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dc.contributorVirginia Tech. Department of Mechanical Engineeringen_US
dc.contributor.authorClark, Robert L.en_US
dc.contributor.authorFuller, Chris R.en_US
dc.date.accessioned2015-05-27T19:50:17Z
dc.date.available2015-05-27T19:50:17Z
dc.date.issued1992-09-01
dc.identifier.citationClark, R. L., & Fuller, C. R. (1992). A model reference approach for implementing active structural acoustic control. Journal of the Acoustical Society of America, 92(3), 1534-1544. doi: 10.1121/1.403945en_US
dc.identifier.issn0001-4966en_US
dc.identifier.urihttp://hdl.handle.net/10919/52645
dc.description.abstractA model reference active structural acoustic control (ASAC) approach is investigated as a method for replacing microphone error sensors located in the acoustic field with accelerometers located on the structure. The suggested controller is the multi-input/multi-output adaptive LMS algorithm. As opposed to driving the response of the sensor located on the structure to zero with the control inputs, the response is driven to some pre-determined "reference" value corresponding to an a priori training cost function, which is originally chosen to minimize either the far-field pressure at a number of acoustic field points, or the supersonic region of the wave-number transform. In effect, the uncontrolled structure is adaptively modified to behave like the reference structure. Results indicate that the identical optimal control solution can be obtained when implementing the structural sensors, and the required number of sensors must simply equal the number of control actuators. In addition, for the example studied here, significant reduction in far-field sound radiation can be achieved even when errors of +/- 5% are present in the reference model. A considerable level of attenuation in sound can also be achieved for a band of frequencies within +/- 5% of the reference frequency used to obtain the models for creating the disturbance. Thus it appears that the model reference approach is reasonably robust.en_US
dc.description.sponsorshipUnited States. Defense Advanced Research Projects Agencyen_US
dc.description.sponsorshipUnited States. Office of Naval Research - Grant No. ONR-N00014-88-K-0721en_US
dc.format.extent11 pagesen_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_USen_US
dc.publisherAcoustical Society of Americaen_US
dc.subjectAcoustic modelingen_US
dc.subjectAcoustic sensingen_US
dc.subjectStructural acousticsen_US
dc.subjectAcoustic radiation pressureen_US
dc.subjectAcoustical effectsen_US
dc.titleA model reference approach for implementing active structural acoustic controlen_US
dc.typeArticleen_US
dc.identifier.urlhttp://scitation.aip.org/content/asa/journal/jasa/92/3/10.1121/1.403945en_US
dc.date.accessed2015-05-12en_US
dc.title.serialJournal of the Acoustical Society of Americaen_US
dc.identifier.doihttps://doi.org/10.1121/1.403945
dc.type.dcmitypeTexten_US


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