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AUTOMOTIVESAFETYSYSTEMSANDTECHNOLOGYRESEARCHANDANALYSISABSTRACTAUTOPARTSOFGOODANDBADWILLDIRECTLYAFFECTTHESAFETYOFTHECAR,AREDIRECTLYRELATEDTOTHEPEOPLESLIFESAFETYANDSECURITYINWEALTHTHISARTICLEMAINLYFROMTHECARSACTIVESAFETYTECHNOLOGYANDPASSIVESAFETYTECHNOLOGYTWOASPECTSELABORATEDTHEIMPORTANCEOFCARPARTS,ANDHOWTOIMPROVETHESAFETYOFTHECARKEYWORDSAUTOMOBILE,ACTIVESAFETYTECHNOLOGY,PASSIVESAFETYTECHNOLOGYASTRAFFICTOOLSOFTHEMODERNIZATIONANDABSOLUTENUMBERINCREASESHARPLY,TRAFFICACCIDENTSAREALSOINCREASINGCARACCIDENTHASBECOMESEVEREGLOBALSOCIALISSUESUNDOUBTEDLY,ADVANCEDAUTOSAFETYFACILITIESARETHEDRIVINGSAFETYINDISPENSABLESAFEGUARDSO,WESHOULDSTART,FROMTECHNOLOGYTORESEARCHANDDEVELOPMENTOFHIGHPERFORMANCE,HIGHSAFETYCAR,ALSOWANTTOSTRENGTHENTHEREGULARINSPECTIONINCARS,SOTIMELYMAINTENANCEINVESTIGATION,MAKECARSOFTENINGOODTECHNICALSTATUS,SOASTOIMPROVETHESAFETYPERFORMANCEOFTHECARHEREWEINTRODUCEDACTIVESAFETYTECHNOLOGYANDAUTOMOBILECARPASSIVESAFETYTECHNOLOGYAUTOSAFETYISACCORDINGTOTHETRAFFICACCIDENTHAPPENEDBEFOREANDAFTERTHECLASSIFIEDONEISINATRAFFICACCIDENTTAKESAFETYMEASURES,ESPECIALLYBEFOREIMMEDIATELYWILLPRODUCERISKCONDITION,DRIVERSMANIPULATETHESTEERINGWHEELAVOIDOREMERGENCYBRAKETOAVOIDTRAFFICACCIDENTSINTHECAR,DRIVEINUSUALLYTOENSURETHEBASICMANIPULATIONSTABILITY,DRIVERSONTHESURROUNDINGENVIRONMENTANDTOENSURETHEVISUALRECOGNITIONSEXDRIVETHECARITSELF,DEVELOPEDTHEBASICPERFORMANCEANTLOCKBRAKINGSYSTEMABS,PREVENTSLIPPERYDRIVESYSTEMASR,ACTIVESUSPENSION,POWERSTEERINGANDFOURWHEELDRIVE4WD,FOURWHEELSTEERING4WS,LIGHTINGSYSTEM,WIPER,THEREARVIEWMIRROR,PREVENTFROMREARENDCOLLISIONCARALARMSYSTEMANDLASERRADAR,ETCTHESESECURITYDEVICESANDTECHNOLOGY,CALLEDACTIVESAFETYSYSTEM,CANALSOBECALLEDPREVENTIVESECURITYSYSTEMONTHEOTHERHAND,INORDERTOREDUCETRAFFICACCIDENTSANDCOMPANYBYPERSONNELDIRECTLYSUFFERDEGREE,ENSURECOMPANYTAKESTAFFANDPEDESTRIANSAFETY,SAYSTHESECURITYFORPASSIVESAFETY,CANALSOBECALLEDCONFLICTSAFETYWHENAFTERTHEACCIDENT,INORDERTOPREVENTDISASTERS,INCLUDINGPREVENTTHEEXPANSIONOFFIREANDMAKECREWFROMTRAFFICACCIDENTCANEXTRICATETHESECURITYDEVICESANDSYSTEMS,CALLEDPREVENTDISASTEREXPANDSECURITYSYSTEMONEAUTOMOBILEACTIVESECURITYTECHNOLOGY1ABSBRAKINGSYSTEMANTLOCKBRAKINGSYSTEMBRAKINGSYSTEM,LOCKDOBYABSCOMPUTERSASABS,HYDRAULICDEVICE,THEWHEELSPEEDSENSORS,BRAKEHYDRAULICPIPELINEANDELECTRICALWIRINGETCTHEIRSTRUCTURESARESHOWNBELOWABSTASSELEDFORTHECARINVARIOUSDRIVINGCONDITIONSBRAKINGPERFORMANCEANDBRAKESAFETYPARTICULARLYIMPORTANT,ESPECIALLYISEMERGENCYBRAKING,CANMAKEFULLUSEOFTHEPEAKBETWEENTIREANDROADSURFACEADHESIONPROPERTIES,IMPROVEPERFORMANCEANDREDUCEAUTOMOBILEFIGHTSIDESLIPBRAKINGDISTANCE,GIVEFULLPLAYTOTHEBRAKINGPERFORMANCE,BUTALSOINCREASETHEAUTOMOBILEBRAKINGPROCESSCONTROLSOASTOREDUCETHEPOSSIBILITYOFCARACCIDENTSNOINSTALLATIONABSCAR,IFTHEDRIVINGFORCETRAMPLEBRAKEPEDAL,WHEELWILLRAPIDLYLOWERSPEED,ANDFINALLYWHEELSSTOPTURNING,BUTBODYBECAUSEOFINERTIAREMAINSFORWARDSLIDINGTHISPHENOMENONWASATTHEWHEELANDPAVEMENTOCCURBETWEENLARGER“SLIP“,APPEARTHISKINDOFSITUATION,THECARTIRESOFAUTOMOBILELATERALSPREADSALMOSTDISAPPEAR,SOPOORFORCEWILLAPPEARTHEFOLLOWINGPHENOMENA1STEERINGSTABILITYFALLTHESTEERINGWHEELISINEFFECTIVE,VEHICLETAILMANIPULATIONOFCURL,SERIOUSWHENVEHICLECIRCLESORAPPEARFOLDINGPHENOMENON2HANDLINGFALLMANIPULATETHESTEERINGWHEELANDSHORTOFSTEERINGREQUIREMENTS3BRAKINGDISTANCEEXTENDEDMORETHANGENERALBRAKINGDISTANCESO,WECANIMAGINETOHAVEINSTALLEDABSSYSTEMOFTHECARSAFETYISVERYIMPORTANT2THEASRDRIVETORQUECONTROLSYSTEMABSAREUSEDTOPREVENTCARBRAKINGPROCESSWHEELLOCK,WILLWHEELSLIDINGRATECONTROLINIDEALRANGE,SOASTOSHORTENTHEBRAKINGDISTANCE,IMPROVEAUTOMOBILEBRAKINGDIRECTIONSTABILITYANDSTEERINGCONTROL,SOASTOIMPROVETHESAFETYOFTHECARALONGWITHTHEINCREASEOFVEHICLEPERFORMANCEREQUIREMENTS,NOTONLYINBRAKINGPROCESSREQUIREDTOPREVENTWHEELLOCK,ANDASKEDTHEDRIVERTOPREVENTDRIVEROLLERSKATINGTURNINTHEPROCESS,MAKINGCARSINTHEDIRECTIONSTABILITY,DRIVINGPROCESSSTEERINGCONTROLABILITYANDACCELERATIONPERFORMANCE,SOAREIMPROVEDBYTHECARDRIVETORQUESTEERINGSYSTEMASRACCELERATIONSREGULATIONSLIPASRISTHEPERFECTCOMPLEMENTANDABSASR,BUTMOSTALONEISSETWITHABSCOMBINEDTOGETHER,COMMONLYUSEDABS/ASRSAYS,CALLEDANTISKIDCONTROLSYSTEMASRISMAINLYUSEDTOPREVENTCARINTHEBEGINNING,ACCELERATETHEWHEELS,GUARANTEESLIPINTHECARACCELERATEDRATEANDIMPROVETHESTABILITYINBADPAVEMENTDRIVEATTACHEDCONDITIONSITMAKESNODIFFERENCESPEEDINTHECARLOCKICEROADSANDMUDDYROADSTARTEDANDTOIMPROVEITSCAPACITY,ALSOCANPREVENTHIGHINSPEEDBYTURNINGCARSGLIDINGPAVEMENTANDREARLATERALSPREADSPHENOMENONANYHOW,PREVENTTHEWHEELBECAUSEASRSLIP,CANMAXIMIZETHEENGINEDRIVINGMOMENTOFCARSHADENOUGH,ENSURETHELONGITUDINALFORCE,LATERALFORCEANDMANIPULATIONOFPOWER,MAKECARSINSTARTING,STEERINGANDACCELERATETHEPROCESS,INGLIDINGANDMUDDYROAD,INAMOUNTAINAREADOWNHILLPROCESSCANSTEADILYDRIVING,GUARANTEESTHESAFETY,REDUCINGTIREWEARANDFUELCONSUMPTION,ANDIMPROVESTHECARDRIVINGCAPABILITY3VDCSYSTEMABS/ASRSYSTEMSUCCESSFULLYSOLVESTHEBRAKEANDTHECARWHENDRIVENDIRECTIONSTABILITYPROBLEM,BUTCANNOTSOLVETHEVEHICLESTEERINGSTABILITYPROBLEMDRIVINGDIRECTIONFOREXAMPLEWHENSTEERINGROAD,INEVITABLYBYLATERALANDLONGITUDINALFORCE,ONLYLOCALSURFACECANPROVIDEFULLLATERALANDLONGITUDINALFORCE,THEPILOTCANCONTROLVEHICLESIFTHEGROUNDADHESIONABILITYLOWERLATERAL,WILLDAMAGECARSDRIVINGABILITYPREDETERMINEDDIRECTIONRAINYDAYSCARSDRIVING,OFTENHIGHSPEEDSTEERINGLATERALSLIDINGOUT,ITISTHEGROUNDBECAUSEOFINSUFFICIENTLATERALADHESIONABILITYTORESOLVETHEISSUE,ANDDEVELOPEDCOUNTRIESAUTOMOBILEINDUSTRYRECENTLYINABS/ASRSYSTEMONTHEBASISOFTHEDEVELOPMENTOFDYNAMICCONTROLSYSTEMINTOCARDYNAMICSCONTROL,THEABBREVIATIONVDCVEHICLETHESYSTEMOFTHECARBRAKE,DRIVING,SUSPENSION,STEERING,ENGINEANDSOONVARIOUSMAINASSEMBLYCONTROLSYSTEMINFUNCTION,STRUCTUREORGANICGROUNDCOMPREHENSIVETOGETHER,CANMAKECARSINALLKINDSOFBADWORKINGCONDITIONS,SUCHASICEROADPAVEMENT,COMMUTING,RIVERBENDPAVEMENTANDTOOKEVASIVEACTIONMOVINGLINE,BRAKINGANDACCELERATIONANDTHEDOWNHILLFORDIFFERENTCONDITIONS,SUCHASBEARING,DIFFERENTTYPEPRESSUREANDDIFFERENTLEVELSOFTYPEWEARALLHAVEGOODDIRECTIONSTABILITY,TOSHOWTHEBESTDRIVINGPERFORMANCEVDCAPPLICATIONS,INBRAKING,ACCELERATIONANDSTEERINGASPECTSOFDRIVERSFULLYRELEASEDREQUEST,ISTHECAROFACTIVESAFETYDRIVINGANEWMILESTONEVDCOFSTEERINGCONTROLSYSTEMISMAINLYBYDRIVINGFOREACHWHEELBRAKECONTROLANDENGINEPOWEROUTPUTCONTROLTOREALIZEFOREXAMPLE,IFTHECARTURNLEFTFRONTWHEELFORSTEERINGTHEINADEQUATECAPACITYTENDTOSLIPOUTOFTHECORNER,VDCSYSTEMCANMEASUREIMMINENT,JUSTKNOWLATERALSPREADSLEFTREARBRAKEADOPTAPPROPRIATEMEASURESIFATTHESAMECORNER,BECAUSEREARWHEELTENDTOSLIPOUTOFFAVOROFLATERALOVERMUCH,VDCSYSTEMISPROPERBRAKINGTOFRONTRIGHTWHEELFAILURE,MAINTAINTHESTABILITYOFTHEVEHICLEDRIVINGINEXTREMECASES,VDCSYSTEMCANALSOTAKEREDUCEENGINETOREDUCETHEPOWEROUTPUT,ANDTOREDUCETHESPEEDOFTHEDEMANDSIDEADHESIONABILITYTOMAINTAINTHESTABILITYOFTHEVEHICLEDRIVINGADOPTVDCSYSTEM,AUTOMOBILEINFOLIOPAVEMENTORCORNEROFPAVEMENTBRAKINGDISTANCESTILLCANFURTHERREDUCE4CCSCARSCRUISECONTROLSYSTEMAUTOCRUISECONTROLSYSTEMCRUISERCONTROLSYSTEM,ABBREVIATIONFORCCSISCANMAKEAUTOMOBILEWORKINENGINEFAVORABLESPEEDRANGE,REDUCEDRIVERSDRIVINGMANIPULATELABORINTENSITY,IMPROVETHEDRIVINGCOMFORTTHEAUTOMATICDRIVINGDEVICECARCRUISINGSYSTEMCCSROLEISREQUIREDBYTHEDRIVERAFTERANORMALLYCLOSEDSWITCH,NOSPEEDONTHEACCELERATORPEDALCANAUTOMATICALLYKEEPTHESPEED,MAKETHEVEHICLEWITHTHEFIXEDSPEEDUSINGTHISDEVICE,WHENONTHEHIGHWAYAFTERALONGTIME,THEDRIVERDRIVINGNOTHAVETOCONTROLTHEACCELERATORPEDAL,REDUCEFATIGUE,WHILEREDUCINGUNNECESSARYSPEEDCHANGE,CANREDUCESAVEFUELAUTOCRUISECONTROLSYSTEMISTHEEARLIESTDEVELOPMENTOFTHEAUTOMOTIVEELECTRONICCONTROLSYSTEMTHISSYSTEMUSESANOTHERSPEEDSENSOR,WILLSPEEDSIGNALINPUTENGINECONTROLMICROCOMPUTER,BYMICROCOMPUTERCONTROLVACUUMSYSTEMWORKTHISSYSTEMCANMAKEUSEOFTHESERVER,SPEEDCONTROLSWITCHLEVERANDBRAKEPEDALONVACUUMLIFTSWITCHESETC,ITSFUNCTIONANDBASICSYSTEMTHESAMEINTHISSYSTEM,ELECTRONICCONTROLDEVICECANACCORDCHANGEOFDRIVINGRESISTANCE,AUTOMATICREGULATIONENGINETHROTTLEANGLE,MAKETHESPEEDCONSTANTSUCHNOTONLYREDUCEUNNECESSARYSPEEDCHANGE,WHICHSAVESFUEL,ALSOREDUCEDTHEDRIVERSBURDENTHEELECTRONICCRUISECONTROLSYSTEMWHICHISSHOWNINFIGURE2TWOAUTOMOBILEPASSIVESAFETYTECHNOLOGY1SEATBELTCARSEATBELTISASAFETYDEVICE,ITCANINCARCOLLISIONORSHARPTURN,MAKECREWTOKEEPITSORIGINALPOSITIONASPOSSIBLEWITHOUTMOBILEANDROTATION,AVOIDCOLLISIONWITHINCARHARDPARTSCAUSEDDAMAGESEATBELTSANDAIRBAGS,ASMODERNCARSARESAFETYDEVICES,BUTTHELONGHISTORYOFTHEFORMER,POPULARIZETHESCOPETHESEEMINGLYSIMPLESEATBELTACTUALLYNOT“SIMPLE“ATTENTIONHASBEENATTHEFOREFRONTOFTRAFFICSAFETY,THROUGHTHEANALYSISOFGENERALMOTORSAFTERACARACCIDENTFOUNDSEATBELTNOTONLYMAKESPEOPLEPROTECTTHELIVES,CANBEINMORETHANHALFOFTHEACCIDENTTOREDUCEOREVENELIMINATEDRIVERS,MOTORISTSARETHECHANCEOFINJURYCARCOLLISIONORUNEXPECTEDEMERGENCYBRAKINGFORCEGENERATEDGREATINERTIA,WILLALLOWTHEDRIVERANDPASSENGERANDCARWINDSCREEN,STEERINGWHEEL,SEAT,COLLISIONHAPPENEDOBJECTSSUCHASSECONDARYTODRIVEISCAUSEDEXTREMELYEASILYCREWSERIOUSDAMAGE,EVENDRIVEOCCUPANTSEATSORTHREWTHEAPEX,SEATBELTSCANWILLRIDEINTHESEATBONDAGEPERSONNELWHENHASTHEACCIDENT,WHICHCANEFFECTIVELYPREVENTTHECOLLISION,ANDITSBUFFERROLECANABSORBSAGREATDEALOFKINETICENERGY,REDUCERIDESPERSONNELEXTENTOFTHEINJURIESFASTENYOURSEATBELTAIRBAGSPLAYOURROLEISALSOANIMPORTANTCONDITIONBECAUSETHEAIRBAGTOMAXIMIZEROLEFORTHERIDEINTHEIMPACTOFTHEPHYSICALLOCATION,SITTINGINSTANTACTIONHAVEEXTREMELYSTRICTANDTHEREQUIREMENTSOTHERWISE,THEAIRBAGSTARTEDSTRONGINSTANTANEOUSWALLOPSTOHEADAREFRAGILESITE,MAYCAUSESERIOUSDAMAGE,ESPECIALLYFORCHILDREN,THISDAMAGECANBEFATALEVENTHEMOSTORDINARYTHREEBELTS,TRYACANTIMELYINCRASHTHATLIVEDRIDESTHEBUNDLE,ENSURETHEUPPERPARTOFARIDEINTHEAIRBAGFULLYEXTENDEDRANGE,MAKETHEAIRBAGMOSTEFFECTIVELYPLAYEFFICACYACCORDINGLY,MUSTNOTBECAUSETHECARISEQUIPPEDWITHAIRBAGSANDFEELCAREFREESEATBELTFASTENED,ONLYTOREDUCEORELIMINATETHETRAFFICACCIDENTHAPPEN2THEAIRBAGWHENTHEFRONTCOLLISIONHAPPENEDSTRONG,BECAUSEINERTIA,WHORIDESTHEBODYFORWARDFASTMOVING,THENSEATBELTSANDWILLTRYTO“PULL“RIDESONPERSONTHEBODY,ABSORBSOMEOFTHEIMPACTENERGY,WHILETHEAIRBAGWITH“THEEYEPIECETREND“INFLATABLEANDCOMPLETELYOPENTHENTHERIDESTHEUPPERBODYWILLSINKTOAIRBAGS,GASALSOBEGANFROMTHEVENTAIRUNIFORMESCAPING,ANDABSORBEDMOSTOFTHEIMPACTENERGYSUBSEQUENTLY,THERIDEBACKSEATANDRETURNTOTHEBODYABOVETHEWHOLEPROCESSISALMOSTALWAYSHAPPENSINAFLASH,WHORIDESTHECOMPLETELYINP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