Analysis of Automatic Emergency Braking System Performance Insufficiency Based on System Theory Process Analysis

Automatic emergency braking (AEB) has been widely deployed in new passenger cars. It is a typical application of intelligent assisted driving technology and is of great significance for improving vehicle driving safety. Recently, the ISO/PAS 26448 is proposed to deal with unintended safety issues caused by interactions with surrounding environments. This paper first analyzes the working principle and components of the AEB system, and then uses the system theory process analysis method to assess the risk of the AEB system, analyzes the possible hazards in the AEB system, and proposes corresponding safety goals for the trigger time. Aiming at the influence of pavement information on the AEB system, the performance limitations of the AEB system are analyzed. By applying STPA methods to the AEB system, new design constraints and safety requirements can be implied for product improvement. The analysis process helps the development of a safer AEB system and can be conducted in any AEB product development steps.