简介:Tosolvetheproblemoflowefficiencyinpiperoutingdesign,animprovedgeneticalgorithmbasedapproachisproposed.Topresentthisapproach,thepapermainlydescribesagenerationmethodofnodesconsideringthesafetydistanceofpipesandthedirectionalconstraintsatterminals,thedefinitionofadoublecodingtechnique,thecollisiondetectionmethod,theconceptofenergyandthedefinitionoffitnessfunctions.Thesimilaritydetectionisintroducedtopreventclosebreedinginthecrossoveroperator,theselectionpressureiscontrolledaccordingtotheevolutionsituationandaheuristicmutationmethodisusedtoboosttheevolution.Simulationcaseshowsthatthisapproachismorepracticalandcansatisfydifferentdesignrequirementsbychangingalgorithmparameters.
简介:计算机图形和人的计算机相互作用的许多最近的应用程序作为输入设备采用了颜色照相机和深度照相机。因此,拿不同颜色和深度的硬件的两种类型的有效刻度输入被要求。我们的途径移开在明确地象在深度和颜色照相机之间的转变一样解决照相机intrinsics的以前的方法使用非线性的优化的数字困难。混合参数的一个矩阵被介绍线性化我们的优化。混合参数从深度提供转变参量的空格(深度照相机图象)到一种颜色由从深度照相机联合深度照相机和旋转转变的内在的参数到颜色的参量的空格(颜色照相机图象)照相机。旋转转变和内在的参数能明确地在标准QRfactorisation的帮助下从我们的混合参数被计算。我们与地面真相深度信息被微软Kinect捕获的综合数据和真实世界的数据测试我们的算法。当由于使用混合参数的优点花少得多计算时间(Herreras方法的1/50和Raposos方法的1/10)时,实验证明我们的途径能向刻度的可比较的精确性提供最先进的算法。
简介:Cyber-physicalsystems(CPSs)arenewemergingsystemsthatseamlesslyintegratephysicalsystems,communicationsystemsandcomputationsystems.Theirwideusehasbeenwitnessedinthepastdecadesinmanycrossdisciplinefieldssuchassmartenergysystems,industrialprocesscontrol,aerospaceandautomobileengineering,health-careandassistedliving,tojustnameafew.Formanyofthesesystems,secureoperationsareofkeycon-
简介:Fuzzycontrolproblemsforsystemswithboundeduncertaindelayswerestudied.BasedonLyapunovstabilitytheoryandmatrixtheory,anonlinearstatefeedbackfuzzycontrollerwasdesignedbylinearmatrixinequalities(LMI)approach,andtheglobalexponentialstabilityoftheclosed-loopsystemwasstrictlyproved.Forafuzzycontrolsystemwithboundeduncertaindelays,undertheglobalexponentialstabilityconditionwhichisreducedtoplinearmatrixinequalities,thecontrollerguaranteesstabilityperformancesofstatevariables.Finally,thesimulationshowsthevalidityofthemethodinthispaper.
简介:Inordertoovercomemanyproblemsandshortcomingsofourthree-dimensionaldesigneducationinmechanicaldrawing,makethestudentsmasterthemoderndesignmethodandtechnologyeasily,modernmodelingmethodandshapingmethodareintroduced,andtheshapingdesigningmethodsofassembled-bodyareanalyzedincludingbasicrequirementsforshapingdesign,commonprinciplesofshapingandshapingdesignmethod.Itwillbehelpfultoimprovethespatialimaginationandmodellingabilityofstudent.
简介:Thequalityofskeletonsystemforthecheetahrobotgoeshandinhandwithitsbionicresultofitsshape,structureandfunctions.Inviewoftheskeletonsystemconstitutionandstructuralcharacteristicofthecheetah,theteamappliedstructuredesign,stimulationanalysisandparameteroptimizationtodevelopingthecheetahrobot.Inaddition,aftertheinventionofcheetahrobot'santeriorlumbarvertebrabasedonitsfunctionalattributeandconnectivityattribute,theSolidworksSimulationwasutilizedtoanalyzethedesign,accordingtowhichimprovementonthelumbarvertebrawasmade.Plus,theadvantagesoftheCADandCAEmadethehighefficiencyofdesignworkandhighqualityofthecheetahrobotpossible.
简介:Basedonhighorderdynamicneuralnetwork,thispaperpresentsthetrackingproblemforuncertainnonlinearcompositesystem,whichcontainsexternaldisturbance,whosenonlinearitiesareassumedtobeunknown.Asmoothcontrollerisdesignedtoguaranteeauniformultimateboundednesspropertyforthetrackingerrorandallothersignalsintheclosedloop.Certainmeasuresareutilizedtotestitsperformance.Noaprioriknowledgeofanupperboundonthe'optimal'weightandmodelingerrorisrequired;theweightsofneuralnetworksareupdatedon-line.Numericalsimulationsperformedonasimpleexampleillustrateandclarifytheapproach.