Broadband control of plate radiation using a piezoelectric, double-amplifier active-skin and structural acoustic sensing

dc.contributorVirginia Tech. Department of Mechanical Engineering. Vibration and Acoustics Laboratoriesen
dc.contributor.authorJohnson, Brody D.en
dc.contributor.authorFuller, Chris R.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessed2015-05-12en
dc.date.accessioned2015-05-27T19:50:21Zen
dc.date.available2015-05-27T19:50:21Zen
dc.date.issued2000-02-01en
dc.description.abstractThe potential of a piezoelectric, double-amplifier active-skin with structural acoustic sensing (SAS) is demonstrated for the reduction of broadband acoustic radiation from a clamped, aluminum plate. The active-skin is a continuous covering of the vibrating portions of the plate with active, independently controllable piezoelectric, double-amplifier elements and is designed to affect control by altering the continuous structural radiation impedance rather than structural vibration. In simulation, acoustic models are sought for the primary and secondary sources that incorporate finite element methods. Simulation indicates that a total radiated power attenuation in excess of 10 dB may be achieved between 250 and 750 Hz with microphone error sensing, while under SAS the radiated power is reduced by nearly 8 dB in the same frequency range. In experiment, the adaptive feed forward filtered-x LMS (least mean square) algorithm, implemented on a Texas Instruments C40 DSP, was used in conjunction with the 6I6O control system. With microphone error sensing, 11.8-dB attenuation was achieved in the overall radiated power between 175 and 600 Hz. while inclusion of SAS resulted in a 7.3-dB overall power reduction in this frequency band.en
dc.description.sponsorshipUnited States. Office of Naval Research - Grant No. N00014-94-1-1140en
dc.format.extent9 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationJohnson, B. D. & Fuller, C. R. (2000). Broadband control of plate radiation using a piezoelectric, double-amplifier active-skin and structural acoustic sensing. Journal of the Acoustical Society of America, 107(2), 876-884. doi: 10.1121/1.428361en
dc.identifier.doihttps://doi.org/10.1121/1.428361en
dc.identifier.issn0001-4966en
dc.identifier.urihttp://hdl.handle.net/10919/52670en
dc.identifier.urlhttp://scitation.aip.org/content/asa/journal/jasa/107/2/10.1121/1.428361en
dc.language.isoen_USen
dc.publisherAcoustical Society of Americaen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectRadiation monitoringen
dc.subjectMicrophonesen
dc.subjectPiezoelectricityen
dc.subjectStructural acousticsen
dc.subjectAcoustic modelingen
dc.titleBroadband control of plate radiation using a piezoelectric, double-amplifier active-skin and structural acoustic sensingen
dc.title.serialJournal of the Acoustical Society of Americaen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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