简介：Inthispaper,twoirreversibleexothermicautocatalyticreactionswhichcarryoutincontinuousstirredtankreactor（CSTR）areconsidered.Adifferential-algebraicsystemisappliedtomodelthesechemicalreactions.Thestabilityandthedynamicbehaviorarestudiedforthedifferential-algebraicsystem.TheHopfbifurcationappearswhentheparameterexceedsacriticalvalue.Inordertoeliminatethiscomplexbehavior,thedifferential-algebraicsystemisdescribedbyasingle-inputandsingle-outputsystemwithparametervaryingwithindefiniteintervals,andthenvariablestructurecontrolwithslidingmodebasedonaspecialpowerreachinglawisdesignedtostabilizethischemicalsystem.Numericalsimulationsaregiventoillustratetheeffectivenessofthemethod.

简介：Thispaperproposesanovelideathatclassifiesfaultsintotwodifferentkinds:seriousfaultsandsmallfaults,andtreatsthemwithdifferentstrategiesrespectively.Akindofartificialneuralnetwork(ANN)isproposedfordetectingseriousfaults,andvariablestructure(VS)model-followingcontrolisconstructedforaccommodatingsmallfaults.Theproposedframeworktakesbothadvantagesofqualitativewayandquantitativewayoffaultdetectionandaccommodation.Moreover,theuncertaintycaseisinvestigatedandtheVScontrollerismodified.Simulationresultsofaremotelypilotedaircraftwithcontrolactuatorfailuresillustratetheperformanceofthedevelopedalgorithm.

简介：Adaptivefilteringalgorithmsareinvestigatedwhensystemmodelsaresubjecttomodelstructureerrorsandregressorsignalperturbations.Systemmodelsforpracticalapplicationsareoftenapproximationsofhigh-orderornonlinearsystems,introducingmodelstructureuncertainties.Measurementandactuationerrorscausesignalperturbations,whichinturnleadtouncertaintiesinregressorsofadaptivefilteringalgorithms.Employingordinarydifferentialequation(ODE)methodologies,weshowthatconvergencepropertiesandestimationbiascanbecharacterizedbycertaindifferentialinclusions.Conditionstoensurealgorithmconvergenceandboundsonestimationbiasarederived.Thesefindingsyieldbetterunderstandingoftherobustnessofadaptivealgorithmsagainststructuralandsignaluncertainties.

简介：包含最佳的控制理论的一条随机的滑动模式变量结构指导法律为导弹目标被介绍拦截模型在哪个说噪音，不明确的系统参数，目标运动和测量噪音被考虑。这条指导法律综合有line-of-sight的最佳的指导法律的优点与强壮的坚韧性评估集中和滑动模式指导法律。通过理论上的分析，滑动模式hyperplane是在关上的环系统的亚achievable，这被证明。数字结果显示出建议控制算法的有效性。

简介：Thispaperdealswiththevectorcontrol,includingboththedirectvectorcontrol(DVC)andtheindirectvectorcontrol(IdVC),ofinductionmotors.ItiswellknownthattheestimationofrotorfluxplaysafundamentalroleintheDVCandtheestimationofrotorresistanceisvitalintheslipcompensationoftheIdVC.Intheseestimations,theprecisionissignificantlyaffectedbythemotorresistances.Therefore,onlineestimationofmotorresistancesisindispensableinpractice.Forafastestimationofmotorresistances,itisnecessarytoslowdowntheconvergencerateofthecurrentestimate.Ontheotherhand,forafastestimationoftherotorflux,itisnecessarytospeedupitsconvergencerate.Itisverydifficulttorealizesuchatrade-offinconvergenceratesinafullorderobserver.Inthispaper,weproposetodecouplethecurrentobserverfromthefluxobserversoastorealizeindependentconvergencerates.Then,theresistanceestimationalgorithmisappliedtobothDVCandIdVC.Inparticular,intheapplicationtoIdVCthefluxobserverneedsnotbeused,whichleadstoasimplerstructure.Meanwhile,independentconvergenceratesofcurrentobserverandfluxobserveryieldanimprovedperformance.Asuperiorperformanceinthetorqueandfluxresponsesinbothcasesisverifiedbynumeroussimulations.

简介：H-infinifty可变结构控制被介绍因为单个Markov与错配的围住标准的不确定性交换了系统；错配的围住标准的外部骚乱。给定的切换的表面上的滑动模式动力学是常规的，这被显示出，没有推动，；随机的联盟者马厩；满足H无穷性能。一个可变结构控制器被设计保证系统轨道在一些有限时间收敛到线性切换表面。最后，一个数字例子被解决显示出有效性；理论结果的正当。