中英文文献翻译—汽车ABS技术及其发展趋势Word格式.docx
《中英文文献翻译—汽车ABS技术及其发展趋势Word格式.docx》由会员分享,可在线阅读,更多相关《中英文文献翻译—汽车ABS技术及其发展趋势Word格式.docx(10页珍藏版)》请在冰豆网上搜索。
![中英文文献翻译—汽车ABS技术及其发展趋势Word格式.docx](https://file1.bdocx.com/fileroot1/2022-10/1/02b8368c-9d8f-4624-90c0-8f0c1ebb7473/02b8368c-9d8f-4624-90c0-8f0c1ebb74731.gif)
@#@附 录@#@附录A.@#@CarABSTechnologyandDevelopmentTrend@#@Inthecarbeforetheemergenceofabs,usedcaristheopenloopbrakesystem.Itscharacteristic isthebraketorqueonlyanddriversofthesizeofthemanipulationoftheforce,brakingforcedistributionregulationandthesizeofthebrakesonandtype.Withnowheelthemotionoffeedbacksignalmeasurement,can'@#@tknowduringwheelbrakespeedandholdingindeath,caryoumayadjustaccordinglywheelcylinderorthegaschamberofthesizeofthebrakepressure.Soinanemergencybrake,inevitablyappearwheelontheground,holdingindeathdraggedthephenomenonofsliding.@#@Whenthewheellock,thegroundoftheperformancewaspoor,thelateralattachedcanprovidethelateraladhesionissmall,carbyexternalforceinanyminuteundertheactionofwillappeardirection,easilyhappenedinstabilityproblemsoftrafficaccidents.Inthewetpavementorsnowandiceontheroad,thedirectionofbraketheinstabilityofthephenomenoncanmoreserious.towingItisthroughthebasicfunctionofsensors'@#@wheeleachtransientstateofmotion,andaccordingtothemotioncorrespondinglyadjustthesizeofthebraketorqueintoavoidthewheelsholdingindeath,itisaphenomenonofclosed-loopbrakesystem.@#@Itistheelectroniccontroltechnologyincarsofthemostsuccessfulapplicationproject,oneofautobrakeantilockbrakesystemscanmakethecarinthebrakingmaintainstabilityandshortenthedirectionbrakingdistance,effectivelyimprovethedrivingsafety.@#@CarABScansayisthemostimportantcarsafetyhistoryofthethreegreatinventions(theothertwoareairbagwithseatbelt),@#@ABSisalsoothersafetydevice(suchasESPdrivingdynamicstabilitysystemandEBDbrakingforcesbaseddistributionsystem)Becausemoneyspenttoobig,ABSthepracticaluseoftheearlyrailwayvehicleoraircraft.70s,digitalelectronictechnologyandlargescaleintegratedcircuit,fortherapiddevelopmentofABSsystemlaysafoundationtopracticalapplication.Boschcompanyin1978firstlaunchedthedigitalelectroniccontrolunitofthebrakesystem,andABS2Boschholdingdevicein theMercedesBenz,whichopenedonthemodernABSsystemdevelopmentsequence@#@AlthoughtheBoschABS2ofelectroniccontroldeviceisaseparationofthecomponents,butduetothedigitalelectroniccontroldeviceandanalogelectroniccontroldevice,thereactionspeed,comparedtothecontrolaccuracyandreliabilityaresignificantlyimproved,therefore,BoschABS2controleffectalreadyisquitegood.Fromthenon,Europe,AmericaandJapan,manyprofessionalcompanyandbrakecarcompanieshavedevelopedavarietyofABSsystem.Accordingtostatistics,thewholeworldhasmorethan60%ofnewcarsequippedwithABSdevice.@#@Whenthecarbrakewheelspeedandthedifferencesbetweenbodyspeed,canleadtothewheelandtheroad,whenthewheelslippagebetweenproducepurerollingwayandthepavementatcontact,thesliprateiszero,andwheellockthesliprateis100%.Whentheslipratebetween10%~30%,thelargesttransferofpower.Thebasicprincipleofbrakingantilockbrakesystem(2,3]isbasedontheaboveresearch,throughthecontrolregulationsysteminpower,brakingprocess,tothewheelintheslipratecontrol,withinthescopeoftherighttoobtainthebestbrakingeffect.ABSsystemhardwaremainlybythewheelsensor,electroniccontroldevices,brakepressureregulatorthreemajorcomponents,constituteatothesliprateisthecontrolofthetargetoftheclosed-loopcontrolsystem.Thewheelspeedsensorandthedatatransfertotheelectroniccontroldevice.Controldeviceisamicroprocessor,accordingtothewheelspeedsensorsignaltocalculatethespeedofthecar.Inthebrakingprocess,reducingspeedandcontroldeviceofprogrammedidealreducingthespeedofcharacteristiccurveincomparison.Ifcontroldevicejudgethewheelreducingspeedtoolargeandthewheelwillembracedied,signaltohydraulicregulator,hydraulicregulatorisaccordingtothecontroldeviceofthesignaltothebrakewheelcylinderofhydrauliccontrol(theboost,thepressureorbloodpressure).Brakepressuretoadjustthefrequencyofthecycleupto6~20Hz.ABStechnologyatthecoreoftheproblemisthecontrolalgorithmofresearch.ThecontrolcarABSisacomplex,essentialnonlinearcontrolproblem.Inrecent years,domesticandforeignscholarsinthecontrolofABScalculate@#@Methodonthemanytheoreticalresearch,mainlyinthefollowingseveralcontrol@#@methods.NowautomotiveABSsystemmostoftheproductsaretheaddition,subtractionspeedcontrol,andadditionalthresholdsomeauxiliarythreshold,notinvolvespecificmathematicalmodel.Thresholdcontrolfornonlinearsystemsisaneffectivecontrolmethod.Inthebrakingprocess,canbeaprimaryangularvelocitythreshold,whenactual@#@a