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1.
IntroductionTransientstateanalysishasbeenanactiveresearchareainmanyengineeringproblems.Inpracticalsituation ,likestructuralmechanics,thesystemsbeingstudiedareusuallynonlinearandtime_dependent.Theanalyticalmethodstosolvetheseproblemsareimpossible .Thenum…  相似文献   

2.
IntroductionThestochasticoptimalcontrolproblemsofreflecteddiffusionprocesseshasbeenconsideredbysomemathematicians,forinstance ,P .L .Lionsin [1 ] ,andJ.L .MenaldiandM .Robinin[2 ] .Inthispaper,wewillconsiderastochasticoptimalcontrolproblemofreflecteddiffusionswit…  相似文献   

3.
IntroductionManymechanicalsystemscanbeviewedaslinearHamiltoniansystems.Whenwestudytheeffectsofsystemparametersonthebehaviorofthesystems,thesystemcanberegardedasthesystemdependingonparameters.Veryimportantsystemparameters ,suchascriticalload ,criticalang…  相似文献   

4.
Complex Inner Product Averaging Method for Calculating Normal Form of Ode   总被引:2,自引:0,他引:2  
IntroductionMostnonlineardynamicsystemsaremulti_degree_of_freedomsystemsinthefieldofengineering[1,2 ],nonlineardynamicsystemsdonothaveexactlytheoreticsolutions.Therefore,itisafocalpointconcernedbyscientiststosearchforapproximatesolutionsforalongtime ,andr…  相似文献   

5.
Thethreshold_crossingofstochasticprocessesisaproblemoftenencounteredinthestudyofvariousphysicalphenomena .Theterm ,threshold_crossing ,isusedtoindicateacertainfixedvaluebeingcrossedbytheoscillatingrealizationζ(1) (t)ofastochasticprocessζ(t) ,asshownbythetypi…  相似文献   

6.
IntroductionTheMelnikovmethodfordetectingchaos[1]hasbeenextendedtohigh_dimensionalsystemswithslowly_varyingangleparameters ,butthecorrespondingunperturbedintegrablesystemsarerequiredtobeHamiltonian[2 ].Forperturbedplanarnon_Hamiltonianintegrablesystems,th…  相似文献   

7.
IntroductionIntheindustrialpractice ,manycontrolproblemofsystemscanbestudiedthroughinterconnectedsystems.Earlierresearchoninterconnectedsystemfocusedonpowersystem[1,2 ],controlofdistributedsystems (e .g .,regulationofseismiccables,vibrationcontrolinbeams,etc.) …  相似文献   

8.
A Universal Matrix Perturbation Technique for Complex Modes   总被引:1,自引:0,他引:1  
IntroductionMatrixperturbationmethodsforthedynamicreanalysisofself_adjointsystemshavebeenwelldeveloped[1] .However,manysystemsgiverisetogeneralnon_self_adjointformulations.Importantexamplesareaeroelasticstabilityofsystems,arbitrarilydampedorgyroscopicsys…  相似文献   

9.
IntroductionItisanimportanttopictosearchfornewintegrablesystemsissolitontheory .Inrecentyears,twoveryeffectiveapproachesthatproduceinfinite_dimensionalandfinite_dimensionalintegrableHamiltoniansystemsrespectivelyhavebeendeveloped .Thefirstoneisthetrace…  相似文献   

10.
IntroductionChaoticistheinherentrandomnessinthedefinitesystem .Thedefinitenessiscausedbythesysteminternalsbutnotbytheexternaldisturbance,whiletheinherentrandomnessistheirregularanddifficult_to_be_predictedbehaviorofthesystem .Whatismostattractiveofthec…  相似文献   

11.
IntroductionChaoticistheinherentrandomnessinthedefinitesystem .Thedefinitenessiscausedbythesysteminternalsbutnotbytheexternaldisturbance[1- 4],whiletheinherentrandomnessistheirregularanddifficult_to_be_predictedbehaviorofthesystem[5 ,6 ].Whatismostattractive…  相似文献   

12.
IntroductionAsanenrollednewdisciplineinChineselibraryclassificationpansystemstheoryisatransfieldmultilayernetwork_likeresearchwiththeemphasisonpansystems ,whichexplorescertaincombinationsofmathematicalthinking ,systemsthinking ,dialecticalthinkingandpoe…  相似文献   

13.
Modeling and analysis of a coupled rigid-flexible system   总被引:1,自引:0,他引:1  
IntroductionManymechanicalsystemssuchasrobotmanipulator,turbineblades,helicopterpropellerandman_madesatellitewithflexibleattachmentsarecomposedofrigidandflexiblebodies.Theyarecalledcoupledrigid_flexiblesystems.Correctpredictionsofthebehaviorofflexibl…  相似文献   

14.
IntroductionThestudyofrandomparametricexcitedsystemsaremoreimportantthanthatofrandomexternalexcitedones,andaretheoreticallymoredifficultespeciallywhentheexcitationsarenarrow_bandrandomprocesses[1].Inthecasewhenthesystemsareexcitedbycombineddeterministi…  相似文献   

15.
IntroductionArefinedepitomeofvariouspansystemsmethodsistocomprehendandoperateabout 2 0pansystemscategorieswhichcanbeexpandedasthefollowingpithyformulasexpressions:Thepanderivatives (orthechange_changerelations)oftheexterior_interior(orthefunction_structu…  相似文献   

16.
IntroductionPansystemsmethodologygeneralizesthetraditionalautomationmodel,troublediagnosticmodel,artificialneuralnetworkmodel...  相似文献   

17.
IntroductionParametricalyexcitedvibrationshavebenextensivelyappliedtoinengineringsystems[1],suchasthevibrationofmachines,dyna...  相似文献   

18.
IntroductionWhenanalyzingthedynamicinteractionofasoil_structuresystem,thekeystepistocalculatethedynamicstiffnessmatrixoftheso...  相似文献   

19.
IntroductionTurbulentflowisanonlinearstochasticprocessandoneofitsbasiccharacteristicsislargereffectivetransportcapabilitythanthatoflaminarflow .Ingeneral,transportinfluidsisgradient,i.e.momentum ,energyaretransportedfromthehighervalueregiontothelowervalu…  相似文献   

20.
Controllingchaoshasdrawnincreasingattentionbecauseofitstheoreticalimportanceandpossibleapplications,andmuchprogresshasbeenachieved[1~4].Theexactlinearizationisanimportantapproachtoanalyzeanddesignnonlinearcontrolsystems,andhasbeenemployedtocontrolcha…  相似文献   

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