On dependability evaluation of fieldbus networks: A transient fault analysis

Abstract

This paper presents a framework to evaluate fieldbus; dependability in presence of transient faults. Several fault models, which copes most situations found in an industrial environment, are proposed. Fault impact on fieldbus communications is evaluated taking into account different communication protocols and specific operating modes. Bus redundancy and common-cause faults are also considered. Analytical models are proposed and closed-form expressions derived, enabling the identification of the most relevant parameters from a dependability viewpoint. Copyright (C) 2001 IFAC.