摘要
针对传统故障模式、影响及危害性分析(FMECA)中因指标等权及主观确定故障影响概率带来的危害度计算偏差,提出一种综合故障概率、故障影响及故障后果的改进故障分析方法。应用最小二乘法、邻接矩阵、Pagerank、统计分析等评估故障概率、故障影响度、故障维修时间,据此引入灰色理论构建各指标的白化权函数并计算评估值,形成指标评价矩阵,基于熵权法计算指标权重,应用加权平均法计算并评估故障风险。以某国产加工中心为例进行方法应用,并与传统方法比较验证了本文方法的有效性。
Based on the traditional FMECA analysis due to the right of indicators and subjective determination of the probability of failure impact,an improved fault analysis method is proposed.Applying the least squares,adjacent matrix,Pagerank,statistical analysis,etc.to evaluate the probability of failure,fault impact,fault repair time,according to which the grey theory is introduced to construct the albino function of each indicator and calculate the evaluation value,form the index evaluation matrix,calculate the index weight based on entropy weighting method,apply the weighted average method to calculate and evaluate the failure risk.Take a domestic processing center as an example for method application,compared with traditional methods to verify the effectiveness of the proposed method.
作者
张英芝
侯胜冬
王志琼
董仁豪
杨升
ZHANG Ying-zhi;HOU Sheng-dong;WANG Zhi-qiong;DONG Ren-hao;YANG Sheng(Key Laboratory of CNC Equipment Reliability,Ministry of Education,Jilin University,Changchun 130022,China;College of Mechanical and Aerospace Engineering,Jilin University,Changchun 130022,China)
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2022年第2期433-438,共6页
Journal of Jilin University:Engineering and Technology Edition
基金
吉林省科技发展计划项目(20190302104GX)
吉林大学博士研究生交叉学科科研计划项目(101832020DJX037).
关键词
加工中心
故障分析
灰色理论
熵权法
加权平均法
machining center
fault analysis
gray theory
entropy right method
weighted average method
