Monitoring of rotation machines by vibration analysis using time-frequency methods

• Autorzy: Laurent H. H. , Sidahmed M.
• Konferencja: 19th IMEKO TC-10 International Conference on Technical Diagnostics. Integration in Technical Diagnostics (22-24.09.1999 ; Wrocław)
• Języki publikacji: EN

Abstrakty

EN

This paper deals with the problem of detecting spectral changes in non stationary noisy signals using non parametric tools. Belonging to this class, the time frequency representations (TFRs) allow a better insight into complicated processes by displaying the content of the signal in a 2-dimensional space. We propose in this article to extract exploitable knowledge from the time-frequency domain by the use of distance measures between TFRs. After presenting the different resulting stationarity indices, we show their performances in a monitoring context : the early detection of gear faults. The analysis of vibration signals which are representative of physical processes in gearboxes finally demonstrates the potential monitoring capability of the proposed methods.

Słowa kluczowe

EN

detection of spectral changes; time-frequency representations (TFRs); distance measures between TFRs; Gearbox faults analysis

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Prace Naukowe Instytutu Górnictwa Politechniki Wrocławskiej. Konferencje
• Rocznik: 1999
• Tom: Vol. 86, nr 24
• Strony: 172--177
• Opis fizyczny: Bibliogr. 8 poz., rys. 5

Twórcy

autor

Laurent H. H.

autor

Sidahmed M.

• HEUDIASYC, Universitete de Technologie de Compiegne, Centre de Recherches de Royallieu, Bp 20529, 60205 Compiegne,