EFFECTIVE VIBRATION ANALYSIS OF IC ENGINES USING CYCLOSTATIONARITY. PART I-A METHODOLOGY FOR CONDITION MONITORING

Condition monitoring of IC engines through the analysis of their vibrations has been recognized to be a difficult issue, essentially because of the complexity of the signals that are involved. This paper introduces an original approach which explicitly takes into account the non-stationary nature of...

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Bibliographic Details
Published inJournal of sound and vibration Vol. 257; no. 5; pp. 815 - 837
Main Authors ANTONI, J., DANIERE, J., GUILLET, F.
Format Journal Article
LanguageEnglish
Published London Elsevier Ltd 01.11.2002
Elsevier
Subjects
Acoustics
Applied sciences
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Industrial metrology. Testing
Measurement and testing methods
Measurement methods and techniques in continuum mechanics of solids
Mechanical engineering. Machine design
Mechanics
Physics
Solid mechanics
Structural and continuum mechanics
Measurement
Vibration
Rotating machine
Signal processing
Internal combustion engine
Spectral analysis
Fault diagnostic
Monitoring
Structural analysis
Defect detection
Cyclostationarity
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Summary:Condition monitoring of IC engines through the analysis of their vibrations has been recognized to be a difficult issue, essentially because of the complexity of the signals that are involved. This paper introduces an original approach which explicitly takes into account the non-stationary nature of the vibration signals. The key idea is to rephrase the issue into the framework of cyclostationary processes, which is perfectly suited for describing physical phenomena generated on a cyclic basis. A general methodology is introduced that is based on angular sampling and cyclic signal processing. It serves as a strong basis for designing ad hoc diagnostic indicators.
ISSN:0022-460X
1095-8568
DOI:10.1006/jsvi.2002.5062