The high speed railway track is divided into contiguous segments called 'isolated zones'. A track circuit is associated to each isolated zone and it transmits informations from track to train such as the speed limit. The information transmission system diagnosis is based only on the analysis of the short-circuited current Icc measured by a specific inspection vehicle. The diagnosis system presented in this paper uses both an internal and an external one. An internal modeling is used to estimate the Icc current evolution with the possibility of different defect type simulation and an external modeling is performed in order to obtain a data representation space with reduced dimension and to make the classification task easier. Both parametric modeling such as autoregressive, wavelet and heuristic parametrization of the signal are tested. The system achieves a classification task (defect case/no defect case) by means of a neural network.
Utilisation conjointe de modeles interne et externe pour la classification et la localisation de defauts. Application au diagnostic de la transmission voie-machine du TGV
Anwendung eines internen und eines externen Netzmodelles zur Klassifikation und Lokalisation von Fehlern in einem System zum Datenaustausch zwischen einem Hochgeschwindigkeitszug und dem Gleis
Joint use of internal an external models for fault classification and location. Application in diagnosis of high-speed-train track-machine transmission
Revue de l'Electricite et de l'Electronique - REE ; 6/7 ; 80-84
2003
5 Seiten, 8 Bilder, 1 Tabelle, 6 Quellen
Article (Journal)
French
Echtzeitkommunikationssystem , Fehlerdiagnostik , Fehlerortung , Gleis , Hochgeschwindigkeitszug , Inspektion , Klassifikation , Kurzschlussstrom , Netzsimulation , Netzwerk (Schaltung) , Signalübertragung , Signalverarbeitung , Strommessung (elektrisch) , technische Diagnostik , Verkehrsregelung , Wavelet-Transformation
Interne - Externe Diagnosesysteme
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