The impulses in vibration signals and their spectral features are important in diagnosing localized damage of gears.A new method,so called time-wavelet energy spectrum,was proposed for gear fault diagnosis.It could extract the features of impulses in both time domain and frequency domain.It was used to analyze the vibration signals of a gearbox under normal,worn and tooth broken statuses.The comparison between the proposed method and the traditional spectral analysis showed that the time-wavelet energy spec...
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