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Évaluation d’indicateurs de sûreté de fonctionnement d’architectures de contrôle-commande dans un contexte dynamique et incertain

Abstract : This PhD dissertation, supported by a CIFRE agreement with the Schneider Electric company, deals with the dependability performances assessment of industrial control system (ICS) architectures. The industrial challenge is to provide a tool able to guide on the sizing of ICS architectures in terms of performances. The scientific challenge in another hand is double. Firstly, we must generate automatically the models which are the core of the performance evaluation for a set of ICS architecture, since their manual modelling is challenging based on the wide variety of architecture to model and the limited amount of time and resources. Secondly, we must consider the degradation phenomena in those architectures. The selected modelling formalism is the coloured and timed Petri nets (CPN) which allows to represent model hierarchically, to handle random time delays which help on characterizing the components lifetime. Our contribution is on the development of a method for automatically generate a CPN model of ICS by instantiating a set of elementary components and defining generic observers, covering dependability indicators such as system reliability, availability, MTTF, number of failures and importance measures, and allowing to guide the choices of system integrators during pre-sales stage.
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https://hal.univ-lorraine.fr/tel-03203947
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Submitted on : Wednesday, April 21, 2021 - 10:51:48 AM
Last modification on : Thursday, April 22, 2021 - 3:21:03 AM

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Grâce Boyer. Évaluation d’indicateurs de sûreté de fonctionnement d’architectures de contrôle-commande dans un contexte dynamique et incertain. Automatique / Robotique. Université de Lorraine, 2021. Français. ⟨NNT : 2021LORR0029⟩. ⟨tel-03203947⟩

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