29036.一類線性切換系統(tǒng)狀態(tài)估計(jì)方法的研究

1、聲明本學(xué)位論文是我在導(dǎo)師的指導(dǎo)下取得的研究成果，盡我所知，在本學(xué)位論文中，除了加以標(biāo)注和致謝的部分外，不包含其他人已經(jīng)發(fā)表或公布過的研究成果，也不包含我為獲得任何教育機(jī)構(gòu)的學(xué)位或?qū)W歷而使用過的材料。與我一同工作的同事對本學(xué)位論文做出的貢獻(xiàn)均已在論文中作了明確的說明。多孵3月27目學(xué)位論文使用授權(quán)聲明南京理工大學(xué)有權(quán)保存本學(xué)位論文的電子和紙質(zhì)文檔，可以借閱或上網(wǎng)公布本學(xué)位論文的部分或全部內(nèi)容，可以向有關(guān)部門或機(jī)構(gòu)送交并授權(quán)其保存、借閱或上

2、網(wǎng)公布本學(xué)位論文的部分或全部內(nèi)容。對于保密論文，按保密的有關(guān)規(guī)定和程序處理。艫3月27日碩士論文一類線性切換系統(tǒng)狀態(tài)估計(jì)方法的研究AbstractAsaclassofimportanthybridsystem，switchedsystemhasattractedmoreandmoreattentionsNowstateestimationofswitchedsystemisthekeyresearchpointintheliteratu

3、reUndercurrentconditions，ontheonehand，becauseofthetechnologyandeconomyconstraints，thedimensionofthesystemoutputvectorisalwayslessthanthedimensionofsystemsstate，whichmakessystemmeasurementinformationincompleteOntheotherha

4、nd，thecontrolofthesystem，systemmodelingandidentification，etc，needtoestimatetheunknownsystemstateTherefore，stateestimationofswitchedsystemisstudiedinthisdissertation，andthemaincontentsareasfollows：Withtheunknownswitchingt

5、imes，unknownactivesubsystemateverymomentandthefullrankofstatematrixdifferencebetweenthesubsystemsofswitchedsystems，thestateestimationinthisdissertationhasextensivelystudiedandimprovedfortheautonomousswitchedsystemsusingA

6、LIENalgebraicapproximation，whichimprovesestimationaccuracyandreducesthecomplexityofestimation。Firstofall，withswitchingtimesunknown，theimpulsivemodelisintroducedByusingthepropertiesofsmoothfimctionandconvolution，unknownin

7、itialvalueandthedifferenceeffectofthesystemwillbeeliminatedThealgebraicexpressionofswitchingtimesisobtmnedThen，onthebasisofthisresult，activatedsubsystematthemomentisdeducedTheexistingapproachsareavailableforthecurrentact

8、ivesubsystemstateestimationFinally，throughanumericalexample，theproposedmethodwhichhasestimationaccuracyandeffciencywastestedandverifiedbyMatlabsimulationOnthebasisofresearchresultsforswitchedsystemwithtwosubsystems，thenu

9、mberofobserversWasdeducedforswitchedsystemwithmulti—subsystemsThisdissertationstudiesanddesignsstateestimationapproachforthesesystemsFirstofall，byusingtheALLENmethod，thealgebraicexpressionofswitchingtimeswhichcontainsonl

10、ytheknownormeasuredsignalsisobtainedunderthemultipleparallelobservationsThen，basedonthese，theeffectiveapproachofmulti—subsystemsstateestimationisproposedforlinearswitchedsystemsLastly，throughanumericalexample，theproposed

11、stateestimationmethodwasverifiedbyMatlabsimulationprogramIthashighspeed，lowcost，highprecisionadvantagesForthenonfullrankofthestatematrixdifferencebetweenthesubsystemsofsystemswiththeunknowndynamicperformanceofthesubsyste