A New Cepstral Analysis Procedure of Recovering Excitations for Transient Components of Vibration Signals and Applications to Rotating Machinery Condition Monitoring

Zheng, G T and Wang, W J (2001) A New Cepstral Analysis Procedure of Recovering Excitations for Transient Components of Vibration Signals and Applications to Rotating Machinery Condition Monitoring. Journal of Vibration and Acoustics, 123 (2). pp. 222-229. ISSN 0888-3270

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Abstract

A new cepstral analysis procedure with the complex cepstrum for recovering excitations causing multiple transient signal components from vibration signals, especially from rotor vibration signals, has been developed. Along with the problem of singularity, a major problem of the cepstrum is that it cannot provide a correct distribution of the excitations. To solve these problems, a signal preprocessing method, whose function is to provide a definition for the distribution of the excitations along the quefrency axis and remove singular points from the transform, has been added to the cepstrum analysis. With this procedure, a correct distribution of the excitations can be obtained. An example of application to the condition monitoring of rotor machinery is also presented.

Item Type: Article
Additional Information: For rotating machinery condition monitoring, this paper reports a new cepstral analysis procedure for recovering excitations causing multiple transient components in vibration signals. A signal pre-processing method is proposed to provide a definition of excitation distribution along quefrency axis, and help to obtain the distribution. Example of application for diagnosing rotating machinery is also presented. W.J. Wang (w.j.wang@sussex.ac.uk) was the supervisor of the first author G.T.Zheng (gtzhengtu@yahoo.co.uk ) during his UK academic visit, and contributed in technical details.
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: William Wang
Date Deposited: 06 Feb 2012 21:22
Last Modified: 03 Apr 2012 08:47
URI: http://sro.sussex.ac.uk/id/eprint/30947
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