阀门的可靠性评估方法研究  

Research on reliability evaluation for valves

作　　者：李超[1] 王玉明[1] 梁浩[1] 廖彬[1] 

机构地区：[1]中国工程物理研究院总体工程研究所,四川绵阳621900

出　　处：《机械设计》2015年第1期13-16,共4页Journal of Machine Design

基　　金：国防科学技术预先研究基金资助项目(120108);国防重大技术基础课题资助项目(科工技[2011]869号)

摘　　要：针对阀门可靠性试验的不同结果,提出了两种基于威布尔参数的可靠性评估方法。当有阀门失效时,采用线性回归技术估计威布尔分布中的未知参数。当无阀门失效时,结合相似产品的寿命分布及参数信息,采用模糊综合分析法确定威布尔分布中的未知参数。分别给出了两种情况下阀门的可靠度计算公式。给出了阀门可靠性分析实例,结果表明该方法比较符合工程实际情况。Two reliability assessment methods were presented based on two-parameter Weibull according to different reliability tests of the valves.A linear regression method was adopted to estimate the two-parameter Weibull distribution when valves lost effectiveness.And a fuzzy synethesis analysis method was used to determine the parameters when no valves failed.The reliability estimation formulas of the confidence interval were obtained according to the data of the examples without losing effectiveness.The results show that the method conforms to the practical situation comparatively.

关 键 词：阀门 威布尔分布 可靠性评估 

分 类 号：TB114.3[理学—概率论与数理统计]