An experimental study implementing model reference active structural acoustic control

dc.contributorVirginia Tech. Department of Mechanical Engineeringen
dc.contributor.authorClark, Robert L.en
dc.contributor.authorGibbs, Gary P.en
dc.contributor.authorFuller, Chris R.en
dc.contributor.departmentMechanical Engineeringen
dc.description.abstractModel reference active structural acoustic control is experimentally investigated in this study for physical systems characterized by stationary, narrow-band disturbances in which the acoustic field remains relatively unchanged. The filtered-x version of the multichannel adaptive least-mean-square (LMS) algorithm was implemented on a TMS320C25 digital signal processing board to achieve the desired control approach, and control inputs were generated with piezoelectric actuators. Model reference control provides the designer with a method of replacing acoustic error sensors such as microphones located in the far-field with error sensors such as accelerometers located on the surface of the structure. As opposed to driving the response of the structure to zero at the coordinates of the accelerometers, the response is driven to some predetermined ''reference'' value corresponding to the desired far-field acoustic directivity pattern. In essence, the uncontrolled structure is adaptively modified to behave like the reference structure under acoustic control conditions. Results from this study indicate that the same acoustic directivity pattern can be achieved with model reference control, and the only requirement is that the number of structural sensors used in the control approach is at least equal to the number of control actuators required to achieve the desired acoustic directivity pattern.en
dc.description.sponsorshipUnited States. Defense Advanced Research Projects Agencyen
dc.description.sponsorshipOffice of Naval Research - Grant ONR-N00014-88-K-0721en
dc.format.extent7 pagesen
dc.identifier.citationClark, R. L., Gibbs, G. P., & Fuller, C. R. (1993). An experimental study implementing model reference active structural acoustic control. Journal of the Acoustical Society of America, 93(6), 3258-3264. doi: 10.1121/1.405711en
dc.publisherAcoustical Society of Americaen
dc.rightsIn Copyrighten
dc.subjectAcoustic modelingen
dc.subjectAcoustic pattern recognitionen
dc.subjectAcoustic sensingen
dc.subjectProcess monitoring and controlen
dc.subjectStructural acousticsen
dc.titleAn experimental study implementing model reference active structural acoustic controlen
dc.title.serialJournal of the Acoustical Society of Americaen
dc.typeArticle - Refereeden


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