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Distributed diagnosis of complex systems using timed failure propagation graph models

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4 Author(s)
Mahadevan, N. ; Inst. for Software Integrated Syst., Vanderbilt Univ., Nashville, TN, USA ; Abdelwahed, S. ; Dubey, A. ; Karsai, G.

Timed failure propagation graph (TFPG) is a directed graph model that represents temporal progression of failure effects in physical systems. In this paper, a distributed diagnosis approach for complex systems is introduced based on the TFPG model settings. In this approach, the system is partitioned into a set of local subsystems each represented by a subgraph of the global system TFPG model. Information flow between subsystems is achieved through special input and output nodes. A high level diagnoser integrates the diagnosis results of the local subsystems using an abstract high level model to obtain a globally consistent diagnosis of the system.

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13-16 Sept. 2010