Risk analysis with a fuzzy-logic approach of a complex installation

Abstract

Abstract. This paper introduces a procedural method based on fuzzy logic to analyze systematic the risk of an electronic system in an intentional electromagnetic environment (IEME). The method analyzes the susceptibility of a complex electronic installation with respect to intentional electromagnetic interference (IEMI). It combines the advantages of well-known techniques as fault tree analysis (FTA), electromagnetic topology (EMT) and Bayesian networks (BN) and extends the techniques with an approach to handle uncertainty. This approach uses fuzzy sets, membership functions and fuzzy logic to handle the uncertainty with probability functions and linguistic terms. The linguistic terms add to the risk analysis the knowledge from experts of the investigated system or environment.

Fuzzy-Based Risk Analysis for IT-Systems and Their Infrastructure

“…11. (a) Accessibility zones and classified ML levels for these zones needed by Genender [6] and (b) failure rate of an MCU compound by Peikert [14].…”

“…As a victim system, a complex compound of microcontroller (MCU) are used, in which breakdown failure probability is studied by Peikert [14]. In Fig.…”

“…Extending the approach of Peikert [9], with the additional experts opinion from Sabath [20], delivers a new rate of the risk level of an IEMI source. Therefore, the fuzzy sets for the kind of sources that are possible (14) are combined with the achievable values of field magnitude next to the target system (15) and the sets for the expert opinions (16)…”