GMW 14227-2005 Operating Data Acquisition Master Test Procedure

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1、WORLDWIDETestProcedureENGINEERINGGMW14227NoiseandVibrationSTANDARDSOperatingDataAcquisitionMasterTestProcedure3.1.1.1Hemi-anechoicchamber(cartestroom1Scopeandchassisdynorooms).Theambientback-groundnoiselevelsmeasuredinsidetheroomNote:Nothinginthespecificationsupersedesap-s

2、hallbelessthanNC-15soundpressurelevelsplicablelawsandregulationsunlessspecificex-(NC-20forchassisdynorooms).Inaddition,theemptionhasbeenobtained.ambientbackgroundnoiselevelsmeasuredshallNote:IntheeventofconflictbetweentheEnglishmeetthefollowingcriteria:anddomesticlanguage,

3、theEnglishlanguageshall3.1.1.1.110dBlowerthanthelowestnoiselevel(s)takeprecedence.ofinterest.1.1Purpose.Toprovideguidelinesforsettingup3.1.1.1.2Shallbenogreaterthan40dB,andshallandacquiringoperatingdatafornoiseandvibra-facitateP/Fcoherencevaluesofatleast0.95atalltionevalua

4、tionprocedures.P/Fmaximainthefrequencyrangeofinterest.1.2Foreword.Operatingdataprovidesameans3.1.1.2Bedplate/Testroom.Thebedplate/testthroughwhichthenoiseandvibrationcharacteris-roomfacilitymaybeanyinteriorenvironmentwithticscanbedetermined.ahardlevelsurfacetomountthetestp

5、ieceand1.3Applicability.Thistestprocedureisappropri-testequipmentwithbackgroundvibrationlevelsatefortheevaluationofallsubsystems,compo-thatfacilitatecoherencevaluesgreaterthan0.95nents,andvehicles.atallFRFmaximaoverthefrequencyrangeofin-terest.2References3.2Equipment.Note:

6、Onlythelatestapprovedstandardsareap-3.2.1TestEquipment.AppendixAcontainsmoreplicableunlessotherwisespecified.detailedinformationregardingacquisitionsystem2.1ExternalStandards/Specifications.requirementsandtransducerexamples.None3.2.1.1DataAcquisitionSystem.Anacquisitionsys

7、temwithoneormoredataacquisitionchannels2.2GMStandards/Specifications.shallbeused.GMW14172OC-02-030-A3.2.1.2MeasurementTools.Accelerometers,mi-crophones,oranyotherappropriatetransducerfor3Resourcesaresponsemeasurement.3.1Facilities.Facilityrequirementsmayvaryde-3.2.1.3Misce

8、llaneous.Equipmentincludingbutpendingonthetypeoftestsetup.Forexample,anotlimitedto:approp