简介：Weconsideramathematicalmodelwhichdescribesacontactbetweenadeformablebodyandafoundation.ThecontactisbilateralandmodelledwithTresca’sfrictionlaw.Thegoalofthispaperistostudyanoptimalcontrolproblemwhichconsistsofleadingthestresstensorascloseaspossibletoagiventarget,byactingwithacontrolontheboundaryofthebody.Westateanoptimalcontrolproblemwhichadmitsatleastonesolution.Wealsointroducetheregularizedcontrolproblemforwhichwestudytheconvergencewhentheregularizationparametertendstozero.Finally,anoptimallyconditionisestablishedforthisproblem.

简介：在最近的年里，microchannel热exchangers在技术区域的一个大变化被使用了。这些问题之一，它在microchannel技术存在是流动不稳定性，包括在为在特别的二阶段的流动的盒子的microchannels数组的液体maldistribution微蒸发器。解决这个问题的方法之一是在microchannel入口的流动率控制。然而，由于到microchannels的数组的很小的入口经典流动限制设备(与动人的机械部分)将困难适用。为流动率控制的新设备在论文基于dielectrophoresis力量被介绍。为致冷的流动控制使用这台设备的试验性的研究结果在论文被介绍。在应用电压和频率和流动率之间的试验性地获得的关系被介绍为为refrigerants和另外的不稳定的液体使用如此的方法显示出机会。

简介：这份报纸为机器人考虑转矩控制问题，灵活关节由电的致动器开车。用PI转矩控制器的可完成的靠近环的追踪带宽可能由于零由负担动力学介绍了的传播是有限的，这被显示出。这限制被与PI转矩控制器在一致从负担运动使用积极反馈克服。积极反馈以负担速度，加速和猛拉被给。稳定性调节因为设计分散的PI转矩控制器以Routh-Hurwitz标准被导出。封闭系统的骚乱拒绝性质被描绘，分析被执行由省略加速或猛拉信号调查近似积极反馈的使用。这份报纸的结果为二DoF(自由的度)被说明系统。一个DoF系统的试验性的结果也被包括。

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简介：Purpose:Thisstudyaimedtoinvestigatewhetherworkloadintensitymodulatesexercise-inducedeffectonreactiontime(RT)performances,andmorespecificallytoclarifywhethercognitivecontrolthatplaysacrucialroleinrapiddecisionmakingisaltered.Methods:FourteenparticipantsperformedaSimonTaskwhilecycling20minatalight(firstventilatorythreshold,VT1e20%),moderate(VT1),orveryhard(VT1t20%)levelofexercise.Results:After15minofcycling,RTsarefasterthanduringthefirst5minofexercise.ThisbenefitdoesnotfluctuatewiththeintensityofexerciseandenlargesasRTlengthens.Despiteanumericaldifferencesuggestingagreaterfacilitationduringmoderateexercise(16ms)thanduringalightexercise(10ms),thebenefitisnotstatisticallydifferent.Interestingly,wedidnotobserveanysignsofworseningonRToronaccuracyduringveryhardexercise.Conclusion:Cognitivecontrolisextremelyrobustandappearsnottobeaffectedbytheintensityofexercise.Theselectiveinhibitionandthebetween-trialsadjustmentsareeffectivefromthebeginningtotheendofexercise,regardlessoftheworkloadoutput.

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简介：Theadditionofenvironmentalsensing,intheformofdepthsensing,tothecontrolofpowered,lower-limbprostheseswasproposed.Currently,thepredictionofwhichlocomotionmode-basedcontrollertousehasbeenperformedusingEMGfromtheresiduallimbandkineticsandkinematicsfromtheprosthesis.However,duetothevariabilityofEMG,kinetics,andkinematicsacrosstrials,days,andsubjects,itisdifficulttoproducerobustpredictionswithlowerrorrates.Thisworkfocusedonthede-

简介：Inthispaper,awavelet-filteredgenetic-neuro-fuzzy(WGNF)controlsystemdesignframeworkforresponsecontrolofahighwaybridgeundervariousearthquakeloadsisdiscussed.TheWGNFcontrollerisdevelopedbycombiningfuzzylogic,discretewavelettransform,geneticalgorithms,andneuralnetworksforuseasacontrolalgorithm.ToevaluatetheperformanceoftheWGNFalgorithm,itistestedonahighwaybridgeequippedwithhydraulicactuators.Itcontrolstheactuatorsinstalledontheabutmentsofthehighwaybridgestructure.Variousearthquakesusedasinputsignalsincludeanartificialearthquake,theEl-Centro,Kobe,NorthPalmSprings,TurkeyBolu,Chi-Chi,andNorthridgeearthquakes.ItisprovedthattheWGNFcontrolsystemiseffectiveinmitigatingthevibrationofthehighwaybridgeunderavarietyofseismicexcitation.

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简介：机电的致动器广泛地在许多工业应用被使用。通常有一些限制，在一个设计系统存在。这份报纸建议一个简单方法为机电的致动器设计抑制控制器。控制器合并在内部模型控制利用的想法并且为预兆的控制建模。他们与统一用标准控制系统结构被设计否定反馈。控制器的结构象设计过程一样相对简单。处理机制的输出限制基于许多时间向前走的控制植物行为的预言。机制增加控制控制植物的性能和安全。建议控制器提供的好处在在二个机电的致动器的控制系统执行的真实实验被表明了：一台DC马达和一个electrohydraulic致动器。

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简介：苏(1，1)动态对称具有在在理论、适用的物理分析无界的量系统的基本重要性。在这份报纸，我们学习与苏一起与量系统联系的概括协调状态的控制(1，1)动态对称。在苏上基于一个假Riemannian度量标准(1，1)组，我们为最小化驾驶系统到需要的最后的状态的控制的领域fluence获得必要条件。进一步的分析证明候选人最佳的控制答案能被分类进正常、反常的extremals。当控制Hamiltonian是非寓言的时，反常extremals能仅仅是经常的函数，当正常extremals能被Weierstrass椭圆形的函数根据控制Hamiltonian的parabolicity表示时。作为一种特殊情况，最大地挤压一个概括协调状态的最佳的控制解决方案是一个正弦曲线领域，它与在实验室被使用的一致。

简介：Inthispaper,aLotka-Volterracooperationsystemwithsinglefeedbackcontrolisproposedandstudied.Weinvestigatethelocalstabilityandtheglobalstabilityofthesystem.Ourstudyshowsthatwithsuitablerestrictiononthecoefficientsofthefeedbackcontrolvariable,thesystemcanstillremaingloballystableorbecomeextinct,whichshowsthatthefeedbackcontrolvariableplaysaveryimportantroleinthedynamicsbehaviorsofthesystem.

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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.

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简介：Projectionsfor20yearsofeconomicgrowthandchangeinthestructureoftheThaieconomyweremadefor180sectorsusingacomputablegeneralequilibrium(CGE)modeltocomparethefollowingfourscenarios:(1)standardgrowthwithinfinitesupplyoffactors,(2)finitelandsupply,(3)fixeduseofagriculturalchemicals,and(4)combinedfinitelandsupplywithfixeduseofagriculturalchemicals.Thecomputableprojectionssuggestthattheeconomiccostofhypotheticalenvironmentalcontrolinagricultureissmallandfurtherweakenedbyurbanization.Thecomputedstructuraldevelopmentpointstoefficiencyimprovementsspecifictosectorstoreturntheeconomytobalancedgrowth.