Device and method for a system analysis and diagnosis

G - Physics – 06 – F

Patent

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G06F 17/00 (2006.01)

Patent

CA 2581681

The invention relates to a device and method for analysing and diagnosticating a system which are based on a system model and are for industrial plants controlled by logic programmed or wired control automation. The inventive method comprises a model initialisation stage and a stage for establishing a list of inconsistent variables whose value in the system differs from the value predicted by the model. For each value of the inconsistency list, the initial list of variables suspected to generate an inconsistent value is established and, afterwards, a short list of suspected variables is obtainable by filtering the initial list.

La présente invention a pour objet un dispositif et un procédé d~analyse et de diagnostic d~un système, basés sur l~utilisation d~un modèle du système, avec application notamment dans le domaine des installations industrielles pilotées par des automates de commande logique programmée ou câblée. Le procédé comprend une étape d~initialisation du modèle, et une étape de création d~une liste de variables discordantes dont la valeur dans le système diffère de celle prédite par le modèle. Pour chacune des variables appartenant à la liste de discordance, une liste initiale de variables suspectes, soupçonnées d~avoir généré la valeur discordante, est créée, puis une liste restreinte de variables suspectes est obtenue par filtrage de la liste initiale.

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