58Zen
dc.date.issued1991-12-01en
dc.description.abstractThe objective is to use active control to suppress the acoustic energy that is radiated to the far field from a structure that has been excited by a short-duration pulse. The problem is constrained by the assumption that the far-field pressure cannot be directly measured. Therefore, a method is developed for estimating the total radiated energy from measurements on the structure. Using this estimate as a cost function, a feedback controller is designed using linear quadratic regulator theory to minimize the cost. Computer simulations of a clamped-clamped beam show that there is appreciable difference in the total radiated energy between a system with a controller designed to suppress vibrations of the structure and a system with a controller that takes into account the coupling of these vibrations to the surrounding fluid. The results of this work provide a framework for a general, model-based method for actively suppressing transient structural acoustic radiation that can also be applied to steady, narrow, or broadband disturbances.en
dc.description.sponsorshipUnited States. Office of Naval Research - Grant No. N00014-88-K-0721en
dc.format.extent7 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationBaumann, W. T., Saunders, W. R., & Robertshaw, H. H. (1991). Active suppression of acoustic radiation from impulsively excited structures. Journal of the Acoustical Society of America, 90(6), 3202-3208. doi: 10.1121/1.401429en
dc.identifier.doihttps://doi.org/10.1121/1.401429en
dc.identifier.issn0001-4966en
dc.identifier.urihttp://hdl.handle.net/10919/52597en
dc.identifier.urlhttp://scitation.aip.org/content/asa/journal/jasa/90/6/10.1121/1.401429en
dc.language.isoenen
dc.publisherAcoustical Society of Americaen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectControl systemsen
dc.subjectComputer simulationen
dc.subjectControl theoryen
dc.subjectRadiation monitoringen
dc.subjectStructural acousticsen
dc.titleActive suppression of acoustic radiation from impulsively excited structuresen
dc.title.serialJournal of the Acoustical Society of Americaen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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