面向电子系统间歇故障的改进RPN计算框架  

Improved RPN computing framework facing to intermittent fault of electronic system

作　　者：吴虎胜 盛晟[2] 凌晓冬[3] 段东立[1] Wu Husheng Sheng Sheng Ling Xiaodong Duan Dongli(Materiel Engineering College, Armed Police Force Engineering University, Xi＇an 710086, China Materiel Management and Safety Engineering College, Air Force Engineering University, Xi＇ an 710051, China China Satellite Maritime Tracking and Control Department, Jiangyin 214400, China)

机构地区：[1]武警工程大学装备工程学院,西安710086 [2]空军工程大学装备管理与安全工程学院,西安710051 [3]中国卫星海上测控部,江阴214400

出　　处：《电子测量与仪器学报》2017年第9期1349-1357,共9页Journal of Electronic Measurement and Instrumentation

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

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。Aiming at solving the defects of risk priority number（ RPN） in mathematics,ingredients and research object,classic RPN method is analyzed. And an improved RPN method facing to intermittent fault of electronic system is presented. This method estimates failure times O by five-state Markov mode,the correlation and influence analysis of fault location,mechanism and mode are carried out by DEMATEL method,and the results which have the same sequence number in RPN first sorting are sorted by Mahalanobis distance.This method solves the problems well,for instance,classic RPN value is not a continuous integer,RPN result is sensitive to fractional changes of three key information factor S,O and D. The improved RPN computing model is applied to analyze intermittent fault case of a sea based equipment,which can get objective risks prioritization of different intermittent faults,and a good result is obtained.

关 键 词：间歇故障 电子系统 风险优先值 可靠性 

分 类 号：TN707[电子电信—电路与系统] TP277[自动化与计算机技术—检测技术与自动化装置]