Near-field pressure, intensity, and wave-number distributions for active structural acoustic control of plate radiation: Theoretical analysis

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dc.contributorVirginia Tech. Department of Mechanical Engineeringen
dc.contributor.authorWang, Bor-Tsuenen
dc.contributor.authorFuller, Chris R.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessed2015-05-12en
dc.date.accessioned2015-05-27T19:50:25Zen
dc.date.available2015-05-27T19:50:25Zen
dc.date.issued1992-09-01en
dc.description.abstractThis paper presents a theoretical analysis of near-field time-averaged intensity and pressure distributions of actively controlled plate-radiated sound. A harmonic point force was considered as a noise source, and a piezoelectric element bonded to the plate was applied as control actuator. A single microphone that measures sound pressures in the radiated acoustic far field serves as an error sensor. The optimal input voltage to the piezoelectric actuator is obtained by minimizing a quadratic cost function, defined as the mean square of the error sensor signal. The influence of the location of the error microphone on near-field pressure and normal intensity was studied. Fourier transforms in the wave-number domain are also used to study the mechanisms of control. This work provides a better understanding of the behavior inherent in controlling structurally radiated sound using piezoelectric actuators. In particular, an understanding of the near-field behavior under closed loop control is inherent in the design of sensor arrays located near or on the plate surface.en
dc.description.sponsorshipUnited States. Defense Advanced Research Projects Agencyen
dc.description.sponsorshipUnited States. Office of Naval Research - ONR-N00014-88-K-0721en
dc.format.extent10 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationWang, B. T., & Fuller, C. R. (1992). Near-field pressure, intensity, and wave-number distributions for active structural acoustic control of plate radiation: Theoretical analysis. Journal of the Acoustical Society of America, 92(3), 1489-1498. doi: 10.1121/1.405277en
dc.identifier.doihttps://doi.org/10.1121/1.405277en
dc.identifier.issn0001-4966en
dc.identifier.urihttp://hdl.handle.net/10919/52699en
dc.identifier.urlhttp://scitation.aip.org/content/asa/journal/jasa/92/3/10.1121/1.405277en
dc.language.isoen_USen
dc.publisherAcoustical Society of Americaen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectSound pressureen
dc.subjectPiezoelectric devicesen
dc.subjectAcoustic analysisen
dc.subjectAcoustic radiation pressureen
dc.subjectControl theoryen
dc.titleNear-field pressure, intensity, and wave-number distributions for active structural acoustic control of plate radiation: Theoretical analysisen
dc.title.serialJournal of the Acoustical Society of Americaen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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