Design of active structural acoustic control systems using a nonvolumetric eigenproperty assignment approach

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dc.contributorVirginia Tech. Department of Mechanical Engineering. Vibration and Acoustics Laboratoriesen
dc.contributor.authorLi, Zhonglinen
dc.contributor.authorGuigou, Catherineen
dc.contributor.authorFuller, Chris R.en
dc.contributor.authorBurdisso, Ricardo A.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessed2015-05-12en
dc.date.accessioned2015-05-27T19:50:22Zen
dc.date.available2015-05-27T19:50:22Zen
dc.date.issued1997-04-01en
dc.description.abstractSound radiation of planar radiators such as beams and plates is known to be directly related to the velocity distribution over the structural surface at low frequencies. For example, nonvolumetric modes correspond to poor sound radiators for small k(0)a. In this work, to achieve significant sound attenuation in the low-frequency range, the SISO eigen assignment technique is used to modify the eigenproperties of a planar structure using structural actuators and sensors so that all the modes of the controlled structure are nonvolumetric. The main advantage of such an approach is that the design is independent of the disturbance characteristics (i.e., type, position, and frequency content) and does not require sensors in the radiation field. The design procedure for the control system in the modal domain is presented. The formulation is applied to a simply supported beam with SISO feedforward control. Radiation efficiency, far-field sound radiated power and mean-square surface velocity are extensively studied. The results show that the control scheme proposed here is very efficient in reducing sound radiation at low frequencies. (C) 1997 Acoustical Society of America.en
dc.description.sponsorshipUnited States. Office of Naval Research - Grant No. ONR N00014-92-J-470en
dc.format.extent9 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationLi, Z., Guigou, C., Fuller, C. R., & Burdisso, R. A. (1997). Design of active structural acoustic control systems using a nonvolumetric eigenproperty assignment approach. Journal of the Acoustical Society of America, 101(4), 2088-2096. doi: 10.1121/1.418139en
dc.identifier.doihttps://doi.org/10.1121/1.418139en
dc.identifier.issn0001-4966en
dc.identifier.urihttp://hdl.handle.net/10919/52675en
dc.identifier.urlhttp://scitation.aip.org/content/asa/journal/jasa/101/4/10.1121/1.418139en
dc.language.isoen_USen
dc.publisherAcoustical Society of Americaen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectAcousticsen
dc.subjectAcoustic wave velocityen
dc.subjectControl systemsen
dc.subjectSurface structureen
dc.subjectAcoustic sensingen
dc.titleDesign of active structural acoustic control systems using a nonvolumetric eigenproperty assignment approachen
dc.title.serialJournal of the Acoustical Society of Americaen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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