Cyclostationnarités d'ordre 1 et 2 : application à des signaux vibratoires d'engrenages

Gérard Lejeune (1) , Jean-Louis Lacoume (1) , P. Marchand (1) , Matthieu Durnerin (1) , Nadine Martin (1) , Joël Liénard (1) , André Silvent (1) , Corinne Mailhes (2) , Francis Castanié (2) , Pascale Prieur (3) , Georges Goullet (4)

1 CEPHAG - Centre d'Études des Phénomènes Aléatoires et Géophysiques
2 IRIT-SC - Signal et Communications
3 DER/SDM
4 CTSN/DLSM

The cyclostationary properties of the vibrations signals of a gear has been used for diagnosis purposes. The cyclostationarity appears on the mean values of the signal (order 1) and on the energetic characteristics (order 2). We show the importance of the separation of these two kinds of cyclostationarity, particularly for the estimation of the spectral correlation. We applied this new method of diagnosis to real data and we show the large amount of information that is conveyed by the 2 orders of cyclostationarity.

Domains: Signal and Image processing; Signal and Image Processing

Gérard Lejeune, Jean-Louis Lacoume, P. Marchand, Matthieu Durnerin, Nadine Martin, et al.. Cyclostationnarités d'ordre 1 et 2 : application à des signaux vibratoires d'engrenages. 16ème colloque GRETSI sur le Traitement du Signal et des Images, GRETSI 1997, Sep 1996, Grenoble, France. ⟨hal-00263823⟩