Noise and Vibration Analysis Signal analysis and experimental procedures.pdf

Noise and Vibration Analysis Signal analysis and experimental procedures.pdf

《Noise and Vibration Analysis Signal analysis and experimental procedures.pdf》由会员分享，可在线阅读，更多相关《Noise and Vibration Analysis Signal analysis and experimental procedures.pdf（445页珍藏版）》请在冰豆网上搜索。

P1:

TIX/SPHP2:

TIXfmJWST035-BrandtDecember8,20109:

10PrinterName:

YettoComeNOISEANDVIBRATIONANALYSISNoiseandVibrationAnalysis:

SignalAnalysisandExperimentalProceduresAndersBrandt2010JohnWiley&Sons,Ltd.ISBN:

978-0-470-74644-8P1:

TIX/SPHP2:

TIXfmJWST035-BrandtDecember8,20109:

10PrinterName:

YettoComeNOISEANDVIBRATIONANALYSISSIGNALANALYSISANDEXPERIMENTALPROCEDURESAndersBrandtDepartmentofIndustrialandCivilEngineeringUniversityofSouthernDenmarkAJohnWileyandSons,Ltd.,PublicationP1:

TIX/SPHP2:

TIXfmJWST035-BrandtDecember8,20109:

10PrinterName:

YettoComeThiseditionfirstpublished2011C?

2011,JohnWiley&Sons,LtdRegisteredofficeJohnWiley&SonsLtd,TheAtrium,SouthernGate,Chichester,WestSussex,PO198SQ,UnitedKingdomFordetailsofourglobaleditorialoffices,forcustomerservicesandforinformationabouthowtoapplyforpermissiontoreusethecopyrightmaterialinthisbookpleaseseeourwebsiteat.TherightoftheauthortobeidentifiedastheauthorofthisworkhasbeenassertedinaccordancewiththeCopyright,DesignsandPatentsAct1988.Allrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystem,ortransmitted,inanyformorbyanymeans,electronic,mechanical,photocopying,recordingorotherwise,exceptaspermittedbytheUKCopyright,DesignsandPatentsAct1988,withoutthepriorpermissionofthepublisher.Wileyalsopublishesitsbooksinavarietyofelectronicformats.Somecontentthatappearsinprintmaynotbeavailableinelectronicbooks.Designationsusedbycompaniestodistinguishtheirproductsareoftenclaimedastrademarks.Allbrandnamesandproductnamesusedinthisbookaretradenames,servicemarks,trademarksorregisteredtrademarksoftheirrespectiveowners.Thepublisherisnotassociatedwithanyproductorvendormentionedinthisbook.Thispublicationisdesignedtoprovideaccurateandauthoritativeinformationinregardtothesubjectmattercovered.Itissoldontheunderstandingthatthepublisherisnotengagedinrenderingprofessionalservices.Ifprofessionaladviceorotherexpertassistanceisrequired,theservicesofacompetentprofessionalshouldbesought.MATLABR?

isatrademarkofTheMathWorks,Inc.andisusedwithpermission.TheMathWorksdoesnotwarranttheaccuracyofthetextorexercisesinthisbook.ThisbooksuseordiscussionofMATLABR?

softwareorrelatedproductsdoesnotconstituteendorsementorsponsorshipbyTheMathWorksofaparticularpedagogicalapproachorparticularuseoftheMATLABR?

software.LibraryofCongressCataloguing-in-PublicationDataBrandt,Anders.Noiseandvibrationanalysis:

signalanalysisandexperimentalprocedures/AndersBrandt.p.cm.Includesbibliographicalreferencesandindex.ISBN978-0-470-74644-8（hardback）1.VibrationMathematicalmodels.2.NoiseMathematicalmodels.3.Acousticalengineering.4.Stochasticanalysis.5.Signalprocessing.I.Title.TA355.B6742011620.3dc222010039788AcataloguerecordforthisbookisavailablefromtheBritishLibrary.PrintISBN:

9780470746448E-PDFISBN:

9780470978177O-BookISBN:

9780470978160E-PubISBN:

9780470978115Typesetin9/11ptTimesbyAptaraInc.,NewDelhi,India.P1:

TIX/SPHP2:

TIXfmJWST035-BrandtDecember8,20109:

10PrinterName:

YettoComeContentsAbouttheAuthorxvPrefacexviiAcknowledgementsxxiListofAbbreviationsxxiiiNotationxxv1Introduction11.1NoiseandVibration11.2NoiseandVibrationAnalysis21.3ApplicationAreas31.4AnalysisofNoiseandVibrations31.4.1ExperimentalAnalysis41.5Standards41.6BecomingaNoiseandVibrationAnalysisExpert41.6.1TheVirtueofSimulation41.6.2LearningToolsandtheFormatofthisBook52DynamicSignalsandSystems72.1Introduction72.2PeriodicSignals82.2.1SineWaves82.2.2ComplexSines102.2.3InteractingSines112.2.4OrthogonalityofSines122.3RandomSignals132.4TransientSignals142.5RMSValueandPower152.6LinearSystems162.6.1TheLaplaceTransform172.6.2TheTransferFunction202.6.3TheImpulseResponse212.6.4Convolution222.7TheContinuousFourierTransform252.7.1CharacteristicsoftheFourierTransform272.7.2TheFrequencyResponse29P1:

TIX/SPHP2:

TIXfmJWST035-BrandtDecember8,20109:

10PrinterName:

YettoComeviContents2.7.3RelationshipbetweentheLaplaceandFrequencyDomains292.7.4TransientversusSteady-stateResponse302.8ChapterSummary312.9Problems32References333TimeDataAnalysis353.1IntroductiontoDiscreteSignals353.2TheSamplingTheorem353.2.1Aliasing373.2.2DiscreteRepresentationofAnalogSignals383.2.3InterpolationandResampling403.3Filters423.3.1AnalogFilters433.3.2DigitalFilters453.3.3SmoothingFilters463.3.4AcousticOctaveFilters473.3.5AnalogRMSIntegration493.3.6FrequencyWeightingFilters493.4TimeSeriesAnalysis513.4.1Min-andMax-analysis513.4.2TimeDataIntegration513.4.3TimeDataDifferentiation553.4.4FFT-basedProcessing583.5ChapterSummary583.6Problems59References604StatisticsandRandomProcesses634.1IntroductiontotheUseofStatistics634.1.1EnsembleandTimeAverages644.1.2StationarityandErgodicity644.2RandomTheory654.2.1ExpectedValue654.2.2ErrorsinEstimates654.2.3ProbabilityDistribution664.2.4ProbabilityDensity664.2.5Histogram674.2.6SampleProbabilityDensityEstimate684.2.7AverageValueandVariance684.2.8CentralMoments704.2.9Skewness704.2.10Kurtosis704.2.11CrestFactor714.2.12CorrelationFunctions714.2.13TheGaussianProbabilityDistribution724.3StatisticalMethods744.3.1HypothesisTests744.3.2TestofNormality774.3.3TestofStationarity77P1:

TIX/SPHP2:

TIXfmJWST035-BrandtDecember8,20109:

10PrinterName:

YettoComeContentsvii4.4QualityAssessmentofMeasuredSignals814.5ChapterSummary844.6Problems85References865FundamentalMechanics875.1NewtonsLaws875.2TheSingleDegree-of-freedomSystem（SDOF）885.2.1TheTransferFunction885.2.2TheImpulseResponse895.2.3TheFrequencyResponse915.2.4TheQ-factor945.2.5SDOFForcedResponse955.3AlternativeQuantitiesforDescribingMotion955.4FrequencyResponsePlotFormats975.4.1MagnitudeandPhase975.4.2RealandImaginaryParts1005.4.3TheNyquistPlotImaginaryvs.RealPart1005.5DeterminingNaturalFrequencyandDamping1035.5.1PeakintheMagnitudeofFRF1035.5.2PeakintheImaginaryPartofFRF1035.5.3ResonanceBandwidth（3dBBandwidth）1045.5.4CircleintheNyquistPlot1045.6RotatingMass1045.7SomeCommentsonDamping1065.7.1HystereticDamping1065.8ModelsBasedonSDOFApproximations1075.8.1VibrationIsolation1075.8.2ResonanceFrequencyandStiffnessApproximations1105.9TheTwo-degree-of-freedomSystem（2DOF）1105.10TheTunedDamper1135.11ChapterSummary1155.12Problems115References1166ModalAnalysisTheory1196.1WavesonaString1196.2MatrixFormulations1206.2.1Degree-of-freedom1216.3EigenvaluesandEigenvectors1226.3.1UndampedSystem1226.3.2ModeShapeOrthogonality1256.3.3ModalCoordinates1276.3.4ProportionalDamping1286.3.5GeneralDamping1306.4FrequencyResponseofMDOFSystems1336.4.1FrequencyResponsefromM,C,K1336.4.2FrequencyResponsefromModalParameters1346.4.3FrequencyResponsefromM,K,andModalDamping1386.4.4ModeShapeScaling138P1:

TIX/SPHP2:

TIXfmJWST035-BrandtDecember8,20109:

10PrinterName:

YettoComeviiiContents6.4.5TheEffectofNodeLinesonFRFs1396.4.6Antiresonance1406.4.7ImpulseResponseofMDOFSystems1416.5TimeDomainSimulationofForcedResponse1416.6ChapterSummary1436.7Problems144References1457TransducersforNoiseandVibrationAnalysis1477.1ThePiezoelectricEffect1477.2TheChargeAmplifier1487.3TransducerswithBuilt-InImpedanceConverters,IEPE1497.3.1Low-frequencyCharacteristics1507.3.2High-frequencyCharacteristics1517.3.3TransducerElectronicDataSheet,TEDS1527.4ThePiezoelectricAccelerometer1527.4.1FrequencyCharacteristics1537.4.2MountingAccelerometers1557.4.3ElectricalNoise1557.4.4ChoosinganAccelerometer1557.5ThePiezoelectricForceTransducer1577.6TheImpedanceHead1587.7TheImpulseHammer1597.8AccelerometerCalibration1597.9MeasurementMicrophones1617.10MicrophoneCalibration1627.11ShakersforStructureExcitation1627.12SomeCommentsonMeasurementProcedures1637.13Problems164References1658FrequencyAnalysisTheory1678.1PeriodicSignalsTheFourierSeries1678.2SpectraofPeriodicSignals1698.2.1FrequencyandTime1708.3RandomProcesses1708.3.1SpectraofRandomProcesses1718.4TransientSignals1738.5Interpretationofspectra1738.6ChapterSummary1758.7Problems175References1769ExperimentalFrequencyAnalysis1779.1FrequencyAnalysisPrinciples1779.1.1NonparametricFrequencyAnalysis1789.2OctaveandThird-octaveBandSpectra1799.2.1TimeConstants1799.2.2Real-timeversusSerialMeasurements179P1:

TIX/SPHP2:

TIXfmJWST035-BrandtDecember8,20109:

10PrinterName:

YettoComeContentsix9.3TheDiscreteFourierTransform（DFT）1809.3.1TheFastFourierTransform,FFT1819.3.2TheDFTinShort1829.3.3TheBasisoftheDFT1839.3.4PeriodicityoftheDFT1839.3.5PropertiesoftheDFT1869.3.6RelationbetweenDFTandContinuousSpectrum1869.3.7Leakage1879.3.8ThePicket-fenceEffect1899.3.9TimeWindowsforPeriodicSignals1919.3.10TimeWindowsforRandomSignals1989.3.11OversamplinginFFTAnalysis1999.3.12CircularConvolutionandAliasing1999.3.13ZeroPadding2009.3.14ZoomFFT2019.4ChapterSummary2029.5Problems203References20410SpectrumandCorrelationEstimatesUsingtheDFT20510.1Averaging20510.2SpectrumEstimatorsforPeriodicSignals20610.2.1TheAutopowerSpectrum20710.2.2LinearSpectrum20810.2.3PhaseSpectrum20810.3EstimatorsforPSDandCSD20910.3.1ThePeriodogram20910.3.2WelchsMethod21110.3.3WindowCorrectionforWelchEstimates21110.3.4BiasErrorinWelchEstimates21210.3.5RandomErrorinWelchEstimates21710.3.6TheSmoothedPeriodogramEstimator22110.3.7BiasErrorinSmoothedPeriodogramEstimates22310.3.8RandomErrorinSmoothedPeriodogramEstimates22410.4EstimatorforCorrelationFunctions22410.5EstimatorsforTransientSignals22610.5.1WindowsforTransientSignals22710.6SpectrumEstimationinPractice22810.6.1LinearSpectrumVersusPSD22810.6.2ExampleofaSpectrumofaPeriodicSignal22910.6.3PracticalPSDEstimation23110.6.4