Controllability and observability measures of structural vibration and acoustic radiation

(整期优先)网络出版时间:2016-03-13
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Thispaperstudiesthecontrollabilityandobservabilitymeasuresofstructuralvi?brationandacousticradiationandproposesameasureofmodalobservabilitybasedonacousticpressureoutputsandmeasuresofcontrollabilityandobservabilityofacousticradiationbycombiningthemeasuresofmodalcontrollabilityandobservabilityofvibrationmodeswithcorrespondingmodalacousticradiationefficiencies.Aplatewithcontrolforceinputsandvibrationalresponseoutputsandacousticpressureoutputsisinvolvedtoshowthemodalcontrollabilityandobservabilitymeasuresofvibrationmodesandmeasuresofcontrollabilityandobservabil?ityofstructuralvibrationandacousticradiation.Observabilitymeasuresbasedonvibrationalresponseoutputsandacousticpressureoutputsarecomparedandtheemphasisisonthemea?suresbasedontheacousticpressureoutputs.Finallytheapplicationandusefulnessofthecontrollabilityandobservabilitymeasurestoactivecontrolofstructuralvibrationandacous?ticradiationareillustratedandcompared.Itshowsthatthecontrollabilityandobservabilitymeasuresprovideusefulguidanceforactivecontroldesignespeciallyinoptimalactuatorandsensorplacement.