Détection de changement de mode de fonctionnement: application à la coulée continue de l'acier

Abstract : Most of time a system is characterized by few operating modes, each of them could be describe by a model. In the case of the commutation between each operating mode is due to unknown process (fault, changing in condition,) it could be difficult to operate with this system and used the appropriate commands. With a partially supervised system (knowing of number of operating mode and model structure that represent each mode), a method is developed to detect the active operating mode at each time. Indeed, the analyses of the residual gradient, that obtain by product each local model together, permit to characterize the operating mode. Application of this method is presented with simulated data and industrial data of continuous casting to detect a particular phenomenon: the sticker. Finally, a rejection mode method is used on industrial thermal data in the same aim (detection of stickers in continuous casting)
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Loïc Bazart. Détection de changement de mode de fonctionnement: application à la coulée continue de l'acier. Autre. Université de Lorraine, 2014. Français. ⟨NNT : 2014LORR0055⟩. ⟨tel-01750763⟩

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