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DIAGNOSIS APPROACH USINGBOND GRAPH AND TIMED AUTOMATA

H.Dhouibi, M.Bochra, Z. Simeu Abasi, M. Hassani

Modelling and analysing dynamic system behaviour is the key to successful the step in Fault Detection and Isolation(FDI)of industrial process. The problem of fault diagnosis involves detecting, locating and identifying the consideredfaults occurring in the dynamical system. The aim of this paper is to explain the use of hybrid tool which combines Bond Graph (BG) and Timed Automata (TA). These tools allow us, respectively, to detect the fault and find the cause of a system dysfunction. Due to structural and causal properties of the bond graph tool, we use it for detecting the incorrect behavior. For the phase of fault location and fault identification we use the timed model (timed automata). The proposed approach is validated through simulation tests to a level regulation system.