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文摘
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由于航空电子系统工作时存在失常态,且其失效行为具有不确定性,因此基于概率论的故障树分析(FTA)模型不适用于分析其可靠性.该文引入Vague集描述底事件的失效行为,并构造了基于三角形Vague集算术运算的与/或门模糊算子,提出一种Vague故障树分析(VFTA)模型.对某直流系统进行可靠性分析表明,VFTA模型比其它模糊FTA模型更灵活、更有效. |
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其他语种文摘
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Because most avionic equipments have abnormal states and its failure behaviors are always characterized in uncertainty, it is very difficult to analyze its reliability by Fault Tree Analysis(FTA) model which is based on probability theory. To solve this problem, the failure behaviors of bottom events are represented by triangle Vague sets, and the AND/OR fuzzy operators are built based on arithmetic operations of triangle Vague sets, and sequentially the Vague Fault Tree Analysis(VFTA) model is proposed. Three FTA models are adopted respectively to analyze the reliability of a DC system, and the comparisons show that the proposed VFTA model is more flexible and more effective than the other fuzzy FTA models. |
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来源
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计算机工程
,2008,34(7):254-256 【核心库】
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关键词
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航空电子系统
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失常态
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三角形Vague集
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Vague故障树
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地址
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1.
西北工业大学航空学院, 陕西, 西安, 710072
2.
西北工业大学电子信息学院, 陕西, 西安, 710072
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-3428 |
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学科
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自动化技术、计算机技术 |
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基金
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国家自然科学基金
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航天创新基金资助项目(2004CH01001)
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西北工业大学青年科技创新基金
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文献收藏号
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CSCD:3264778
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