简介:Thispaperdealswiththeproblemofrobuststabilityforcontinuous-timesingularsystemswithstatedelayandparameteruncertainty.Theuncertainsingularsystemswithdelayconsideredinthispaperareassumedtoberegularandimpulsefree.Bydecomposingthesystemsintoslowandfastsubsystems,arobustdelay-dependentasymptoticstabilitycriteriabasedonlinearmatrixinequalityisproposed,whichisderivedbyusingLyapunov-Krasovskiifunctionals,neithermodeltransformationnorboundingforcrosstermsisrequiredinthederivationofourdelay-dependentresult.Therobustdelay-dependentstabilitycriterionproposedinthispaperisasufficientcondition.Finally,numericalexamplesandMatlabsimulationareprovidedtoillustratetheeffectivenessoftheproposedmethod.
简介:WeinvestigatetheexponentialstabilityinthemeansquaresenseforthesystemswithMarkovianswitchingandimpulseeffects.BasedonthestatisticpropertyoftheMarkovprocess,astabilitycriterionisestablished.Then,bytheparameterizationsviaafamilyofauxiliarymatrices,thedynamicaloutputfeedbackcontrollercanbesolvedviaanLMIapproach,whichmakestheclosed-loopsystemexponentiallystable.Anumericalexampleisgiventodemonstratethemethod.
简介:Amethodofenhancingpowersystemstabilityforasinglemachinetoinfinitebuspowersystemispresented.ThetechniqueusedcompromisestheeffectivenessofProportional-Integral-Derivativecontroller(PID).Inordertosatisfythedampingcharacteristicsfortheproposedpowersystemoverawiderangeofoperatinginterval,rotationalspeed,torqueangleandterminalvoltagesignalsofthesynchronousmachineareutilizedascontrolsignalsofthesystem.Itiswellknownthatthesevariableshavesignificanteffectsondampingthegeneratorsshaftmechanicaloscillations,it'llbesoeasytovalidatethemostsuitablecontrollerasseenfromthesimulationresults.
简介:在这篇论文,稳定性和骚乱变细在效果被考虑的不明确的存取延期和包退学学生下面为联网的控制系统(NCS)的一个类发出。我们的目的是在延期和包退学学生率,系统稳定性和H_∞骚乱变细性质在下面被保存到需要的水平上发现条件。在这篇论文的Thebasic想法是提出象一个分离时间的交换系统的如此的联网的控制系统。然后NCS“稳定性和表演问题能为交换系统被归结为相应问题,它被学习十年了并且为很多结果在文学为哪个是可得到的。在这篇论文的技术在thediscrete时间基于最近的进步交换系统和片明智的Lyapunov函数。
简介:Newdelay-independentanddehy-dependentstabilitycriteriaforlinearsystemswithmultipletime-varyingdelaysareestablishedbyusingthetime-domainmethod.Theresultsarederivedbasedonanew-typestabilitytheoremforgeneralretardeddynamicalsystemsandnewanalysistechniquesdevelopedintheauthor'spreviouswork.Unlikesomeresultsintheliterature,alloftheestablishedresultsdonotdependonthederivativeoftime-varyingdelays.Therefore,theyaresuitableforthecasewithveryfasttime-varyingdelays.Inaddition,someremarksarealsogiventoexphintheobtainedresultsandtopointoutthelimitationsofthepreviousresultsintheliterature.
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简介:Thispaperaddressestherandomtime-delaysandpacketlossesissuesofnetworkedcontrolsystems(NCS)withintheframeworkofjumplinearsystemswithmode-dependenttime-delays.Anewdelay-dependentconditiononthestochasticstabilityisproposedbyanewstochasticLyapunov-Krasovskiifunctional.Theconditionisformulatedasasetofcoupledlinearmatrixinequalities(LMIs).Asanexampletoverifytheproposedmethod,aninverted-pendulumsystemwithnetworkisconsidered.Thesimulationresultsdemonstratetheeffectivenessofthemethod.
简介:Westudiedtheconjunctionpracticalstabilityandcontrollabilityoflarge-scaleimpulsivecontrolsystemsbyusingthecomparisonsystemsandvectorLyapunovfunctions.Thenthelessconservativesufficientconditionsforconjunctionpracticalstabilityandcontrollabilityoflarge-scaleimpulsivecontrolsystemwereobtained.
简介:OFEX(最佳、充分明确)率控制器能提供不仅最佳的带宽分配而且充分明确的拥挤信号给来源。它行使连接明智的比例的公平和网络明智的max-min公平,它使控制器能从最拥挤的连接喂拥挤信号背,而不是使用喂拥挤信号回来的比例的公平沿着一条流动路径加了的networkwise。作为结果,OFEX控制器克服相对明确的控制器的缺点1)以他们送率和集中速度的来源偏导瓶颈得多的用户,2)不对改变连接带宽能适应并且3)能潜在地在拥挤之上招致大队列尺寸。在这份报纸,我们首先证明OFEX控制器能收敛到它在一个连接至少象一个几何系列一样快的平衡。然后,我们在一个单个瓶颈网络与时间延期分析系统稳定性并且证明OFEX控制器能在某些条件下面完成本地稳定性。而且,OFEX控制器的坚韧性分析显示出连接带宽的动力学怎么可以影响一个连接的收入。与OPNETmodeler,最后,我们评估OFEX控制器的表演并且验证它的有效性。
简介:ThispaperdealswiththeproblemoftheabsolutestabilityforgeneralneutraltypeLurieindirectcontrolsystemsbyLyapunovmethodandlinearmatrixinequality(LMI)technique.Delay-dependentsufficientconditionsfortheabsolutestabilityarederivedandexpressedasthefeasibilityproblemofLMI,whichcanbeeasilysolvedbyMatlabToolbox.Finally,someexamplesareprovidetodemonstratetheeffectivenessofproposedmethod.
简介:Theaimofthispaperistostudythepracticalф0-stabilityinprobability(Pф0SiP)andpracticalф0-stabilityinpthmean(Pф0SpM)ofswitchedstochasticnonlinearsystems.Sufficientconditionsonsuchpracticalpropertiesareobtainedbyusingthecomparisonprincipleandthecone-valuedLyapunovfunctionmethods.Also,basedonanextendedcomparisonprinciple,aperturbationtheoryofswitchedstochasticsystemsisgiven.
简介:Theproblemofdelay-dependentrobuststabilityforsystemswithtitne-varyingdelayhasbeenconsidered.ByusingtheS-procedureandthePark'sinequalityintherecentissue,adelay-dependentrobuststabilitycriterionwhichislessconservativethanthepreviousresultshasbeenderivedfortime-delaysystemswithtime-varyingstructureduncertainties.Thesameideahasalsobeeneasilyextendedtothesystemswithnonlinearperturbations.Numericalexamplesillustratedtheeffectivenessandtheimprovementoftheproposedapproach.