Value of Cepstrum Analysis and its Application in Gearbox Fault Diagnosis

A method for analyzing the value of cepstrum without taking the logarithm is proposed. The bottom of abscissa of cepstrum is cycle of power spectrum.Ordinate of the cepstrum can identify how many lines in the sideband of power spectrum without logarithmic.Application to fault diagnosis of the test bench and the gearbox is successfully, and thus significant results are achieved.