Hazard Analysis and Risk Assessment based on Electric Power Steering according to ISO 26262
2022-01-1062
03/29/2022
- Event
- Content
- ISO 26262 is a functional safety standard for automotive electrical and electronic system . Hazard Analysis and Risk Assessment (HARA) is a sub-phase of the ISO26262 concept phase, which is one of most important safety activities of the ISO 26262 safety lifecycle. This paper details application of HARA for Electric Power Steering (EPS) system. First, item definition for EPS System is sketched out，which is prerequisite for the HARA. Item definition includes system description, its function, boundary, and interfaces to external systems. Then analysis procedure HARA of EPS System is detailed out ,including identifying potential hazards, developing a set of specific hazardous events, and assessing the risk of each hazardous event to determine the Automotive Safety Integration Levels (ASIL). In the end，according to analysis procedure of HARA, a set of safety goals and safety states for EPS System is proposed. The design of safety goals and safety states is applied to provide guidance to avoid and mitigate the risk for functional safety development of the EPS system.
- Citation
- Li, L., Du, J., Ye, X., Liu, X. et al., "Hazard Analysis and Risk Assessment based on Electric Power Steering according to ISO 26262," SAE Technical Paper 2022-01-1062, 2022, .