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Title: Fault Detection On Turbine Flow Meters Using Time-Frequency Analysis
Author: Osmel Reyes Vaillant, Jesus Cabrera Gomez
Source: Flomeko 2007
Year Published: 2007
Abstract: Rotor ball-bearing faults manifestation on turbine flow meters does not appear clearly either in time or spectral domain representation of its output signal. Scalograms obtained from turbine flow meter output signal on faulty conditions, using continuous wavelet transform (CWT) revealed visual differences from the ones obtained in good conditions. Singularity analysis of the correlations coefficient matrix C(b,a) for different segments of these vectors, based upon Lipschitz exponent calculation (Holder continuity criterion), showed local singular behavior associated to high speed transients caused by ball-bearing faults. Results from employing time-frequency signal analysis methods to detect this fault are presented in.this article.

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