基于聲輻射模態(tài)控制策略的主動結(jié)構(gòu)聲學(xué)控制研究.pdf

1、江蘇大學(xué)碩士學(xué)位論文基于聲輻射模態(tài)控制策略的主動結(jié)構(gòu)聲學(xué)控制研究姓名：王躍申請學(xué)位級別：碩士專業(yè)：動力機械及工程指導(dǎo)教師：姜哲20050605江蘇大學(xué)碩士學(xué)位論文ABSTRACTThetheoryofacousticradiationmodesisaeffectivemethodtoanalyzethebehaviorofsoundfieldcausedbythevibratingboayItispresentedradiationmo

2、desandradiationefficienciesusingrelationshipbetweensurfacenormalvelocffiesandsurfacesoundpressureofvibratingstructuresandgivesonedefinitionoftheweightcoefficientofsoundradiationRadiationmodesaredependentontheradiatorgeom

3、etrybutnotOilanymaterialcharacteristicoftheradiatoritselfRadiationmodesareorthogonaltooneanotherandthesoundpowerofeachradiationmodesiscompletelyindependentofoneanotherOneoftheimportantaspectsoftheradiationmodesistheirrad

4、iationefficienciesfalloffveryrapidly謝ththeincreaseofmodesoforderatlowfrequencies、Atpresent，controllingthetransferfunctionofthesystemandresearchingthecontrolstrategyaredominantinstudyingradiationmodesInthispaperthestateeq

5、uationofsimplysupposedrectangularpanelisestablishedbyusingthecontrolstrategythatiscancelingthefirstkradiationmodesTheequationCansatisfyMIMO(moreinmoreout)systemandthesystem、撕thdistributionintimedomainfrequencydomainandpl

6、ural—domainThenstabilitycontrollableandobservableofthesystemisdiscussedBasingontheoutcome，thesystemisstabilization，completelyoutputcontrollableandcompletelyobservableAtlastusingMatJabsoftwaretoconfirmtheavailabilityofthe