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简介：我们介绍预兆的控制理论进混乱控制的学习并且求婚一。指导基于一个神经网络模型优化预兆的控制算法。Theproposed控制系统在一个未知混乱系统稳定混乱运动到需要的目标轨道上。与存在相比类似的算法，建议控制系统有更快的反应，它因此为混乱系统的稳定要求短得多的时间。Theproposed途径能控制亢奋的混乱，算法简单。控制算法和控制系统的稳定性的集中能被保证。理论上的分析和模拟表明算法的有效性。

简介：Ahybridmethodologyisproposedforuseinlowpower,safetycriticalwirelesssensornetworkapplications,wherequality-of-serviceorientatedtransceiveroutputpowercontrolisrequiredtooperateinparallelwithradiofrequency-basedlocalization.Thepracticalimplementationisframedinanexperimentalproceduredesignedtotrackamovingagentinarealisticindoorenvironment.Anadaptivetimesynchronizedapproachisemployedtoensurethepositioningtechniquecanoperateeffectivelyinthepres...

简介：ThisworkisaimedtorigorouslymanagevoltagesaturationandmaximumcurrentconstraintsinShuntActiveFilters.Inthisrespect,assuming'unconstrained'controlalgorithmshavealreadybeendefinedtoachievestandardobjectivesforsuchdevices(i.e.currenttrackingforharmoniccompensationandDC-busvoltageboundness),aplug-inunit,orientedtoextendthesystemoperatingregionandatthesametimepreservinggoodperformanceunderlargetransientsandoverloadconditions,ispresented.Thissolutionallowstoimproveavailability,robustnessandcomposabilityofShuntActiveFilters,whichareexpectedtobekeyfeaturesinpresentandnextgenerationcomplexandpossibly'smart'powergrids.Theproposedunitiscomposedbytwoparts.First,asuitableanti-windupstrategyisdefinedinordertodealwithcontrolinputsaturation.Itsmainpurposeistopreservetheoriginal'unconstrainederrordynamics',infaceofinputsaturation,whileguaranteeinglowcomputationalburdenandreducedperformanceimpairment(thelattergoal,inharmoniccompensationcontext,leadstorathernon-standardproblemformulation).Tothisaim,theanti-windupactsonthecurrentreferencesthroughasuitably-designedadditionaldynamics.Then,inordertocopewithcurrentlimitations,anadditionalstrategyhasbeendesigned;againthecurrentreferencesissuitablyshapedtocomplywiththefeaturesandboundsofthesystem,augmentedwiththeabove-mentionedanti-windupsolution.TheproposedschemecanbesimplyjoinedtoanykindofunconstrainedcontrolleradoptedtosteerShuntActiveFilters.Inthiswork,anInternal-Model-basedcurrentcontrollerisadoptedasabenchmarkcase.Theproposedapproachisvalidatethroughextensivesimulationtests.

简介：In4-strokeinternalcombustionengines,air-fuelratiocontrolisachallengingtaskduetotherapidchangesofenginethrottle,especiallyduringtransientoperation.Toimprovethetransientperformance,managingthecycle-to-cycletransientbehaviorofthemassoftheair,thefuelandtheburntgasisakeyissueduetotheimbalanceofcycliccombustionprocess.Thispaperaddressthemodel-basedestimationandcontrolproblemforcyclicair-fuelratioofspark-ignitionengines.Adiscrete-timemodelofair-fuelratioisproposed,whichrepresentsthecycle-to-cycletransientbehaviorofin-cylinderstatevariablesundertheassumptionsofcyclicmeasurabilityofthetotalin-cylinderchargemass,combustionefficiencyandtheresidualgasfraction.Withthemodel,aKalmanfilter-basedair-fuelratioestimationalgorithmisproposedthatenableustoperformafeedbackcontrolofair-fuelratiowithoutusinglambdasensor.Finally,experimentalvalidationresultisdemonstratedtoshowtheeffectivenessofproposedestimationandcontrolschemethatisconductedonafull-scaledgasolineenginetestbench.

简介：ThreesynchrotronradiationbeamlineshavebeenbuiltonDAΦNE,theFrascatielectron-positronaccelerator.ItisPossibletomonitorandcontrolalltheelementsonthebeamlinesusingamodularnetworkdistributedI/OsystembyNationalInstrunments(FieldPoint)withBridgeVIEW/LabVIEWprograms,Twoofthesebeamlineshaveradiationsafetyproblemssolvedbytwoindependentandredundantsystems,usingmechanicalswitches,andS7-200PLC'sbySiemens.Inthisarticleoursolutionwillbedescribedindetails.

简介：ThispaperisconcernedwithanoptimalcontrolproblemofanablationtranspirationcoolingcontrolsystemwithStefan-Signoriniboundarycondition.Theexistenceofweaksolutionofthesystemisconsidered.TheDubovitskiiandMilyutinapproachisadoptedintheinvestigationofthePontryagin'smaximumprincipleofthesystem.Theoptimalitynecessaryconditionispresentedfortheproblemwithfixedfinalhorizonandphaseconstraints.

简介：稳定性和机械系统的围住的海角是重要研究话题之一。在这糊一个干燥磨擦振荡器的最终的围住的海角，属于非光滑的机械系统，被建议一个控制器设计方法调查。第一，为有推迟的州的反馈的名字的系统的稳定性的一个足够的条件被构造LyapunovKrasovskii功能导出。推迟的反馈获得矩阵被使用线性矩阵不平等方法计算。第二根据推迟的州的反馈，一个连续函数被Lyapunov重新设计设计保证磨擦振荡器系统的解决方案最终在全面控制下面被围住。而且，最终的界限能被选择适当参数在实践调整。因此导致磨擦的颤动或不稳定性能有效地被控制。数字结果证明建议方法是有效的。

简介：Inthispaper,acryosurgery-hyperthermiasystemisproposedfortakingadvantageofthealternatedcoolingandheatingtreatmentintumor.Anovelcontrolsystemisproposedtoensurethatthethermalsystemworkseffectively.Firstly,thetissuetemperaturearoundtheprobeisregulatedandkeptinadesiredrangewhenradiofrequencyablationisoperated.Secondly,precisecontroloftemperatureisachievedinhyperthermiatreatmentusingfuzzylogicPIDtypecontroller.Theresultsofexvivoliverexperimentdemonstratethatthissystemcouldprovidearathergoodperformancewiththeproposedcontrolmethod.

简介：Inthispaper,weconsiderthepartialdifferentialequationofanelasticbeamwithstructuraldampingbyboundaryfeedbackcontrol.First,weprovethisclosedsystemiswell--posed;thenweestablishtbeexponentialstabilityforthiselasticsystembyusingatheoremwhichbelongstoF.L.Huang;finally,wediscussthedistributionandmultiplicityofthespectrumofthissystem.Theseresultsareveryimportantandusefulinpracticalapplications.

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简介：由混乱节点组成的各种各样的典型复杂动态网络的稳定性质理论上被调查；数字地详细模仿了。如此的卡住的网络的一些本地稳定性性质被导出；有效稳定性区域基于特征值分析被估计。网络被给解释不太本地的控制器为什么显著地被明确地卡住需要的这的数字模拟策划，它在没有规模的网络卡住最高度连接的节点，与由随机卡住要求了比计划。另外，为什么为控制随机图的网络的二个计划之间没有重要差别，被解释；小世界的网络。

简介：WeproposeaBPNNbasedadaptiveslidingmodecontrolschemeforspeedtrackingofaDCmotorwithunknownsystemnonlinearities.Theinput-outputlinearizationtechniqueisusedtocancelthenonlinearities,andoutputoftheBPNNisincorporatedintothecontrollerintheproposedscheme.ItisshownthattherotorspeedofaDCmotorcanfollowanyarbitrarilyselectedtrajectoriesundervariableloadtorque.Thentheapplicationoftheapproachistestedviacomesimulations.

简介：Thispaperaddressestherandomtime-delaysandpacketlossesissuesofnetworkedcontrolsystems(NCS)withintheframeworkofjumplinearsystemswithmode-dependenttime-delays.Anewdelay-dependentconditiononthestochasticstabilityisproposedbyanewstochasticLyapunov-Krasovskiifunctional.Theconditionisformulatedasasetofcoupledlinearmatrixinequalities(LMIs).Asanexampletoverifytheproposedmethod,aninverted-pendulumsystemwithnetworkisconsidered.Thesimulationresultsdemonstratetheeffectivenessofthemethod.

简介：TheFilteringGridScale(FGS)ofsub-gridscalemodelsdoesnotmatchwiththetheoreticalProperFGS(PFGS)becauseoftheimpropermesh.Therefore,properLargeEddySimulation(LES)Meshisverydecisiveforbetterresultsandmoreeconomicalcost.Inthiswork,thepurposeistoprovideanadaptivecontrolstrategyforproperLESmeshwithturbulencetheoryandCFDmethods.AnewexpressionofPFGSisproposedonthebasisof-5/3lawofinertialsub-rangeandthepropermeshofLEScanbebuiltdirectlyfromtheadjustmentofRANSmesh.Abenchmarkofthebackwardfacingstepflowatisprovidedforapplicationandverification.Therearethreekindsofmeshsizes,includingtheRANSmesh,LAM(LESofadaptive-controlmesh),LFM(LESoffinemesh),employedhere.ThegridnumberofLAMissmallerthanthoseofLFMevidently,andtheresultsofLAMareinagoodagreementwiththoseofDNSandexperiments.ItisrevealedthattheresultsofLAMareveryclosetothoseofLFM.Theconclusionsprovidepositiveevidencesforthenovelstrategy.

简介：ThispaperpresentsasimpleandrobustspeedcontrolschemeofPermanentMagnetSynchronousMotor(PMSM).Itistoachieveaccuratecontrolpeffommancemthepresenceofloadtorqueandplantparametervariation.Arobustdisturbancecancellationfeedforwardcontrollerisusedtoestimatethetorquedisturbance.ThesimpleandpracticalcontrolschemeiseasilyimplementedonaPMSMdriverusingaTMS320LF2407DSP.Theeffectivenessoftheproposedrobustspeedcontrolapproachisdemonstratedbysimulationandexperimentalresults.

简介：Inthispaper,theauthorsanalyzethestabilityofaclassofinterconnectedsystemswithsubsystemunmodeleddynamicsanddynamicinteractionsemployingdecentralizedadaptivecontrollersdesignedbyWen,Zhou,andWang(2008)inthepresenceofactuatorfailures.Itwillbeshownthattheglobalstabilityoftheremainingclosed-loopsystemisstillensuredandtheoutputsarealsoregulatedtozerowhensomesubsystemsbreakdown.

简介：Reactioncontrolsystem(RCS)isapowerfulandefficientactuatorforspacevehiclesattitudecontrol,whichistypicallycharacterizedasapulsedunilateraleffectoronlywithtwostates(off/on).Alongwithinevitableinternaluncertaintiesandexternaldisturbancesinpractice,thisinherentnonlinearcharacteralwayshindersspacevehiclesautopilotfrompursuingprecisetrackingperformance.Comparedtomostofpre-existingmethodologiesthatpassivelysuppresstheuncertaintiesanddisturbances,adesignbasedonpredictivefunctionalcontrol(PFC)andgeneralizedextendedstateobserver(GESO)isfirstlyproposedforthree-axisRCScontrolsystemtoactivelyrejectthatwithnorequirementforadditionalfuelconsumption.ToobtainahighfidelitypredictivemodelonwhichtheperformanceofPFCgreatlydepends,thenonlinearcouplingmultiple-inputmultiple-output(MIMO)flightdynamicsmodelisparameterizedasastate-dependentcoefficientform.Andbasedonthat,aMIMOPFCalgorithminstatespacedomainforaplantofarbitraryordersisdeducedinthispaper.Theinternaluncertaintiesandexternaldisturbancesarelumpedasatotaldisturbance,whichisestimatedandcancelledtimelytofurtherenhancetherobustness.Thecontinuouscontrolcommandsynthesisedbyabovecontroller-rejectortandemisfinallymodulatedbypulsewidthpulsefrequencymodulator(PWPF)toon-offsignalstomeetRCSrequirement.Therobustnessandfeasibilityoftheproposeddesignarevalidatedbyaseriesofperformancecomparisonsimulationswithsomeprominentmethodsinthepresenceofsignificantperturbationsanddisturbances,aswellasmeasurementnoise.

简介：发电厂是非线性、不明确的复杂系统。过热的蒸气温度的可靠控制是必要的在现代发电厂的操作保证高效率和高负担追随者能力。一个非线性的概括预兆的控制器在这篇论文基于neuro模糊的网络(NFGPC)被建议。建议非线性的控制器被使用控制一个200MW发电厂的过热的蒸气温度。从植物和植物的模拟的实验，好一些的性能比传统的控制器被获得。关键词Neuro模糊的网络-概括预兆的控制-过热的蒸气温度这个工作被北京(号码4062030)的自然科学基础支持，中国的国家自然科学基础(号码50576022，69804003)，科学研究教育(KM200611232007)的北京市政的委员会的普通节目。刘祥杰从自动化的研究中心在电、电子的工程收到了博士度，在1997的东北大学。他随后在电力研究院(EPRI)保持了博士后的节目，中国北京，直到1999。自从1999，他是在EPRI的一个副教授。他是香港的大学里的一个研究伙伴，墨西哥的国家大学里的一个教授。他现在是在自动化的部门的一个教授，诺思中国电力大学。他的当前的研究区域包括：在DCS的工业过程，开发和申请的模糊控制，神经网络，适应控制，聪明的控制理论和它的应用程序。刘博士是在第14IFAC世界大会的鈥渁p折襞价格鈥?的一个候选人。刘继珍在1982在中国从诺思中国电力大学(NCEPU)收到了硕士度。他当前是NCEPU的总裁，为电力工程的中国社会的主要委员会成员，自动化的中国协会的一个委员会成员。他的当前的研究区域包括：在热过程和力量砰GUAN的监督信息系统的优化技术从自动控制的部门收到了博士，在2004的北京工学院。她当前是在自动化的部门的副教授，机械的北京研究所。她的当前的研究区域包括：在太空的神经原模糊的网络，适应控制，聪明的控制理论和它的应用程序。