Model-based Method to achieve EMC for Distributed Safety-Relevant Automotive Systems

Abstract—Automobiles contain an increasing number of dis-tributed Electrical and Electronic systems. Among such systems, Electromagnetic Compatibility (EMC) is a major issue that impacts functional safety and requires a high verification effort. The automotive standard for functional safety ISO 26262 already provides requirements for EMC and refers to agreed standards. It addresses the topic during the development process in order to obtain a tolerable level of risks arising from possible causes for system malfunctions. Yet, a coherent process for EMC and functional safety on a concept level is missing. With this publication a model-based method is provided that connects specification, design, and analysis of functional as well as physical characteristics for distributed safety-relevant systems with EMC simulations. By applying our method, potential coupling paths and EMC issues can be systematically identified, analyzed and addressed by introducing counter measures at a concept level of the development process. The resulting technical design is compliant to a technical safety concept and traceable with respect to electromagnetic characteristics of affected hardware components and wires. Keywords–Electromagnetic compatibility (EMC); Model-based design; Automotive; ISO 26262; Safety-relevant systems I