基于寿命分布模型的数控装置可靠性定量评估方法  

Reliability Quantitative Evaluation of CNC Based on Life Distribution

作　　者：陶耀东[1] 李辉[1,2] 杨志波[1,2] 姚家庆[1,2] 

机构地区：[1]中国科学院沈阳计算技术研究所,沈阳110171 [2]中国科学院研究生院,北京100049

出　　处：《小型微型计算机系统》2012年第11期2352-2356,共5页Journal of Chinese Computer Systems

基　　金：国家核高基重大专项(2012ZX01029-001-002)资助;国家科技支撑计划项目(2012BAF13B08)资助

摘　　要：由于数控装置的使用周期长、故障次数少、分布模型不确定等特点,使得可靠性测试与评估工作难以实施.针对该问题,本文引入了基于数理统计的方法,根据已知的产品故障失效时间,通过假设检验确定产品寿命分布模型.本文以该模型为基础,通过引入加速寿命试验的方法,在保证失效机理不变的情况下,极大缩短了可靠性试验时间,完成了数控装置可靠性试验和定量计算,从而使得数控装置的可靠性测试与评估工作变得切实可行.Reliability test and evaluation work of CNC is hard to be implemented,because which have the characteristics such as long life cycle,fewer failures and the uncertainty distribution of model.To solve the problem,this paper introduces a method to determine product life distribution model,which is based on mathematical statistics,time to failure based on known product failures,and hypothesis testing.Through accelerated life test method that keeping same failure mechanism,this paper greatly shorten the reliability test time to complete the quantitative reliability of CNC based on the model.Then reliability testing and evaluation of CNC becomes feasible.

关 键 词：可靠性分布模型 加速模型 高加速寿命试验 数控装置可靠性 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]