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时变时滞不确定系统基于观测器的鲁棒控制器设计.docx

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时变时滞不确定系统基于观测器的鲁棒控制器设计 Title:RobustControllerDesignforTime-varyingTime-delayUncertainSystemsbasedonObservers Abstract: Thecontroloftime-varyingtime-delayuncertainsystemsposesasignificantchallengeduetothepresenceofuncertainties,time-varyingdynamics,andtimedelays.Thispaperproposesarobustcontrollerdesignapproachbasedonobserverstoaddressthisissue.Theproposedmethodaimstoachievestableandreliablecontrolperformancedespitethepresenceofsystemuncertaintiesanddelays.Thepaperprovidesadetaileddescriptionofthecontrollerdesignmethodologyandpresentssimulationresultstoillustratetheeffectivenessoftheproposedapproach. Introduction: Time-varyingtime-delayuncertainsystemsareprevalentinvariousengineeringdisciplines,suchasaerospace,chemicalprocesses,andelectricalpowersystems.Thesesystemsexhibittime-varyingdynamicsanduncertainties,whichcanleadtodegradedcontrolperformanceandinstability.Moreover,timedelaysinthesystemcanfurthercomplicatethecontroldesignduetothepossibilityofinstabilityandpoortransientresponses.Inordertoaddressthesechallenges,robustcontroltechniqueshavebeenwidelystudiedandutilized.Amongthem,observer-basedcontrolstrategieshaveshownpromisingresultsindealingwithuncertainties,time-varyingdynamics,andtimedelays. ControllerDesignMethodology: Theproposedrobustcontrollerdesignapproachconsistsoftwomaincomponents:observerdesignandcontrollersynthesis.Theobserverisdesignedtoestimatethestatesofthesystembasedonavailablemeasurements.Theestimatedstatesarethenusedtoconstructarobustcontrollerthatensuresstabilityanddesiredcontrolperformance. 1.ObserverDesign: Theobserverisdesignedtoestimatetheunknownstatesofthesystem.Inthepresenceofuncertaintiesandtime-varyingdynamics,itiscrucialtohaveanaccurateestimationofthestatesforreliablecontrol.Differentobserverarchitecturescanbeemployed,suchastheLuenbergerobserverortheextendedKalmanfilter.Thepaperdiscussestheselectionanddesignofanappropriateobserverstructurebasedonthesystemcharacteristicsandrequirements. 2.ControllerSynthesis: Theestimatedstatesobtainedfrom