Enhanced Safety and Monitoring Microprocessor Concept for a Steer-By-Wire System in Autonomous Vehicles

Abstract

When discussing semi- or fully autonomous driving systems, safety issues must be considered seriously. The focus of this work-in-progress paper is on the design and implementation of a safety and an enhanced E-Gas monitoring concept in a dual-microprocessor system, which is utilized for a fail-operational Steer-By-Wire system in autonomous vehicles. Furthermore, based on ISO 26262, safety requirements for a Steer-By-Wire system and its decomposition are figured out. Meanwhile, an example of the limitation of ISO 26262 towards autonomous driving is discussed and its corresponding solution is proposed. In addition, several test results of the above-mentioned dual-microprocessor system are demonstrated.