简介：Lowgainfeedbackreferstocertainfamiliesofstabilizingstatefeedbackgainsthatareparameterizedinascalarandgotozeroasthescalardecreasestozero.Lowgainfeedbackwasinitiallyproposedtoachievesemi-globalstabilizationoflinearsystemssubjecttoinputsaturation.Itwasthencombinedwithhighgainfeedbackindifferentwaysforsolvingvariouscontrolproblems.Theresultingfeedbacklawsarereferredtoaslow-and-highgainfeedback.Sincetheintroductionoflowgainfeedbackinthecontextofsemi-globalstabilizationoflinearsystemssubjecttoinputsaturation,therehasbeenefforttodevelopalternativemethodsforlowgaindesign,tocharacterizekeyfeaturesoflowgainfeedback,andtoexplorenewapplicationsofthelowgainandlow-and-highgainfeedback.Thispaperreviewsthedevelopmentsinlowgainandlow-and-highgainfeedbackdesigns.

简介：ThispaperinvestigatestherelationshipbetweenstatefeedbackandHamiltonicanrealization.Firest,itisprovedthatacompletelycontrollablelinearsystemalwayshasastatefeedbackstateequationHamiltonianrealization.NecessaryandsufficientconditionsareobtainedforittohaveaHamiltonianrealizationwithnaturaloutput.ThensomeconditionsforanaffinenonlinearsystemtohaveaHamiltonianrealizationaregiven.someconditionsforanaffinenonlinearsystemtohaveaHamiltonianrealizationaregiven.Forgeneralizedoutputs,theconditionsofthefeedback,keepingHamiltonian,arediscussed.Finally,theadmissiblefeedbackcontrolsforgeneralizedHamiltoniansystemsareconsidered.

简介：Inthispaper,supposingthatthereceivedsignalsattheinputareoftheformv（t）=s1[t,x1（t）]s2[t,x2（t）]+n（t）wheresiareFMsignals（i=1,2）,anovelcross-coupledphase-lockedloop（CCPLL（M））anditsmathematicalmodelareobtained.Theglobalqualitativestructuralanalysisofthemathematicalmodelofthefirst-orderloop,theacqui-sitionregionandsynchronizationregionofthefirst-orderloop,andthesynchronizationregionofthesecond-orderloopareobtained.

简介：ThispaperisconcernedwiththeanalysisofafeedbackM[X]/G/1retrialqueuewithstartingfailuresandgeneralretrialtimes.Inabatch,eachindividualcustomerissubjecttoacontroladmissionpolicyuponarrival.Iftheserverisidle,oneofthecustomersadmittedtothesystemmaystartitsserviceandtherestjoinstheretrialgroup,whereasalltheadmittedcustomersgototheretrialgroupwhentheserverisunavailableuponarrival.Anarrivingcustomer(primaryorretrial)mustturn-ontheserver,whichtakesnegligibletime.Iftheserverisstartedsuccessfully(withacertainprobability),thecustomergetsserviceimmediately.Otherwise,therepairfortheservercommencesimmediatelyandthecustomermustleavefortheorbitandmakearetrialatalatertime.ItisassumedthatthecustomerswhofindtheserverunavailablearequeuedintheorbitinaccordancewithanFCFSdisciplineandonlythecustomerattheheadofthequeueisallowedforaccesstotheserver.TheMarkovchainunderlyingtheconsideredqueueingsystemisstudiedandthenecessaryandsufficientconditionforthesystemtobestableispresented.Explicitformulaeforthestationarydistributionandsomeperformancemeasuresofthesysteminsteady-stateareobtained.Finally,somenumericalexamplesarepresentedtoillustratetheinfluenceoftheparametersonseveralperformancecharacteristics.

简介：Thispaperaddressesanonlinearfeedbackcontrolproblemforthechaoticarchmicro-electro-mechanicalsystemwithunknownparameters,immeasurablestatesandpartialstate-constraintsubjectedtothedistributedelectrostaticactuation.Toreflectinherentpropertiesanddesigncontroller,thephasediagrams,bifurcationdiagramandPoincaresectionarepresentedtoinvestigatethenonlineardynamics.TheauthorsemployasymmetricbarrierLyapunovfunctiontopreventviolationofconstraintwhenthearchmicro-electro-mechanicalsystemfacessomelimits.AnRBFneuralnetworksystemintegratingwithanupdatelawisadoptedtoestimateunknownfunctionwitharbitrarilysmallerror.Toeliminatechaoticoscillation,aneuro-adaptivebacksteppingcontrolschemefusedwithanextendedstatetrackingdifferentiatorandanobserverisconstructedtolowerrequirementsonmeasuredstatesandprecisesystemmodel.Besides,introducinganextendedstatetrackingdifferentiatoravoidsrepeatedderivativeforthevirtualcontrolsignalassociatedwithconventionalbackstepping.Finally,simulationresultsarepresentedtoillustratefeasibilityoftheproposedscheme.

简介：Inthispaper,theauthorsdesignboundaryfeedbackcontrollersattheinteriornodetostabilizeastar-shapednetworkofEuler-Bernoullibeams.Thebeamsarepinnedeachother,thatis,thedisplacementsofthestructurearecontinuousbuttherotationsofthebeamsarenotcontinuous.Thewell-posed-nessoftheclosedloopsystemisprovedbythesemigrouptheory.Theauthorsshowthatthesystemisasymptoticallystableiftheauthorsimposeabendingmomentcontroloneachedge.Finally,theauthorsderivetheexponentialstabilityofthesystem.

简介：这份报纸与一个不稳定的边界条件，观察在服从于任意的确定的时间延期集中于一个一个维的波浪方程的边界稳定。observability不平等显示开环的系统是看得见的，基于哪个观察员和预言者被设计：系统的状态与可得到的观察被估计然后没有观察，预言了。在那以后，相等地，作者由backstepping方法转变原来的系统到提出得好、指数地稳定的系统。和观察员和预言者的设计的相等的系统给估计的产量反馈。靠近环的系统是指数地稳定的，这被显示出。数字模拟被介绍说明稳定的控制器的效果。

简介：

简介：Thispaperstudiestheconsensusproblemofmulti-agentsystemsinwhichallagentsaremodeledbyagenerallinearsystem.Theauthorsconsiderthecasewhereonlytherelativeoutputfeedbackbetweentheneighboringagentscanbemeasured.Tosolvetheconsensusproblem,theauthorsfirstconstructastaticrelativeoutputfeedbackcontrolundersomemildconstraintsonthesystemmodel.Thentheauthorsuseanobserverbasedapproachtodesignadynamicrelativeoutputfeedbackcontrol.Iftheadjacentgraphofthesystemisundirectedandconnectedordirectedwithaspanningtree,withtheproposedcontrollaws,theconsensuscanbeachieved.Theauthorsnotethatwiththeobserverbasedapproach,someinformationexchangebetweentheagentsisneededunlesstheassociatedadjacentgraphiscompletelyconnected.

简介：这份报纸在一个三维的非线性的自治反馈控制系统涉及存在和限制周期的分析近似。基于三维的Hopf分叉定理，限制周期的存在首先被证明。然后，homotopy分析方法(火腿)被使用获得限制周期和它的频率的分析近似。在导出高顺序的近似，作者利用了在货车derPol方程为限制周期近似建议的一个不安过程的想法。由与数字集成答案作比较，在这份报纸获得的分析结果的精确性很高，这被显示出，甚至当限制周期的振幅大时。

简介：

简介：当起始的数据是小的时，这篇论文在2-dimensionalRiemannianmanifolds上与边界反馈认为半的全球光滑的解决方案的存在是线性schrödinger方程。作者证明全球答案的存在边界反馈取决于不仅，而且在一个Riemannian度量标准上，由原则部分和原来的度量标准的系数给歧管。特别地，authers证明系统的精力指数地腐烂。