摘要
应用MTALAB软件对加工中心进给系统的故障数据进行分析,得到平均首次故障时间(MTTFF)和平均故障间隔时间(MTBF)的点估计值和区间估计值。采用灰色聚类方法划分可靠性指标可拓区间灰数等级,并通过建立白化权函数得到等级区间权重矩阵。再结合构建比较判断矩阵确定的两种可靠性指标权重,最终建立了灰色聚类综合评价模型,对该加工中心进给系统可靠性水平进行评价。
The fault data of the machining center feed system is analyzed by MTALAB software.The point estimation value and in-terval estimation value of Mean Time to First Failure(MTTFF)and Mean Time Between Failure(MTBF)were obtained.The gray clus-tering method was used to divide the gray level of the reliability index extension interval,and the whitening weight function was established to obtain the level interval weight matrix.Combined with the weights of the two reliability indicators determined by the comparison judgment matrix,a grey cluster comprehensive evaluation model is established,and the reliability level of the feed system of the machining center is evaluated.
作者
周云峰
王德超
崔峰
朴成道
ZHOU Yunfeng;WANG Dechao;CUI Feng;PIAO Chengdao(Engineering College,Yanbian University,Yanji Jilin 133002,China)
出处
《机床与液压》
北大核心
2019年第20期192-196,200,共6页
Machine Tool & Hydraulics
关键词
加工中心
进给系统可靠性
灰色聚类
Machining center
Feed system reliability
Gray clustering
