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- W2372012092 abstract "When a gear has a local fault,the vibration signal of the gearbox may contain both amplitude and phase modulation,its spectrum contains meshing frequencies components their harmonics,and coupling frequencies components generated by modulation.The Hilbert transform(HT) has been shown to be useful for demodulation.However,it has not enough frequency resolution for visual inspection.Therefore,the method of multiple modulation zoom spectrum analysis(ZFFT) was proposed.A gearbox dynamics simulator was used to collecte steady-state vibration signals of gear in normal,mild wear and severe wear conditions,extract the envelope signals using the Hilbert transform and then analyze the envelope signals using ZFFT in order to gain the amplitudes of fundamental component of modulating signals and their harmonics.The results show that:with the increase of gear wear,the amplitudes of gear shaft rotating frequency component and its harmonics increase significantly and can be used as the fault characteristic parameters of gear wear." @default.
- W2372012092 created "2016-06-24" @default.
- W2372012092 creator A5001383559 @default.
- W2372012092 date "2013-01-01" @default.
- W2372012092 modified "2023-09-23" @default.
- W2372012092 title "Gearbox fault detection using Hilbert transform and ZFFT" @default.
- W2372012092 hasPublicationYear "2013" @default.
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