摘要
基于经典方法改进的安全分析方法—综合功能危险源分析(IFHA),综合了功能故障分析(FHA)、故障模式及影响分析(FMEA)、瞬时故障和可操作性研究(HAZOP)以及故障树分析(FTA)的分析原理,通过不同分析阶段结果的关联以及统一的故障树表示,保证系统分析全过程的一致性,克服了分别使用经典分析方法所出现的问题以及矛盾。IFHA应用于CBTC的地面子系统—ZC系统,帮助识别在系统设计阶段ZC软件功能可能出现的危险源,此例既可作为一个案例也可作为继续分析的项目。将ZC系统的软件和硬件结合进行的安全分析将是下一步的分析工作。
This paper introduced an improved safety analysis technique for Integrated Functional Hazard Analysis（IFHA）of Safety-Critical System.It was integrated functional safety analysis,FHA,FMEA,HAZOP and FTA by interaction of analyzing results in different phases and the expression of unified fault tree to ensure the consistency of the process and overcome the problems appeared in the classic analysis.In this paper the introduced technique was also used in the ground subsystem of CBTC-ZC Subsystem,which helped to identify potential hazards in system design,not only as a safety case,but also the project for the further analysis.The next work would analyze the software of ZC with hardware in the future.
出处
《铁路计算机应用》
2011年第7期1-4,共4页
Railway Computer Application
基金
国家自然科学基金重点项目(60634010)
