面向电子系统间歇故障的改进RPN计算框架

发布时间：2018-01-10 09:19

本文关键词：面向电子系统间歇故障的改进RPN计算框架　出处：《电子测量与仪器学报》2017年09期 　论文类型：期刊论文

【摘要】：针对经典风险优先值(risk priority number,RPN)方法的数学缺陷、要素缺陷和研究对象缺陷,分析了经典RPN方法存在这些缺陷和不足的原因,提出了一种面向电子系统间歇故障的RPN改进计算方法。该方法采用五态Markov模型进行故障致损次数O的估算,采用DEMATEL方法进行故障位置、机理、模式的相关性/影响性分析,采用马氏距离对RPN一次排序结果中的相同序号进行二次排序,较好的解决了经典RPN方法取值不是连续整数、对3个主要要素S、O、D取值的微小变化敏感等问题。最后,采用某海基设备电子系统的间歇故障案例来力证了改进RPN计算框架的有效性,可清晰区分不同间歇故障的危险级且更为客观,取得较好效果。
[Abstract]:Aiming at the classical risk priority value, the mathematical defect, the factor defect and the research object defect of the risk priority number (RPN) method. The reasons for the defects and shortcomings of the classical RPN method are analyzed. An improved RPN calculation method for intermittent failures of electronic systems is presented, in which a five-state Markov model is used to estimate the number of fault damage O. The DEMATEL method is used to analyze the fault location, mechanism, correlation / influence of the mode, and the Markov distance is used to reorder the same ordinal number in the primary ordering result of RPN. It solves the problem that the classical RPN method is not a continuous integer and is sensitive to the slight change of the value of three main elements. Finally. The effectiveness of the improved RPN computing framework is demonstrated by a case of intermittent fault of an electronic system of a sea-based equipment. The hazard level of different intermittent faults can be clearly distinguished and more objective, and better results can be obtained.
【作者单位】：武警工程大学装备工程学院;空军工程大学装备管理与安全工程学院;中国卫星海上测控部;
【基金】：国家自然科学基金(61502534) 飞行器海基测量与应用联合实验室开放基金(FOM2015OF015)资助项目
【分类号】：TP277
【正文快照】： 0引言科技发展日新月异,复杂的海基设备电子系统的可靠性直接影响着海基设备的正常运行与否,也直接关系海上任务的顺利进行。当前,可靠性和维修性学科已从传统可靠性预计转向了风险管理[1]。在可靠性工程领域中,风险优先值(risk priority number,RPN)方法是进行风险管理和产品

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