| 随机变量概率信息不充分时的可靠性新模型 |
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| 引用本文： | 唐樟春,吕震宙,吕媛波.随机变量概率信息不充分时的可靠性新模型[J].工程力学,2011(4):18-22. |
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| 作者姓名： | 唐樟春 吕震宙 吕媛波 |
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| 作者单位： | 西北工业大学航空学院; |
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| 基金项目： | 国家自然科学基金项目(50875213); 航空基础基金项目(2007ZA53012); 863计划课题项目(2007AA04Z401); 科技重大专项项目(2009ZX04014-015-03) |
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| 摘 要： | 针对随机变量具有一定的数据积累而又不足以确定概率分布的情况,提出了一种新的可靠性模型.对于具有m个试验样本数据的基本随机变量,给定一映射变量的(m+1)个样本数据以形成m个子区间,使得每个子区间只包含1个基本随机变量的样本数据,从而可以确定每个子区间的基本可信度分配BPA.用证据合成的Dempster法则对具有n个基本...
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| 关 键 词： | 可靠性 失效概率 证据理论 证据合成 信任测度函数 似真测度函数 |
A NOVEL RELIABILITY MODEL FOR RANDOM VARIABLES LACKING SUFFICIENT PROBABILITY INFORMATION |
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| TANG Zhang-chun,LU Zhen-zhou,LU Yuan-bo.A NOVEL RELIABILITY MODEL FOR RANDOM VARIABLES LACKING SUFFICIENT PROBABILITY INFORMATION[J].Engineering Mechanics,2011(4):18-22. |
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| Authors: | TANG Zhang-chun LU Zhen-zhou LU Yuan-bo |
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| Affiliation: | TANG Zhang-chun,LU Zhen-zhou,LU Yuan-bo(School of Aeronautics,Northwestern Polytechnical University,Xi'an 710072,China) |
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| Abstract: | In the case that sample data are insufficient to determine probability distributions of random variables,a novel reliability model is presented on the basis of evidence theory.For the original random variable with m sample data,a matching variable with(m+1) sample data is constructed and the(m+1) sample data form m sub-intervals that each sub-interval exactly only involves a sample datum of the original random variable,and then the basic probability assignment(BPA) for each sub-interval can be determined.Fo... |
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| Keywords: | reliability the failure probability evidence theory evidence combination the belief measure the plausibility measure |
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