北京航空航天大学学报 ›› 2016, Vol. 42 ›› Issue (9): 1986-1991.doi: 10.13700/j.bh.1001-5965.2015.0590

• 论文 • 上一篇    下一篇

不完全覆盖系统的动态故障树定量分析方法

李佩昌, 袁宏杰, 曹振亚, 张海龙   

  1. 北京航空航天大学 可靠性与系统工程学院, 北京 100083
  • 收稿日期:2015-09-10 出版日期:2016-09-20 发布日期:2016-04-11
  • 通讯作者: 袁宏杰,Tel.:010-82316473,E-mail:yuanhongjie@buaa.edu.cn E-mail:yuanhongjie@buaa.edu.cn
  • 作者简介:李佩昌,男,硕士研究生。主要研究方向:可靠性与环境试验技术。Tel.:13241541313,E-mail:lipeichang@buaa.edu.cn;袁宏杰,男,博士,副教授,硕士生导师。主要研究方向:可靠性评估与验证、环境试验设计等。Tel.:010-82316473,E-mail:yuanhongjie@buaa.edu.cn
  • 基金资助:
    国防基础科学研究计划(61325102)

Quantitative method of dynamic fault tree analysis for imperfect coverage system

LI Peichang, YUAN Hongjie, CAO Zhenya, ZHANG Hailong   

  1. School of Reliability and Systems Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
  • Received:2015-09-10 Online:2016-09-20 Published:2016-04-11
  • Supported by:
    National Defense Basic Scientific Research Program of China (61325102)

摘要: 针对含备份结构的动态系统可靠性分析以及不完全覆盖问题,提出了一种温备份门的可靠性计算方法。该方法引入阶梯函数和脉冲函数来描述备份结构的动态失效特征,在考虑不完全覆盖的基础上计算了温备份门的可靠性,最后以某机载电子设备为例,建立了系统的动态故障树,论证了该方法的可行性,并与不考虑不完全覆盖的方法进行了比较,同时对系统进行了灵敏度分析,该方法计算结果更合理,为动态系统可靠性定量分析奠定了一定基础。

关键词: 动态故障树, 温备份, 不完全覆盖, 可靠性分析, 灵敏度分析

Abstract: In order to efficiently perform reliability analysis for imperfect coverage system which contains standby units that make the dynamic fault tree analysis very complicated, a quantitative reliability analysis method applied to warm spare gate is proposed. The step function and impulse function are introduced to describe the dynamic failure characteristics of standby units. Then, considering the dynamic system with imperfect coverage, the paper deduces the formulas for calculating the reliability of warm spare gate. Finally, an airborne electronic device as an example illustrates the feasibility of the method by establishing system dynamic fault tree. Compared to the existing method without consideration of imperfect coverage, combined with system sensitivity analysis, the computational result of the proposed method is more rational and provides a novel foundation for further research on reliability quantitative analysis.

Key words: dynamic fault tree, warm spare, imperfect coverage, reliability analysis, sensitivity analysis

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