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1、STUDYoNRoBUSTSTABILIZATIONFoRACLASSOFLINEARUNCER置AINTIMEDELAYSYSTEMSABSTRACTTimedelayisretardofsignaltransmission．Timedelaycallbefoundinvariousengineeringsystemssuchaschemicalproces辯s，biologicalsystems，andeconomicsystems．Stabilityisofprimaryimportanceforasystem．Ot
2、herwise．船weallknow,firstly,theexistenceoftime-delayCallpmducealargenumberofeffectstothestabilityofthesystem,becausetheexistenceoftime-delaywillchangetheproperequationofthesystem．Asaresult，timedelaybecomesthemainfactortoleadtoinstabilityofthesystem．Consideringtheco
3、ntrolaccuracy,Weneed幻constructaccuratemathematicmodelinsteadofsimpledisposal．Therefore，thestudyoftimedelayisindispensableandpossessesgreatsignificance．Atthesametime，thedevelopmentofmodernnxtthematiCS，controltheoryandcomputertechnologyprovidepowerfultoolsforthestud
4、yofuncertaintimedelaysystems．However,inengineeringpractice，themodelofcontrolsystemsusuallycomprisesuncertainty．Becauseitisdimculttogetaccuratemathematicalmodelorthemodelisverycomplex，wehavetosimplifrorapproximateinanalysisanddesign．Inaddition，moreorlessthereexists
5、externaldisturbanceinthesystcr璣theycallinducedeteriorationofsystemqualityeveninstability．Itrequiredthatourdynamicsystempossessrobustquality,whichkeepsintrinsicqualityonconditionthatthereexistsuncertainfactor．Theuncertaintyandexternaldisturbanceareregardedasperturb
6、ationinmathematics．Consequently,studyOilstabilityandcontrolfortimedelaysystemswhichincludedisturbancehasimportanttheoreticalsignificanceandpracticalvalue．Robuststabilityandrobuststabilizatiunforaclassoflinearuncer協(xié)intimedelaysystemsarestudiedinthispaper，itisdivide
7、dintofiveparts．1．Firstly,thebackgroundanddevelopmentofrobustcontrolforaclassoflinearuncertaintimedelaysystemsareproposed．2．Theoreticbasicneededsuchaslemma,definition，conceptionaregiven．3．Theproblemofrobuststabilizationforlinearuncertaintime—delaysystems誦t11第一章線性不確
8、定時滯系統(tǒng)普棒控制的發(fā)展概況7nonlinearperturbationisproposed．BasedonLyapunovstabilitytheory,robustcontrollerisgivenbyanalyzingthestabilityofclosed-loopsystem．Thesuffi
