依据功能安全标准ISO 26262的燃料电池电子控制单元的系统设计及分析
首发时间:2018-10-16
摘要:作为首个面向汽车电子电气系统的功能安全标准,ISO 26262涵盖了功能安全管理、安全生命周期以及依据ASIL(Automotive Safety Integrity Level)的安全评估。系统的ASIL是由危害分析和风险评估而得出的。本文依据ISO 26262功能安全概念来实施燃料电池电子控制单元的设计和分析过程。本文的主要成果是展示了如何将I2O 26262应用在燃料电池控制系统中。包括符合分析汽车燃料电池系统的功能安全,根据安全分析结果得出ASIL等级,实施电子控制单元的系统设计,并实施FTA(Fault Tree Analysis)和FMEDA(Failure Modes Effects and Diagnostic Analysis)以验证满足ASIL要求。
关键词: ISO 26262 功能安全 燃料电池 电子控制单元 FTA FMEDA
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A Fuel Cell Electronic Control Unit System Design and Analysis in Accordance with ISO-26262 Functional Safety Standard
Abstract:As the first functional safety standard for automotive electric/electronic systems, it includes functional safety, safe life cycle and ASIL(Automotive Safety Integrity Level) based safety assessment . The ASIL is derived from the HARA(Hazard Analysis and Risk Assessment) process. In this paper ISO 26262 functional safety concept was adopted to a fuel cell ECU(Electric Control Unit) in the design and analysis process. The main contribution of this paper is to show how to apply ISO 26262 in new systems such as fuel cell control system. Include to analysis the functional safety of a fuel cell vehicle system, determine ASIL based on safety analysis, design fuel cell ECU on the system level, and perform FTA and FMEDA to prove ASIL qualified.
Keywords: ISO 26262 Functional Safety Fuel cell ECU FTA FMEDA
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