关键词: 整车控制系统；功能安全；风险评估；量化方法；汽车安全完整性等级

Abstract: In recent years, automobiles have developed towards electrification, intelligence, networking and sharing, electronic, electrical and programmable systems have been widely used in the automotive industry, and their related safety has become a current research hot topic. The Road Vehicle Functional Safety Standard (ISO 26262) guides the design, development and testing of electronic systems, where hazard analysis and risk assessment (HARA) are an important step in safety analysis. This paper discusses the HARA analysis process and reveals the shortcomings of traditional analysis methods such as heavy workload, reliance on team experience, and subjective rating, and at the same time, a quantitative assessment method is proposed to calculate the integrity level of vehicle safety through parametric hazard events and assessment rules, so as to improve the reliability and consistency of risk assessment.

Key words: Vehicle control system; Functional safety; Risk assessment; Quantify methods; Automotive safety integrity level