基于FTA的座舱压力控制系统安全性分析  

FTA based safety analysis of cabin pressure control system

作　　者：官颂[1] 叶青青[2] 杨建忠[3] 杨士斌[3] 

机构地区：[1]中国民航大学工程技术训练中心,天津300300 [2]中国民航大学航空自动化学院,天津300300 [3]中国民航大学天津市民用航空器适航与维修重点实验室,天津300300

出　　处：《中国民航大学学报》2014年第6期7-12,共6页Journal of Civil Aviation University of China

基　　金：国家重点基础研究发展计划(973计划)(2012CB720104)

摘　　要：通过分析与座舱环境相关的事故和事故征候,选取造成人员伤亡事故最多的失效状态作为研究对象。首先进行功能危险性评估,得出失效状态的失效类别和安全性目标概率,然后以此失效状态作为顶事件建立故障树,进行初步安全性分析,根据重要度和敏感度分析结果,得到该失效状态发生的关键影响因素。研究结果不仅可以为环控系统设计提供依据,提高系统可靠性,也有助于飞机维修人员快速定位故障源,提高维修效率。Based on the analysis of accidents and incidents related to cabin environment, a typical failure condition resulting in the most hazardous accidents is chosen. Firstly, failure classification and safety objective of the failure condition are concluded by Functional Hazard Assessment. Preliminary system safety analysis is conducted consequently. Fault tree basing on such top events is established. Furthermore, key factors impacting the occurrence of failure condition are determined based on importance and sensitivity analysis. The research conclusion wonld not only provide basis for environmental control system design and improvement of system reliability, but also help the aircraft maintenance personnel locate fault sources quickly and increase maintenance efficiency.

关 键 词：座舱环境 压力控制系统 功能危险性评估 初步安全性评估 故障树 隐蔽故障 

分 类 号：V223[航空宇航科学与技术—飞行器设计]