一类线性不确定时滞系统的鲁棒镇定方法分析

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1、STUDYoNRoBUSTSTABILIZATIONFoRACLASSOFLINEARUNCER置AINTIMEDELAYSYSTEMSABSTRACTTimedelayisretardofsignaltransmission．Timedelaycallbefoundinvariousengineeringsystemssuchaschemicalproces辩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玑theycallinducedeteriorationofsystemqualityeveninstability．Itrequiredthatourdynamicsystempossessrobustquality,whichkeepsintrinsicqualityonconditionthatthereexistsuncertainfactor．Theuncertaintyandexternaldisturbanceareregardedasperturb

6、ationinmathematics．Consequently,studyOilstabilityandcontrolfortimedelaysystemswhichincludedisturbancehasimportanttheoreticalsignificanceandpracticalvalue．Robuststabilityandrobuststabilizatiunforaclassoflinearuncer协intimedelaysystemsarestudiedinthispaper，itisdivide

7、dintofiveparts．1．Firstly,thebackgroundanddevelopmentofrobustcontrolforaclassoflinearuncertaintimedelaysystemsareproposed．2．Theoreticbasicneededsuchaslemma,definition，conceptionaregiven．3．Theproblemofrobuststabilizationforlinearuncertaintime—delaysystems诵t11第一章线性不确

8、定时滞系统普棒控制的发展概况7nonlinearperturbationisproposed．BasedonLyapunovstabilitytheory,robustcontrollerisgivenbyanalyzingthestabilityofclosed-loopsystem．Thesuffi