2011
IMAACA 2011 Proceeding
Component Fault Detection and Isolation Comparison between Bond Graph and Algebraic Approach
Authors: Samir Benmoussa, Belkacem Ould Bouamama, Rochdi Merzouki
Abstract
This paper makes a comparison of component fault detection and isolation between an algebraic approach and a bond graph one. The conditions of component fault detection and isolation are viewed in algebraic approach as an observation problem of the fault with respect to the input and the output. In Bond graph approach, these conditions are performed by analyzing the causal paths from faults to outputs using the notion of bicausality. It is shown that the use of bicausal bond graph helps to integrate many mathematical approaches particularly the algebraic one. The component fault detection and isolation performed from bond graph is much simpler as compared to the algebraic approaches in which an analytical model is needed and complex computations are performed to determine the diagnosability conditions. An illustrative example is given to show the efficiency and the simplicity of the bond graph approach compared to the algebraic one.
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