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Theoretical and experimental analysis of bispectrum of vibration signals for fault diagnosis of gears

Theoretical and experimental analysis of bispectrum of vibration signals for fault diagnosis of gears
Theoretical and experimental analysis of bispectrum of vibration signals for fault diagnosis of gears
Condition monitoring and fault diagnosis is an important issue for gearbox maintenance and safety. The critical process involved in such activities is to extract reliable features representative of the condition of the gears or gearbox.In this paper a framework is presented for the
application of bispectrum to the analysis of gearbox vibration. The bispectrum of a composite signal consisting of multiple periodic components has peaks at the bifrequencies that correspond to closely related components which can be produced by any nonlinearity. As a
result, biphase verification is necessary to decrease false-alarming for any bispectrum-based method.A model based on modulated signals is adopted to reveal the bispectrum characteristics for the vibration of a faulty gear,and the corresponding amplitude and phase of the bispectrum expression are deduced. Therefore,a diagnostic approach based on the theoretical result is derived and verified by the analysis of a set of vibration signals from a helicopter gearbox.
0888-3270
76-89
Guoji, Shen
000b1ae6-aa3b-4b0a-b658-4a2709caa3cc
McLaughlin, Stephen
7bf77a44-aeeb-468f-ba15-a3aa53241f91
Yongchen, Xu
afa20232-3738-401e-bf53-382187bf0d4d
White, Paul R.
2dd2477b-5aa9-42e2-9d19-0806d994eaba
Guoji, Shen
000b1ae6-aa3b-4b0a-b658-4a2709caa3cc
McLaughlin, Stephen
7bf77a44-aeeb-468f-ba15-a3aa53241f91
Yongchen, Xu
afa20232-3738-401e-bf53-382187bf0d4d
White, Paul R.
2dd2477b-5aa9-42e2-9d19-0806d994eaba

Guoji, Shen, McLaughlin, Stephen, Yongchen, Xu and White, Paul R. (2014) Theoretical and experimental analysis of bispectrum of vibration signals for fault diagnosis of gears. Mechanical Systems and Signal Processing, 43 (1-2), 76-89. (doi:10.1016/j.ymssp.2013.08.023).

Record type: Article

Abstract

Condition monitoring and fault diagnosis is an important issue for gearbox maintenance and safety. The critical process involved in such activities is to extract reliable features representative of the condition of the gears or gearbox.In this paper a framework is presented for the
application of bispectrum to the analysis of gearbox vibration. The bispectrum of a composite signal consisting of multiple periodic components has peaks at the bifrequencies that correspond to closely related components which can be produced by any nonlinearity. As a
result, biphase verification is necessary to decrease false-alarming for any bispectrum-based method.A model based on modulated signals is adopted to reveal the bispectrum characteristics for the vibration of a faulty gear,and the corresponding amplitude and phase of the bispectrum expression are deduced. Therefore,a diagnostic approach based on the theoretical result is derived and verified by the analysis of a set of vibration signals from a helicopter gearbox.

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Published date: February 2014
Organisations: Signal Processing & Control Grp

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Local EPrints ID: 360926
URI: http://eprints.soton.ac.uk/id/eprint/360926
ISSN: 0888-3270
PURE UUID: 8e73454c-c49f-456f-a09f-56dada471132
ORCID for Paul R. White: ORCID iD orcid.org/0000-0002-4787-8713

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Date deposited: 09 Jan 2014 11:12
Last modified: 12 Jul 2024 01:33

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Contributors

Author: Shen Guoji
Author: Stephen McLaughlin
Author: Xu Yongchen
Author: Paul R. White ORCID iD

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