Multi-decision decentralized prognosis of failures in discrete event systems
Ahmed Khoumsi, Hicham Chakib · 2009
An architecture for the decentralized prognosis of discrete event systems (DES) was recently proposed in, where several local prognosers cooperate for predicting failures in a system modeled as a DES. In this paper, we first formulate the proposition of as a disjunctive architecture, and we develop a conjunctive architecture which is dual and complementary to the disjunctive one. Then, we develop a so-called multi-decision prognosis which generalizes the conjunctive and disjunctive prognosis architectures. The basic principle of multi-decision prognosis consists in using several decentralized prognosis architectures working in parallel. We finally show that our work can be easily extended for predicting a failure at least k steps before its occurrence, for a given k ges 1.