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简介：自主学习是现代教育领域提倡的一种新型学习模式，但人们空间有没有这种“自主”的潜质，本文让我们一同探视一番！

简介：基于自动电压，控制(AVC)和电池精力存储控制的改进自动电压协作控制策略(AVCCS)(BESC)被建议让光电的连接格子的系统(PVGS)减轻环境骚乱引起的电压变化。当小环境骚乱发生时，仅仅AVC被使用，当BESC与当大骚乱发生时，制止电压变化的AVC被合并时。决定电压变化的允许的振幅的一个可调节的参数被介绍认识到上述切换的进程。一个基准低电压分发系统包括PVGS被使用商业软件建立挖沉默。模拟结果证明在AVCCS下面的电压满足IEEE标准1547，并且安装电池电容是也减少了。同时，电池服务生活被在控制过程避免经常的控告/解除扩大。

简介：Basedontheself-excitedvibrationtheoryofice,thevibrationcontroltechnologyofjacketplatformisstudiedinthispaper.Themagnetorheologicalsuspensions(MR)unitischosenasthedamper,thecontrolobjectivefunctionforvibrationexcitedbyiceisdeterminedbyinstantaneousoptimalcontrol(IOC)method,andgeneticalgorithm(GA)isusedtoselecttheoptimalcontrolforce.Forthejacketplatformof40minheightanda3-floordeck,thevibrationresponsesinducedbyicehavebeencalculatedbeforeandaftercontrolconsideringthedifferentthicknessandspeedofice.Itisshownthatthecontrolmethodpresentedinthispapercanreducethevibrationresponseby30%,anditisfeasibletoadoptMRabsorberandGAinthecontrolofvibrationinducedbyice.

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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.

简介：为了改进表面的用机器制造的精确磨擦，用机器制造，有高效的amicropositioning细工品桌子被用作辅助在喂机制实现纳米水平放和动态赔偿。为了更好理解磨擦机器的特征，与微放调制了细工品桌子，磨擦系统的动态模型与形式的合成和Lagrange被建立“s方程方法。磨擦系统被划分成五个分系统。为每个分系统，概括运动学并且势能被获得。因此，磨擦系统的动态模型在形式的域被给。磨擦过程的起浪基于车轮和细工品颤动被完成。有微分追踪者的一个非线性的比例的不可分的衍生物(PID)控制器被开发认识到动态控制。模拟结果证明细工品的用机器制造的精确性能被利用微放细工品桌子实现动态赔偿有效地改进。试验性的测试被执行验证建议方法，并且细工品的起浪能从0.46下午被归结为0.10亩m。

简介：Clinicaldisordersoftenarecharacterizedbyabreakdownindynamicalprocessesthatcontributetothecontrolofuprightstanding.Disruptiontoalargenumberofphysiologicalprocessesoperatingatdifferenttimescalescanleadtoalterationsinposturalcenterofpressure(CoP)fluctuations.Multiscaleentropy(MSE)hasbeenusedtoidentifydifferencesinfluctuationsofposturalCoPtimeseriesbetweengroupswithandwithoutknownphysiologicalimpairmentsatmultipletimescales.Thepurposeofthispaperisto:1)reviewbasicelementsandcurrentdevelopmentsinentropytechniquesusedtoassessphysiologicalcomplexity;and2)identifyhowMSEcanprovideinsightsintothecomplexityofphysiologicalsystemsoperatingatmultipletimescalesthatunderliethecontrolofposture.WereviewandsynthesizeevidencefromtheliteratureprovidingsupportforMSEasavaluabletooltoevaluatethebreakdowninthephysiologicalprocessesthataccompanychangesduetoaginganddiseaseinposturalcontrol.ThisevidenceemergesfromobservedlowerMSEvaluesinindividualswithmultiplesclerosis,idiopathicscoliosis,andinolderindividualswithsensoryimpairments.Finally,wesuggestsomefutureapplicationsofMSEthatwillallowforfurtherinsightintohowphysiologicaldeficitsimpactthecomplexityofposturalfluctuations;thisinformationmayimprovethedevelopmentandevaluationofnewtherapeuticinterventions.

简介：Inthelexiconofart,youhavebeengivenmanynames.Assoonasyouenterthesanctifiedspaceofthemuseum,youareknownasthevoyeuristicviewer,the

简介：基于的活跃颤动灵活冗余的操纵者控制的神经网络上的调查被进行。操纵者的聪明的连接与到哪个是依附的piezoceramic致动器和紧张计量器传感器的灵活连接被综合。Anonlinear适应控制策略把神经网络称为基于的间接适应控制(NNIAC)被采用改进操纵者的动态性能。the4分层的动态周期性的神经网络(DRNN)的数学模型被介绍。展示DRNN拓扑学的neuro标识符和theneuro控制器被设计离开线以便提高NNIAC的起始的坚韧性。由或者调整neuro标识符和neuro控制器，操纵者为完成需要的动态表演在线上被控制。最后，平面3R有一个聪明的连接的冗余的操纵者作为一个解说性的例子被利用。Thesimulation结果证明了控制策略的有效性。

简介：Inahybridsystem,thesubsystemswithdiscretedynamicsplayacentralroleinahybridsystem.Inthecourseofengineeringmachineryofclusterconstruction,thediscretecontrollawishardtoobtainbecausetheconstructionenvironmentiscomplexandthereexistmanyaffectingfactors.Inthispaper,hierarchicallyintelligentcontrol,expertcontrolandfuzzycontrolareintroducedintothediscretesubsystemsofengineeringmachineryofclusterhybridsystem,soastorebuildthehybridsystemandmakethediscretecontrollaweasilyandeffectivelyobtained.Thestructures,reasoningmechanismandarithmeticofintelligentcontrolarereplantedtodiscretedynamic,conti-nuousprocessandtheinterfaceofthehybridsystem.Thestructuresofthreetypesofintelligenthybridsystemarepresentedandthehumanexperiencessummarizedfromengineeringmachineryofclusteraretakenintoaccount.

简介：滑动模式控制的适应backstepping与输入浸透为不明确的非线性的系统的一个班被建议。一个命令过滤了途径被用来阻止输入浸透破坏神经网络(NN)的适应能力。控制法律和NN的适应更新法律在Lyapunov功能的意义被导出，因此稳定性能甚至在输入浸透下面被保证。建议控制法律对骚乱是柔韧的，并且它能也消除输入浸透的影响。模拟结果显示建议控制器有好表演。

简介：Inthispaper,ahybridadaptivecompensationcontrolschemeisproposedtocompensatethefrictionoccurrenceandothernonlineardisturbancefactorsthatexistinthehigh-precisionservosystem.Anadaptivecompensationcontrollerwithadual-observerstructureisdesigned,whiletheLuGredynamicfrictionmodelwithnon-uniformparametricuncertaintiescharacterizesthefrictiontorque.Consideringtheinfluenceoftheperiodicdisturbancetorqueandparametricuncertainties,fuzzysystemsandarobusttermareemployed.Inthisway,thewholesystemcanbetreatedasasimplelinearmodelafterbeingcompensated,thentheproportional-derivative(PD)controllawisappliedtoenhancingthecontrolperformance.OnthebasisofLyapunovstabilitytheory,theglobalstabilityandtheasymptoticconvergenceofthetrackingerrorareproved.Numericalsimulationsdemonstratethattheproposedschemehaspotentialstorestraintheimpactofdisturbanceandimprovingthetrackingperfor

简介：Concussion,ormildtraumaticbraininjury,incidencerateshavereachedepidemiclevelsandimpairedposturalcontrolisacardinalsymptom.Thepurposeofthisreviewistoprovideanoverviewofthelinearandnon-linearassessmentsofpost-concussionposturalcontrol.Thecurrentacuteevaluationforconcussionutilizesthesubjectivebalanceerrorscoringsystem(BESS)toassessposturalcontrol.Whilethesensitivityoftheoveralltestbatteryishigh,thesensitivityoftheBESSisunacceptablylowand,withrepeatadministration,isunabletoaccuratelyidentifyrecovery.Sophisticatedmeasuresofposturalcontrol,utilizingtraditionallinearassessments,haveidentifiedimpairmentsinposturalcontrolwellbeyondBESSrecovery.Bothassessmentsofquietstanceandgaithaveidentifiedlingeringimpairmentsforatleast1monthpost-concussion.Recently,theapplicationofnon-linearmetricstoconcussionrecoveryhavebeguntoreceivelimitedattentionwiththemostcommonlyutilizedmetricbeingapproximateentropy(ApEn).ApEn,mostcommonlyinthemedial-lateralplane,hassuccessfullyidentifiedimpairedposturalcontrolintheacutepost-concussiontimeframeevenwhenlinearassessmentsofinstrumentedmeasuresareequivalenttohealthypre-injuryvalues;unfortunatelythesestudieshavenotgonebeyondtheacutephaseofrecovery.Onestudyhasidentifiedlingeringdeficitsinposturalcontrol,utilizingShannonandRenyientropymetrics,whichpersistatleastthroughclinicalrecoveryandreturntoparticipation.Finally,limitedevidencefromtwostudiessuggestthatindividualswithaprevioushistoryofasingleconcussion,evenmonthsoryearsprior,maydisplayalteredApEnmetrics.Overall,non-linearmetricsprovideafertileareaforfuturestudytofurthertheunderstandingofposturalcontrolimpairmentsacutelypost-concussionandaddressthecurrentchallengeofsensitiveidentificationofrecovery.

简介：Amethodofmeasuringtheinteractionsinamultivariablecontrolsys-tem(MVCS)intimedomainisdefinedinthispaper.Anintelligentdecouplingcom-pensatorisdesignedintermsoftheconceptoffuzzycontrol,sothattheauto-tuningofcontrollers’parametersina2×2MVCScanbeturnedintothatoftwoindependentsingle-loopcontrolsystems(SLCS).Themethodpresentedinthepaperhassuccess-fullybeenusedinasimulationexperimentontheautomatictuningofacoordinatedcontrolsystem(CCS)inthedrum-boilerturbogeneratingunit(DBTU)andthesimu-lationresultsaxesatisfactory.

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简介：Variable-air-volume(VAV)air-conditioningsystemisamulti-variablesystemandhasmulticouplingcontrolloops.Whileallofthecontrolloopsareworkingtogether,theyinterfereandinfluenceeachother.AmultivariabledecouplingPIDcontrollerisdesignedforVAVair-conditioningsystem.Diagonalmatrixdecouplingmethodisemployedtoeliminatethecouplingbetweentheloopofsupplyairtemperatureandthatofthermal-spaceairtemperature.ThePIDcontrollerparametersareoptimizedbymeansofanimprovedgeneticalgorithminfloatingpointrepresentationstoobtainbetterperformance.Thepopulationintheimprovedgeneticalgorithmmutatesbeforecrossover,whichishelpfulfortheconvergence.Additionallythemicromutationalgorithmisproposedandappliedtoimprovetheconvergenceduringthelaterevolution.Tosearchthebestparameters,theoptimizedparametersrangesshouldbeamplified10timestheinitialidealparameters.Thesimulationandexperimentresultsshowthatthedecouplingcontrolsystemiseffectiveandfeasible.Themethodcanovercomethestrongcouplingfeatureofthesystemandhasshortergoverningtimeandlessover-shootthannon-optimizationPIDcontrol.

简介：Toeffectivelyreducethedamagetopeopleanddevicesincivildefenseengineeringsubjectedtoblastshock,ablastshockisolationsystemwithmagnetorheologicalfluiddampers(MRFD)isproposed.MRFDcanprovidecontinuouslyadjustableCoulombfrictionandhasmanyadvantagesforsemi-activecontrol.NumericalsimulationofthisisolationsystemisfinishedusingMatlabsimulinktoolbox.Generalsemi-activecontrolalgorithmsareconsidedbasedoninstantaneousoptimalactivecontrolalgorithm.Andtheresultsindicatethattheshockisolationsystemcanworkefficiently,decreasingabout93%ofthepeakaccelerationoftheisolationfloor.

简介：Severevibrationofundergroundstructuresmaybeinducedunderblastloads.Accordingtothecharacteristicsoftheexplosion-inducedgroundshockwave,anew-typedamper,inversecontrolmagneto-rheological(MR)damperwasdesignedtocontrolthevibration.Thehigh-frequencyperformancetestoftheMRdamperwascarriedoutonthesmallshakingtable.ItisshownthattheperformancecanbemodeledbyuseofthemodifiedBouc-Wenmodel,andtheparametersofthemodelkeepstableintheranqeof15-50Hz.