TheHHTtime-frequencypowerspectrumanalysisof

theblastingvibrationsigna

GUAN Xiao-lei; YAN Jing-long

doi:10.11883/1001-1455(2012)05-0535-07

Volume 32 Issue 5

Apr. 2014

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GUAN Xiao-lei, YAN Jing-long. TheHHTtime-frequencypowerspectrumanalysisoftheblastingvibrationsigna[J]. Explosion And Shock Waves, 2012, 32(5): 535-541. doi: 10.11883/1001-1455(2012)05-0535-07

Citation:

GUAN Xiao-lei, YAN Jing-long. TheHHTtime-frequencypowerspectrumanalysisof theblastingvibrationsigna[J]. Explosion And Shock Waves, 2012, 32(5): 535-541. doi: 10.11883/1001-1455(2012)05-0535-07

GUAN Xiao-lei, YAN Jing-long. TheHHTtime-frequencypowerspectrumanalysisoftheblastingvibrationsigna[J]. Explosion And Shock Waves, 2012, 32(5): 535-541. doi: 10.11883/1001-1455(2012)05-0535-07

Citation:

GUAN Xiao-lei, YAN Jing-long. TheHHTtime-frequencypowerspectrumanalysisof theblastingvibrationsigna[J]. Explosion And Shock Waves, 2012, 32(5): 535-541. doi: 10.11883/1001-1455(2012)05-0535-07

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TheHHTtime-frequencypowerspectrumanalysisof theblastingvibrationsigna

doi: 10.11883/1001-1455(2012)05-0535-07

GUAN Xiao-lei^,,
YAN Jing-long

1.
NationalKeyLaboratoryofElectronicMeasurementTechnology,
2.
NorthUniversityofChina,Taiyuan030051,Shanxi,China;

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Corresponding author: GUAN Xiao-lei
Publish Date: 2012-09-25

Abstract

Abstract

Theshort-timeFouriertransformcannotmeetthedifferentrequirementsofthehighand lowfrequencychangesofsignalandthewavelettransformcanbelimitedbythewaveletbaseweselect. Therefore,weuse HHTtoanalysetheblastingvibrationsignalthroughthetime-frequency powerspectrum.IntheEMD,weusethesymmetricextendingofextremepointtoeliminatethe effectofendpoint.WeusethepiecewisecubicHermiteinterpolatingtoeliminatethephenomenondue totheenvelope,andadoptthelocalcriterionofsiftingtermination.Fortheproblemofnegativepeak incalculatingtheinstantaneousfrequencyinthetraditionalHilberttransform,weadoptthenormalizedHilbertandthedirectquadraturemethodtosolve. InalltheHHTanalysis,weusetheLabView platformtoachievewhichcanimprovecomputingefficiencyandpracticality,andweprovethatHHT isusefulfortheanalysisoftheblastingvibrationsignal.
- vibrationandwaves,
- time-frequencypowerspectrum,
- Hilbert-Huangtransform,
- blasting vibrationsignal,
- empiricalmodedecomposition

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