Quantitative Evaluation of the Safety of X-by-Wire Architecture subject to EMI Perturbations
Identifieur interne : 005F43 ( Main/Exploration ); précédent : 005F42; suivant : 005F44Quantitative Evaluation of the Safety of X-by-Wire Architecture subject to EMI Perturbations
Auteurs : Françoise Simonot-Lion ; François Simonot ; Yeqiong Song ; Cédric WilwertSource :
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Abstract
The X-by-Wire systems in cars can only be accepted if they provide at least the same dependability than the traditional ones. In this paper we propose a new approach to evaluate the impact of the EMI perturbations on the dependability of an X-by-Wire architecture. The considered X-by-Wire architecture is distributed around a TDMA-like communication protocol. So a perturbation causes the loss of a communication cycle with a certain probability. The vehicle level failure is then defined as the consecutive loss of a certain number of communication cycles. Its reliability is modeled as that of the well-known consecutive-k-out-of-n :F systems. A case study, together with the EMI perturbations collected on the roads in France, is used to illustrate our approach.
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