摘要
为实现对复杂电子学系统进行可靠性量化分析,提出了一种基于证据理论的电子学系统非概率可靠性分析方法。利用证据理论来表征单元可靠性的不确定性,并通过响应函数获得系统的非概率可靠性输出,其区间的上下界分别为似真函数和信任函数,从而实现了不确定性的传播。与传统的概率可靠性分析方法相比,该方法不需要先验概率和条件概率,因而适合于对小子样的电子学系统进行可靠性量化分析,仿真结果表明了该方法的合理性及有效性。
In order to make quantitative analysis on complex electronic system,a novel non-probabilistic reliability analysis method based on evidence theory is proposed.The plausibility function and belief function are the upper and lower bounds respectively,then the uncertainty propagation is implemented through the system model.Comparing with conventional reliability analysis method based on stochastic model,the proposed method needs neither prior nor conditional probability,thus it can be applied to small sample condition.Good performance of the proposed method is demonstrated by simulation results.
出处
《信息与电子工程》
2012年第2期169-172,共4页
information and electronic engineering
基金
"十一五"行业预先研究资助项目(426010501)
"十一五"跨行业预先研究资助项目(51305060204)
关键词
证据理论
非概率可靠性
似真函数
信任函数
evidence theory
non-probabilistic reliability
plausibility function
belief function
