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

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简介：<正>AnonlinearhingedextensibleelasticbodyequationwithstrongstructuraldampingandBalakrishnan-Taylordampingoffullexponentisstudiedasageneralmodelforlargespacestructuresofhigherdimensions.Inthispaper,theabsorbingsetsandfiatinertialmanifoldareobtainedforthisnonlinearbodyequation.Thecontrolspilloverproblemassociatedwiththestabilizationofthisequationisresolvedbyconstructingalinearfinitedimensionalfeedbackcontrolbasedontheexistenceofinertialmanifoldsoftheuncontrolledequation.Moreover,theresultsobtainedarerobustwithrespecttotheuncertaintyinstructuralparameters.

简介：Itisconcernedwiththeproblemofdisturbanceattenuationwithstabilityforuncertainnonlinearsystemsbyadaptiveoutputfeedback.Byapartial-stateobserverandBacksteppingtechnique,anadaptiveoutputfeedbackcontrollerwasconstructed,whichcansolvethestandardgaindisturbanceattenuationproblemwithinternalstability.

简介：AKindofdirectmethodsispresentedforthesolutionofoptimalcontrolproblemswithstateconstraints.Thesemethodsaresequentialquadraticprogrammingmethods.AteveryiterationaquadraticprogrammingwhichisobtainedbyquadraticapproximationtoLagrangianfunctionandLinearapproximationstoconstraintsissolvedtogetasearchdirectionforameritfunction.ThemeritfunctionisformulatedbyaugmentingtheLagrangianfunetionwithapenaltyterm.Alinesearchiscarriedoutalongthesearchdirectiontodetermineasteplengthsuchthatthemeritfunctionisdecreased.Themethodspresentedinthispaperincludecontinuoussequentialquadraticprogrammingmethodsanddiscreatesequentialquadradeprogrammingmethods.

简介：Acomparisonoftheadsorptionofbenzoicacidandp-nitrobenzoicacidonthenewhypercrosslinkedpolymericadsorbentAM-I,withthatbymacroporousAmberliteXAD-4,includingtheequilibriumadsorptionisotherms,thedynamicadsorptionbehaviorsthroughcolumnandtheadsorptionthermodynamicswerestudied.ResultsshowthatFreundlichequationgivesafittingadsorptionisotherm.ThespecificsurfaceofAM-lisonly67%ofthatofAmberliteXAD-4,buttheadsorptioncapacitiesonAM-1aremuchhigherabout125%～166%thanthatonAmberliteXAD-4,whichiscontributedtothemicroporemechanismandpolarity.Thenegativevaluesoftheadsorptionenthalpyareindicativeofanexothermicprocess.Enthalpyandfreeenergychangesofadsorptionbothmanifestaphysic-sorptionprocess.Thenegativevaluesoftheadsorptionentropyindicatethattheadsorptioniswellconsistentwiththerestrictedmobilitiesandtheconfigurationsoftheadsorbedbenzoicacidmoleculesonthesurfaceofstudiedadsorbentswithsuperficialheterogeneity.Bothadsorbentswereusedinmini-columnexperimentsforadsorbingbenzoicacidexpectingtoelucidatethehigherbreakthroughadsorptioncapacityofthenewhypercrosslinkedpolymericadsorbentAM-1ascomparedwiththatofAmberliteXAD-4.

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简介：TwospeciesofN-arylpyrazolescontainingactiveaminogroupweresynthesized.AndformylationsofN-arylpyazolescontainingaminoindifferentpositionofpyrazoleringsusingVilsmeier-Haackreactiongaveaseriesofusefulpyrazoleintermediates.Theimportantfeaturesofthisprotocolwerecheapmaterials,easyprocess,mildreactionconditionsandgoodyieldofproducts.

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简介：在这篇论文，我们为一个模型调查先验的错误估计和超级集中性质最佳的控制问题双线性打申请，它包括某参数评价。州、有肋骨是由片的discretized明智的线性功能和控制被片接近明智的经常的功能。我们为控制和州的近似导出先验的错误估计和超级集中分析。我们也在状态附近给最佳的L2标准错误估计和几乎最佳的L^∞-norm估计并且有肋骨。结果能乐意地被使用在如此的最佳的控制问题的适应有限元素近似构造后验错误评估者。

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简介：Strongasymmetricalvorticesappearontheleewardofslenderbodyathighanglesofattack,whichhasveryunfavorableeffectonthestabilityandcontroloftheaircraft.Amethodisdevelopedtocontrolthesideforceofslenderbodyathighanglesofattack,andisverifiedinwindtunnel.Athin-filmtriangularself-excitedoscillationflagisfixedatthetipoftheslenderbodymodelwhosesemi-apexangleis10°.Sideforceisapproximatelylinearlyproportionaltoroll-settingangleofself-excitedoscillationflagathighanglesofattack,andtheslopoffittingstraightlineobtainedbytheleastsquaremethodis-0.158.Thelinearrelationshipbetweensideforceandroll-settingangleprovidesconveniencefordevelopingsideforcecontrollawofslenderbodyathighanglesofattack.Experimentaldatashowsthatthesideforcecoefficientsvarylinearlywithroll-settingangleswhenaspecificplasticself-excitedoscillationflagisusedasthecontrolflag.Therangeofsideforcecoefficientandroll-settingangleare,respectively,-3.2to3.0and-20°to20°.Thedeviceissimple,effective,andisofgreatpotentialinengineeringapplication.

简介：在这份报纸，分离时间的静态的输出反馈控制设计问题被考虑。一非线性结合坡度方法为解决源于这个最佳的控制问题的一个非强迫的矩阵优化问题被分析并且学习。另外，通过到优化问题的某些parametrization，一个起始的稳定的静态的产量反馈获得矩阵没被要求开始conjugate坡度方法。最后，建议算法从基准收集通过几个测试问题数字地被测试。

简介：活跃的腱，由一个排水量致动器和一个并置的力量传感器组成，被Preumont和他的同事首先介绍稀释大灵活空间结构，和他们采用的控制算法的颤动是不可分的力量反馈。这篇论文论述一新比例积分(PI)强迫反馈算法完成更大的抑制为没有结构的要求的结构的比率当模特儿。控制系统的稳定性被显示出，并且类似于JPL-MPI的结构的模拟为空格结构的颤动控制表明建议算法的有效性。

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简介：Thispaperconsidershowtouseagroupofrobotstosenseandcontroladiffusionprocess.Thediffusionprocessismodeledbyapartialdifferentialequation(PDE),whichisabothspatiallyandtemporallyvariantsystem.Therobotscanserveasmobilesensors,actuators,orboth.CentroidalVoronoiTessellationsbasedcoveragecontrolalgorithmisproposedforthecooperativesensingtask.Forthediffusioncontrolproblem,thispaperconsiderssprayingcontrolviaagroupofnetworkedmobilerobotsequippedwithchemicalneutralizers,knownassmartmobilesprayersoractuators,inadomainofinteresthavingstaticmeshsensornetworkforconcentrationsensing.ThispaperalsointroducestheinformationsharingandconsensusstrategywhenusingcentroidalVoronoitessellationsalgorithmtocontroladiffusionprocess.Theinformationissharednotonlyonwheretospraybutalsoonhowmuchtosprayamongthemobileactuators.BenefitsfromusingCVTandinformationconsensusseekingforsensingandcontrolofadiffusionprocessaredemonstratedinsimulationresults.