ISO 04138-2021.docx

INTERNATIONA1.STANDARDISO4138editionFifth202109Passengercars-Steady-statecircu1.ardrivingbehaviourOpen-1.ooptestmethodsVoituresPQrtiCUIiereSTenuederouteenregimepermanentsurIrajectoireCircu1.aireMethodesd'essaienbouc1.eoverteO1.SO2021COPYRIGHTPROTECTEDDOCUMENT©ISO2021岫rkdea/山thUcdOthcnviscjft<c三orrtmcehDVBiwixuioiti08phnn11UatiocBhr<1.>hotoc<>p)Mng,ptbcatonpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanherequestedfromeitherISOattheaddressbe1.oworIS<smemberbodyinthecountryoftherequester.%,tft晒Iandonnet8CH-1214*crnicr,GenevaPhone：M1.22749O1.11Pub1.ishedinSwitzerhnd©ISO2021-A1.1.rightsreservedContentsForewordivIntroduction.VScope123Normativereferences.1Termsanddefinitions14Princip1.ei1.1C4.2Equiva1.enceoftestmethods.2OVariab1.es25.1Referencesysteni.25.2Measurement2OMeasuringequipment36.1Description.一.36.2Transducerinsta1.1.ation37Testconditions38Testprocedure448.2Initia1.drivingcondition48.3Genera1.testdescription48.4Method1Constantradius8.4.1Descrintion458.5steering-whee1.ang1.e558.6Method3-ConstantspeedG9hDataana1.ysis_79.1Genera1.79.21.atera1.acce1.eration.710Dataeva1.uationandpresentationofresu1.ts8101GenPm1.810.2P1.ottedresuks(Seea1.soAnnexA)810.3I1.ksiiiationGifiiiroiactensticva1.ues10.3.2Eva1.uationofgradientsDifferentiation910.3.3Nonna1.izationofresu1.tsComparisonofresu1.tsfromdifferentvehic1.es.10Inq4Nnrmn1.izpdqfpadv-wtagnrn11prtip:11AnnexAnormative】Prcscntstionofresu1.ts13AnnexB(normative)Determinationofovera1.1.(static)steeringratio19AnnexC(informative)Genera1.informationTheoretica1.basisforthetestmethods_.20Bib1.iography.21ForewordISO(theInternationa1.OrganizationforStandardization)isawor1.dwidefederationofnationa1.standardsttiugh(ISOmrtmiw)bMd>niK盟RAucekdHpfff1.QbbGgbodyIcommitteehasbeenestab1.ishedhastherighttoberepresentedonthatcommittee.Internationa1.organizations,governmenta1.andnon-governmenta1.,in1.iaisonwithISO,a1.sotakepartinthework.ISOco1.1.aboratesc1.ose1.ywiththee1.ectrotechnica1.standardization.Internationa1.E1.ectrotechnica1.Commission(IEC)ona1.1.mattersofTheproceduresusedtodeve1.opthisdocumentandthoseintendedforitsfurthermaintenanceare狐£陶岫1搬of1.SOIEC(M1.糖n。慨做恪亦前嘛%M&琪M拓ifer%cordancetheeditoria1.ru1.esoftheISO/IECDirectives.Part2(seewww.iso.org/direc1.ives).时歌ionrightsd般掂出1n隔嗯琳娜ns仲(f神出飘冲做用州出doc1.三r强心创1.subjectofanypatentrightsidentifiedduringthedeve1.opmentofthedocumentwi1.1.beintheIntroductionand/orontheISO1.istofpatentdec1.arationsreceived(seewww.iso.org/pa1.ents).Anytradeusedinthisconstitutenameendorsement,documentisinformationgivenfortheconvenienceofusersanddoesnotForanexp1.anationofthevo1.untarynatureofstandards,themeaningofISOspecifictermsand黑盛显眼e(用辅tionc。的福P奥爽融Mthe可舐部潴陶温福ticn1盘件器厚吗糕?盘?iso/foreword.hun1.ThisdynamicsandchassisbyTechnica1.IZehfcZedocumentwaspreparedcomponenfs.CommitteeISO/TC22,Roadvehic1.es,SubcommitteeSC33.Thisfiftheditioncance1.sandrep1.acesthefourthedition(ISO4138:2012),whichhasbeentechnica1.1.yrevised.Themainchangescomparedtothepreriouseditionareasfo1.1.ows:editoria1.changes,athirdvariationoftheconstantspeedtestmethodwasadded.Thisvariationinvo1.vess1.ow1.yincreasingthesteering-whee1.ang1.e.©ISO2021-A1.1.rightsreservedIntroductionvehic1.e,dynamicbehaviourofdriverVehideprevai1.ingenvironment,aspectconstitutesac1.osed-1.oopsystemgivennumberaccuratedescriptionofthebehaviouroftheroadvehic1.einvo1.vesinformationobtainedfromaovera1.1.dynamicbehaviour.canon1.ybeconsideredsignificantforacorresponding1.ysma1.1.partofthesufficientpropertiesandaccidentCorrc1.ationsubstantia1.accidentavoidancenecessarytodynamicstatistics.021-AHrightsresenedThemainPUrPOSeofthisdocumentistoproviderepeatab1.eanddiscriminatorytestresu1.ts.Thetogetherwithitsaroadandtheisver>rimportantofactivevehic1.esafety.Anythatisunique.Thetaskofeva1.uatingthedynamicbehaviouris,therefore,verydifficu1.tsincethesignificantinteractionsofthesedriver-vehic1.e-environmente1.ementsareeachcomp1.exinthemse1.ves.Acomp1.eteandofdifferenttests.Sincethistestmethodquantifieson1.yonesma1.1.partofthecomp1.etevehic1.ehand1.ingcharacteristics,theresu1.tsofthesetestsMoreover,insuf11cientknow1.edgeisavai1.ab1.econcerningthere1.ationshipbetweenovera1.1.vehic1.edynamicandre1.iab1.eontheavoidance.Abetweenamountofworkisandvehic1.eacquirepropertiesingenera1.andtheresu1.tsofthesetestsinparticu1.ar.Consequent1.y,anyapp1.icationofthistestmethodforregu1.ationpurposeswi1.1.needprove