The weak isolability of the structure of binary residuals of multiple faults

Abstract

The chosen keypoints of the theoretical framework of the multiple fault isolability assessment are briefly outlined in this paper. The set of multiple fault isolability metrics have been proposed. Introduced distinctiveness matrix as well as corresponding multiple fault metric, allow for characterization of multiple fault isolability of technical systems. This is particular important in respect to functional safety systems were multiple faults must be taken into account. Finally, a new definition of a weakly isolating structure of residual sets in respect to the multiple faults is proposed. This definition can be considered as an extension of Gertler’s theoretical framework of a structural approach to fault isolation.