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英文文献翻译专业班级：自动化06-02学生姓名：何兴学号：060410210二〇年月日InFebruary1986,RobertBoschinSAE(SocietyofAutomotiveEngineers)GeneralAssemblyintroducedanewtypeofserialbus-CANControllerAreaNetwork,itistimeforthebirthofCAN.Today,almosteveryoneinEurope,newpassengercarsareequippedwithCANLAN.Similarly,CANisalsousedforothertypesofvehicles,fromtrainstoshipsorforindustrialcontrol.CANhasbecomeaworldwideoneofthemostimportantofthebus-orevenleadingtheserialbus.In1999,nearly610millionCANcontrollerintoused.In2000,marketsalesofmorethan100millionCANdevice.Earlierin1980,Boschengineersbegantodemonstrateatthetimeserialbususedforpassengercarsystemisfeasible.Becausethereisnoready-madenetworksolutioncanfullymeettherequirementsofautomotiveengineers,then,inearly1983,UweKienckestartofanewserialbus.Themaindirectionofthenewbustoaddnewfeaturestoreducetheelectricalcablesothatitcanbeusedforproducts,ratherthantodrivetechnology.Mercedes-Benzengineersfromtheearlydevelopmentofthestateofthebusdescription,andIntelisalsopreparingforamajormanufacturerofsemiconductorproduction.OneconsultantwashiredfromGermany,Braunschweig-WolfenbüttelUniversityofAppliedScience,ProfessorDr.WolfhardLawrenzgiventhenameofthenewnetworkprogramControllerAreaNetwork,referredtoasCAN.FromKarlsruheUniversity,ProfessorDr.HorstWettsteinprovidestheoreticalsupport.February1986,CANwasborn.IntheDetroitSocietyofAutomotiveEngineersCongress,fromBoschtostudythenewbussystemknownasthecarsSerialControllerAreaNetwork.UweKiencke,SiegfriedDaisandMartinLitschelintroducedtheprogramofthemulti-masternetwork.Thisprogramisbasedonnon-destructivearbitrationmechanism,toensurehigh-prioritypacketdelay-freetransmission.Also,donotneedtosetthebusmastercontroller.Inaddition,CANFather-thefewprofessorsandBosch'sWolfgangBorst,WolfgangBotzenhard,OttoKarl,HelmutSchelling,JanUnruhhaveachievedanumberofspeciesintheerrordetectionmechanismsinCAN?Theerrordetectionbutalsofaultnodeautomaticallydisconnectfeaturetoensurecontinuedcommunicationbetweentheremainingnodes.Transmissionofmessagesnotbasedonpackettransmitter/receivernodeaddressidentification(almosttruefortheotherbus),butbythecontentpacketidentification.Meanwhile,theidentifierusedtoidentifythemessagealsoprovidesthepacketisthepriorityinthesystem.Whenthisinnovativecommunicationsolutiononthemajorityoftextinplace,themid-1987,IntelplanstwomonthsaheadofdeliveryofitsfirstCANcontroller:82526,thisisthefirsttimeCANhardwareimplementationoftheprogram.Injustfouryearstime,visionbecomesareality.Soonafter,PhilipsSemiconductorsintroducedthe82C200.ThisisthefirstoftwoCANcontrolleracceptancefilteringandmessagecontrol,therearemanydifferent.Ontheonehand,themainpushofFullCANIntelPhilipsLordthanbypushingBasicCANtakeslessCPUload;theotherhand,FullCANdevicecanreceivearelativelylimitednumberofmessages,BasicCANcontrollerrequireslesssilicon.Today'sCANcontrollers,thegrandchildrengenerationareinthesamemoduleacceptancefilteringandmessagecontrol,therearestillconsiderabledifferences,tocreateaBasicCANandFullCANcamps.Standardizationandconsistencyinearly1990,BoschCANstandard(CAN2.0version)wassubmittedtotheInternationalOrganizationforStandardization.Inanumberofadministrativediscussion,shouldsomeofthemajordemandsoftheFrenchautomobilemanufacturerstoincreasetheVehicleAreaNetwork(VAN)content,andwaspublishedinNovember1993CANinternationalstandardISO11898.InadditiontoCANagreement,italsoprovidesupto1Mbpsbaudrateofthephysicallayer.Meanwhile,theinternationalstandardISO11519-2alsoprovidesfault-tolerantCANdatatransmissionmethod.In1995,theinternationalstandardISO11898wasextendedtotheformdescribedinAppendix29CANidentifiers.Butsadly,allpublishedintheCANspecificationcontainerrorsorincomplete.Therefore,inordertoavoidincompatibleCANapplications,BoschCANchip,thecompanyhasbeencarryingoutverificationwhetherthereferencemodelbasedonBosch'sCANworkpiece.Inaddition,inrecentyearsundertheleadershipofProfessorinLawrenz,inGermanyBraunschweig/WolfenbüttelUniversityofAppliedScienceCANconformancetesting,testmodelisbasedoninternationalstandards,teststandardsISO16845.Currently,amendmentsarebeingstandardizedintheCANspecification.ISO11898-1asCANdatalinklayer,ISO11898-2asnon-fault-tolerantCANphysicallayer,ISO11898-3knownasfault-tolerantCANphysicallayer.InternationalstandardISO11992(truckandtrailerinterface)andISO11783(agricultureandforestrymachinery)arestandardintheUnitedStatesbasedontheJ1939CAN-basedapplicationofthedefinitionofsub-agreements,buttheyarenotcomplete.AlthoughithadbeenapioneerinthedevelopmentofCAN，CANstartingpointforresearchisappliedtobussystems,butthefirstmarketapplicationofCANbutfromotherareas.ParticularlyinNorthernEurope,CANhaslongbeenaverypopularapplication.IntheNetherlands,theelevatormanufacturerKoneusingCANbus.KvaserSwissEngineeringOfficehasproposedtoapplytoanumberoftextile-CAN(LindauerDornierandSulzer),byprovidingthemwithmachineprotocol.Thisarea,intheleadershipofLars-BernoFredriksson,thecompanyestablishedaCANTextileMachineryusergroup.By1989,theyhaddevelopedcommunicationtheory,andinearly1990tohelpbuildCANKingdomdevelopmentenvironment.Althou