Noise monitoring technology for objects in transition to the emergency state

Technology for determining values of noise variance, cross-correlation functions and coefficients of correlation between the useful signal and the noise is proposed for monitoring of the latent period of an object failure. The determined values form sets of informative attributes, which are equal to...

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Bibliographic Details
Published in:Mechanical systems and signal processing 2012-02, Vol.27, p.755-762
Main Authors: Aliev, T.A., Guluyev, G.A., Pashayev, F.H., Sadygov, A.B.
Format: Article
Language:English
Subjects:
Compressors
Correlation
Defect origin
Emergencies
Failure forecasting
Faults
Informative attribute
Monitoring
Monitoring technology
Noise
Noise analysis
Noise monitoring
Refineries
Technical state
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Summary:Technology for determining values of noise variance, cross-correlation functions and coefficients of correlation between the useful signal and the noise is proposed for monitoring of the latent period of an object failure. The determined values form sets of informative attributes, which are equal to zero in the normal state of the object. In the course of object operation, values of elements that are different from zero are used to determine the moment and location of the fault. The technology has been applied in the monitoring system of the compressor unit at the Heydar Aliyev Baku Oil Refinery. ► Noise as a component of the signal is accepted as a carrier of diagnostic information. ► Technology for determination of the characteristics between the useful signal and noise is suggested. ► System of monitoring of vibration state of the compressor unit is suggested. ► The indicated techniques and the system make it possible to detect fault origin.
ISSN:0888-3270
1096-1216
DOI:10.1016/j.ymssp.2011.09.005