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A model reference approach for implementing active structural acoustic control

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dc.contributorVirginia Tech. Department of Mechanical Engineeringen
dc.contributor.authorClark, Robert L.en
dc.contributor.authorFuller, Chris R.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessed2015-05-12en
dc.date.accessioned2015-05-27T19:50:17Zen
dc.date.available2015-05-27T19:50:17Zen
dc.date.issued1992-09-01en
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
dc.description.sponsorshipUnited States. Defense Advanced Research Projects Agencyen
dc.description.sponsorshipUnited States. Office of Naval Research - Grant No. ONR-N00014-88-K-0721en
dc.format.extent11 pagesen
dc.format.mimetypeapplication/pdfen
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
dc.identifier.doihttps://doi.org/10.1121/1.403945en
dc.identifier.issn0001-4966en
dc.identifier.urihttp://hdl.handle.net/10919/52645en
dc.identifier.urlhttp://scitation.aip.org/content/asa/journal/jasa/92/3/10.1121/1.403945en
dc.language.isoen_USen
dc.publisherAcoustical Society of Americaen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectAcoustic modelingen
dc.subjectAcoustic sensingen
dc.subjectStructural acousticsen
dc.subjectAcoustic radiation pressureen
dc.subjectAcoustical effectsen
dc.titleA model reference approach for implementing active structural acoustic controlen
dc.title.serialJournal of the Acoustical Society of Americaen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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