英文翻译---汽车—司机系统的研究处理 英文.pdf英文翻译---汽车—司机系统的研究处理 英文.pdf

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HANDLINGSTUDIESOFDRIVERVEHICLESYSTEMSMLIN,AAPOPOVANDSMCWILLIAMSCHOOLOFMECHANICAL,MATERIALS,MANUFACTURINGENGINEERINGANDMANAGEMENT,UNIVERSITYOFNOTTINGHAM,UNIVERSITYPARK,NOTTINGHAMNG72RD,UKEMAILEAXMLNOTTINGHAMACUKTHEDRIVERVEHICLESYSTEMAPPROACHPROVIDESAFIRMBASISFORANALYSINGVEHICLEANDDRIVERDYNAMICSINVEHICLEHANDLINGDESIGNTHEPAPERAIMSTOPROVIDEANANALYSISOFDRIVER’SSTEERINGANDSPEEDCONTROLDURINGDRIVERVEHICLEINTERACTIONGENERICMATHEMATICALMODELSOFVEHICLEANDDRIVERAREIMPLEMENTED,ANDTHEHANDLINGCHARACTERISTICSINTYPICALMANOEUVRESARESTUDIEDTHROUGHNUMERICALSIMULATIONSASINFORMATIONTECHNOLOGYANDELECTRONICSYSTEMSAREWIDELYINTRODUCEDFORVEHICLECHASSISCONTROLNOWADAYS,NEWHUMANFACTORPROBLEMSHAVEBEENPOSEDINTHESIMULATIONFORVEHICLEHANDLINGSTUDIESTHEPROPOSEDMODELSHEREPROVIDETOOLSFOREXPLORINGTHEEFFECTSOFACTIVECHASSISINTERVENTIONSYSTEMSONTHEDRIVERVEHICLEKEYWORDS/DRIVERVEHICLESYSTEMS,VEHICLEDYNAMICS,DRIVERBEHAVIOUR,CHASSISENHANCEMENTSYSTEMS1INTRODUCTIONRECENTLY,ASVIRTUALPROTOTYPINGHASBEENINCREASINGLYAPPLIEDINVEHICLEDEVELOPMENT,VEHICLEHANDLINGDESIGNINAVIRTUALENVIRONMENTHASALSOBEENWIDELYUSEDINBOTHACADEMICRESEARCHANDTHEMANUFACTURINGAREAFORVEHICLEHANDLINGSIMULATIONS,VEHICLEDYNAMICSSIMULATIONMODELSVDSMSARENECESSITIESFORTHEDEVELOPERSSINCE1960’S35611,VDSMSHAVEBEENDEVELOPEDFORAVARIETYOFAPPLICATIONS,INCLUDINGDYNAMICANALYSIS,INTERACTIVEDRIVINGSIMULATION,ANDVEHICLETESTINGTHEMODELCOMPLEXITYANDSOLUTIONPROCEDURESAREDEFINEDACCORDINGTOAGIVENAPPLICATIONITCANBESEENTHATTHEVEHICLEANDDRIVERFORMACLOSELYCOUPLEDMANMACHINESYSTEMTHEINTERACTIONBETWEENTHEDYNAMICSOFTHEVEHICLEANDTHEDRIVERBEHAVIOURPLAYSAPARAMOUNTROLETHROUGHOUTTHEWHOLEPROCESSOFTHESIMULATIONATTHESAMETIME,DUETOTHEDESIREFORPERSONALMOBILITY,AUTOMOTIVECHASSISENHANCEMENTSYSTEMSAREINTRODUCEDINTOVEHICLESTHEYARETARGETINGONPROVIDINGSAFETY,STABILITYANDCOMFORT,ANDMINIMISINGTHEENVIRONMENTALIMPACTSHOWEVER,ITISARGUEDTHATINSOMECASESTHESECHASSISENHANCEMENTSYSTEMSCANCAUSEMOREHARMTHANGOODIN9,SHARPPOINTEDOUTTHATTHEASSESSMENTOFDRIVERVEHICLEDYNAMICSQUALITIESINTHECONTEXTOFELECTRONICENHANCEDVEHICLESCONTAINSMANYSEPARATEQUALITYISSUESANDMANYDESIGNCONFLICTSTHISINVOLVESDRIVERVEHICLESPEEDCONTROLANDITSRELATIONSHIPWITHDIRECTIONAL/STEERINGCONTROL,WHICHHASONLYRECENTLYRECEIVEDATTENTIONADETAILEDREVIEWONAUTOMOTIVECHASSISENHANCEMENTSYSTEMSINHEAVYVEHICLES,PROVIDEDBYPALKOVICSANDFRIES8,INCLUDESSYSTEMSSUCHASANTILOCKBRAKINGSYSTEMABS,TRACTIONCONTROLSYSTEMTCS,REARAXLESTEERINGSYSTEMANDDYNAMICSTABILITYCONTROLSYSTEMITISSUGGESTEDTHATTHEDRIVERISKEPTINTHECONTROLLOOPASDRIVER’SINTENTIONISNECESSARYTOACTIVATETHESYSTEMSBYMAKINGAVEHICLEEASIERTOCONTROL,DRIVERSMAYBEENCOURAGEDTODRIVECLOSERTOTHEVEHICLELIMITS,THEREFOREAFFECTINGTHEINTENDEDSAFETYBENEFITSINTHEFOLLOWINGSECTIONS,ABASIC4DOFLONGITUDINAL,LATERAL,YAW,ROLLVEHICLEMODELANDADRIVERCONTROLMODELAREPRESENTEDTHEDRIVERMODELISDIRECTIONALLYSTRUCTUREDTOCONTROLVEHICLEHEADING/YAWANGLEANDLATERALPOSITION,ANDLONGITUDINALLYPERCEIVINGTHELONGITUDINALACCELERATIONERRORINSECTION4,DRIVERVEHICLEINTERACTIONISREVIEWEDTHESIMULATIONISTHENEMPLOYEDINSECTION5TOANALYSEMANOEUVRESINVOLVINGDOUBLELANECHANGEANDBRAKINGINTURN2VEHICLEMODELTHEVEHICLEISREPRESENTEDBYAFOURDEGREESOFFREEDOMMODEL4,FORTHELONGITUDINAL,LATERAL,YAWANDROLLMOTIONASSHOWNINFIG1,ALTHOUGHTHESUSPENSIONSARENOTINCLUDEDINTHEMODELLING,THEMODELUSESASIMPLIFIEDDESCRIPTIONOFBODYROLLASSUMINGAFIXEDROLLAXISDEFINEDBYTHEHEIGHTSOFTHEROLLCENTRESOFTHEFRONTANDREARAXLESOFTHEVEHICLEVEHICLEMODELPARAMETERSAREREPORTEDINTHEAPPENDIXTHEEQUATIONSOFMOTIONUSINGAXESFIXEDTOTHEVEHICLEBODYAREGIVENBY,ΔΔSINCOSYFFXFFXRFRVUM−G26ΔΔSINCOSXFFYFFYRFRUVMG26SINCOSSINSINCOSΔΔΦΔΔYFFXFFXRFHYRFBXFFYFFAPXZIRZI−−⋅−⋅⋅−⋅G26G26SINCOSCOSSINΔΔΦΦΦΦΦΦΦXFYFYRZRZFRFRFXZXFFFHFFHPCCKKRIPI−⋅−⋅G26G261MGΦΒZYCGHRΑFΑRUVVLCGCGABFZRFYRFXFFXRFZFFXRFXFFYF,RHGXZYXΔFZF,RFYFROLLAXISFIG1VEHICLEMODELWHEREFXF,FXR,FYF,FYR,ANDFZF,FZRAREVEHICLEAXLELONGITUDINAL,LATERALANDVERTICALFORCES,RESPECTIVELYRISTHEYAWRATEANDPANDΦARETHEROLLRATEANDROLLANGLETHESIDESLIPANGLESANDSTATICCAMBERANGLESOFTHEFRONTANDREARWHEELSFΑ,RΑANDFΓ,RΓCANBEDEFINEDINTERMSOFVEHICLEMOTIONVARIABLES,ΦΕΦΦΑΔΦΕΦΦΑRRFFRHUHPRBVARHUHPRAVA−GF7GF7GF8GF6GE7GE7GE8GE6−⋅−−−GF7GF7GF8GF6GE7GE7GE8GE6−⋅SINCOSTANSINCOSTAN2ΦΞΓΦΞΓRRFF3WHENTHEVEHICLEISRUNNINGATCONSTANTSPEED,THELONGITUDINALMOTIONCANBEUNCOUPLEDFROMTHEEQUATIONSOFMOTIONTHEDYNAMICSOFTHENONLINEARVEHICLEMODELINCLUDESTHEINFLUENCEOFTHENONLINEARTYRECHARACTERISTICS,WHICHAREMODELLEDBYTHE‘MAGICFORMULA’7THEEFFECTSOFLATERALANDLONGITUDINALLOADTRANSFERSHAVEBEENEVALUATEDTHROUGHASTEADYSTATEAPPROXIMATION10ASSUMINGAFIXEDROLLAXISPOSITION,THEEXPRESSIONOFTHELATERALLOADTRANSFERFORTHEFRONTANDTHEREARAXLESARE,__HDLHHATMRUFHDLHHBTMRUFRGRLATRZFGFLATFZΦΦ−∆−∆4THELONGITUDINALLOADTRANSFER,OCCURRINGWHILETHEVARIEDVEHICLEFORWARDVELOCITYISTAKENINTOACCOUNT,ISCALCULATEDASFOLLOWS,LHFFFGFRFXLONGZ/_⋅∆53DRIVERBEHAVIOURTHROUGHPATHPREVIEWOBVIOUSLY,ONLYTHEVEHICLEITSELFCANNOTMAINTAINADESIREDPATHTHISDEMANDSACOMBINATIONWITHDRIVERMODELTHEDRIVERHASVISUALANDMOTIONFEEDBACKSFORDEVELOPINGSTEERINGCONTROLACTIONSDRIVERBEHAVIOURTHROUGHPATHPREVIEWINVOLVESACTIONSBASEDONPERCEPTIONOFCOMMANDSFORDIRECTIONAL/STEERINGCONT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