基于贮备门DFT的飞控系统可靠性分析方法  

A Method of Reliability Analysis Based on DFTs for FCS with Spare Gates

作　　者：张竞凯[1] 章卫国[1] 刘小雄[1] 池程芝[1] 

机构地区：[1]西北工业大学自动化学院,西安710072

出　　处：《计算机测量与控制》2013年第1期142-145,共4页Computer Measurement &Control

摘　　要：针对现有大型客机电传(FBW)飞行控制系统(FCS)的体系结构及组成,运用动态故障树分析(DFTA)方法对系统进行可靠性分析;为系统所包含的贮备门事件(spare gates)建立了可靠性代数模型;该法较好地解决了子系统的分布多样问题,并且在逻辑符号系统基础上,推演出系统可靠性冗余分析的量化形式;通过对一个典型的电传飞控系统案例的研究,证明该种方法在工程中的有效性。According to the architecture and composition of modern airliners＇FBWFCS, this paper utilizes a method of dynamic fault tree analysis （DFTA） to analyze the reliability of the system. An algebraic model of reliability is built for the spare gates included within the sys tern. This method can deal with the system including components with various kinds of distribution in reliability. Based on the logical symbols system, the quantitative formulation is deduced to analyze the redundancy. The application for a case of a typical FBWFCS shows the efficiency in practice.

关 键 词：电传飞控系统 动态故障树 代数模型 贮备门 可靠性分析 

分 类 号：V24[航空宇航科学与技术—飞行器设计]