摘要
为提高飞机整机级系统安全性评估效果,在明确整机级系统安全性评估思想的情况下,详细描述了整机级系统安全性分析和整机级系统安全性验证的流程;运用故障树分析法和故障模式与影响分析法研究了能够满足整机级系统安全性要求的评估方法和关键技术。实例表明:整机级严酷等级评估方法能够定性地防止颠覆性的逻辑错误;功能故障树可以对安全性指标进行精确的分配和计算;结合故障树和故障模式与影响分析法而形成的两阶段指标分配法提高了个别安全性指标数值,但仍符合安全性要求。
For the purpose of promoting the effect of System Safety Assessment in Aircraft Level, the process of System Safety Analysis and System Safety Validation in Aircraft Level is put forward on the premise of making clear the idea of System Safety Assessment in Aircraft Level. Fault Tree Analysis （FTA） and Failure Mode and Effect Analysis （FMEA） are utilized to study the assessment methods and key technologies that meet the requirements of System Safety Assessment in Aircraft Level. An example proves that Critical Severity Assessment Method in Aircraft Level can prevent subversive logical mistakes qualitatively, FTA can precisely allocate and calculate safety indexes, and the two-phase index allocation method combined FTA with FMEA increases the value of some safety indexes, but still satisfies safety demands.
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2011年第10期125-130,共6页
China Safety Science Journal
关键词
系统安全性评估
整机级
两阶段指标分配法
系统安全性分析
系统安全性验证
system safety assessment
aircraft level
two-phrase index allocation method
system safety analysis
system safety validation
