摘要
对系统安全性评估的流程和方法进行了研究,分析了功能危害性评估(FHA)、初步安全性评估(PSSA)、系统安全性评估(SSA)3个阶段内容,并探讨了各阶段运用的评估方法。基于以上安全性评估方法,对某民机高升力控制系统进行FHA,确定了系统可能发生的所有功能失效故障,然后按失效故障危害影响程度对这些失效故障进行了分类。以其中一项Ⅰ类功能故障为例建立故障树,对其开展了PSSA和SSA,验证了系统设计满足安全性指标要求。
It introduces the processes and methods for the safety assessment, proposes the analysis items in the stage such as the Functional Hazard Analysis( FHA) , Preliminary System Safety Assessment( PSSA) and System Safety Assessment( SSA) , discusses the assessment method at various stages.Based on the above safety assess-ment methods, it takes a type of civil aviation aircraft as an example, carries out functional hazard analysis, de-fines all function failure in the system process.Based on the extent of failure damage, it classifies these failure, establishes the failure trees according to 1 class function, carries PSSA and SSA, verifies that the system design satisfies the requirement of safety index.
出处
《机械设计与制造工程》
2015年第7期76-81,共6页
Machine Design and Manufacturing Engineering
关键词
民用飞机
高升力控制系统
安全性评估
civil aircraft
high lift control system
safety assessment
作者简介
杨志丹(1984-),男,江西南昌人,上海飞机设计研究院工程师,硕士,主要研究方向为民用飞机飞行控制系统。