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 Wysłany: Nie 3:41, 08 Maj 2011 Temat postu: hollister Envelope spectrum based on wavelet coeff |
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Envelope spectrum based on wavelet coefficients of the rolling bearing fault diagnosis
2.4 g1.6l0 · B ... I-● ● -. . .... :. ... One. One hundred and eleven L:,,} h Phoenix 4-dimensional wavelet coefficients dynamic bearing inner ring failure envelope spectrum when there is local damage of the rolling element bearing failure,[link widoczny dla zalogowanych], the wavelet coefficients of the envelope spectrum shown in Figure 5, can be seen from Figure 5 that, when there is failure of rolling element bearings, the wavelet coefficients envelope of the frequency spectrum of rotation in the rolling (63.1H) and cage rotation frequency _, (9.7Hz) at the apparent spectral analysis of test results from the above conclusions can be using wavelet analysis to fault of rolling bearing at all ● 00000B642u, grass cents ● 1 Zhang Zhongmin, etc.: Based on the small envelope spectrum transition coefficient of rolling bearing fault diagnosis 6g5 · 64.8 base 1.6 '● ● ● ● ... 00 .... . . * *. J. *. . . . ●. . *. . , 050100150200250300350 Figure 5, bearing a small cross coefficient of the rolling element fault envelope spectrum is decomposed wavelet space,[link widoczny dla zalogowanych], and then the small ferry to the small space, including spectrum analysis of transition coefficients can effectively identify the bearing failure mode. Reference 1D ¨ bechiesI. Ten1ectureSOnwavelets. Philadelphia: SocietyforIndustrialandAppliedMathematics'19922NewIarldDE. Waveletanalysiaofvibration. part1; theory. JournalofVibrtalonandAcousticst1994; 116 (10) :409-4163New1andDE. Wave1etanalysiaofvibration, part2: waveletmaps. JournMVibrationandAcoustics, 1994; 116 (10) :417 - 4254Ma1IatS. Atheorvf0rmulti. resolutiondecomposition,[link widoczny dla zalogowanych], thewaveletrepresentation. IEEETrans. P. A. M. I. ,[link widoczny dla zalogowanych], 1989'11 (7): 67o, - 689ApplicationoftheEnvelopeSpectrumofWaveletCoefficientstoFaultDiagnosisinRollerBearingZhangZhongminLuWenxiangYangShuzi (HuazhongUniversityofScienceandTechnologyWuhan, 430074) ZhangYingtangZhangPeilinZhengHaiqi (OrdnanceEngineeringCollegeShijiazhuang, 050003) AbstractThepaperpresentsawamethodforfaultdiagnosisinrollerbearing. Theor ~ hogonalbasesofwavelet8reusedtOtranslatevibrationsignalofrollerbearingintotime-scalerepresen-tation. Bymakinganenvelopespectrumanalysisofwaveletcoefficientsofhighscales, whichrepresenthighfrequencysignal, thefaultinrollerbearingcanbedetectedandfaultpatterncanbeidentifiedvalidly. Keywords: rollerbearing; faultdiagnosis; wavelettransform ~ envelopesprectrum Zhang Zhongmin the first of the male,[link widoczny dla zalogowanych], lecturer t1969 students in January.
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