Démarche d'Analyse Spectrale en vue d'une Interprétation Automatique, Application à un Signal d'Engrenages
| Autor: | Matthieu Durnerin, Nadine Martin, Corinne Mailhes, Gérard Lejeune, Joël Liénard, Jean-Louis Lacoume, Francis Castanié, Pascale Prieur, Georges Goullet, André Silvent |
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| Přispěvatelé: | Centre d'Études des Phénomènes Aléatoires et Géophysiques (CEPHAG), École Nationale Supérieure d'Ingénieurs Électriciens de Grenoble (ENSIEG)-Centre National de la Recherche Scientifique (CNRS), Signal et Communications (IRIT-SC), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, DER/SDM, EDF (EDF), CTSN/DLSM, DGA, TetrAS |
| Jazyk: | francouzština |
| Rok vydání: | 1997 |
| Předmět: | |
| Zdroj: | 16ème colloque GRETSI sur le Traitement du Signal et des Images GRETSI 1997 GRETSI 1997, Sep 1997, Grenoble, France. pp.539-542 HAL |
| Popis: | National audience; This paper describes a complete spectral analysis process, using the knowledge of both experts in signal processing as well as experts in fields of application (e.g. acoustic, vibratory mechanics) with the objective to estimate a signal spectral content. The contribution of this paper is the setup of a decision process based on the comparison of several methods in spectral analysis (e.g. Fourier, Maximum Likelihood, parametric, deflation) along with a spectral interpretation. A preanalysis consists in evaluating some signal properties of the signal (stationarity, gaussian hypothesis) and in studying its autocorrelation. Then, the process is builtfrom a succession of analyses, leading to the detection and identification of the different spectral patterns. The interpretation of each step is simplified by the definition of objective criteria. Finally, some additional analysis are considered (cyclostationarity, harmonic research). |
| Databáze: | OpenAIRE |
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