广义指数分布在步加试验中的参数估计  

Parameter Estimation of Generalized Exponential Distribution in the Step-Stress Accelerated Life Tests

作　　者：张莉[1] 

机构地区：[1]西华师范大学数学与信息学院,四川南充637000

出　　处：《宜宾学院学报》2015年第6期108-112,共5页Journal of Yibin University

基　　金：西华师范大学科研启动基金(08b025)

摘　　要：加速寿命试验中的步加试验,可有效地提高产品质量,且操作简单.基于Nelson模型,讨论广义指数分布在步加试验中的参数估计问题,利用EM算法给出了参数估计的显性表达式,通过数据模拟说明了估计方法的有效性和可行性.The step-stress accelerated life tests can improve the quality of products and have the advantages of simple op-eration. The parameter estimation of generalized exponential distribution in the step-stress accelerated life tests was dis-cussed based on Nelson model. The two-parameter concrete expressions were given by using EM algorithm. The estima-tion method was proved right by taking advantage of Monte Carlo stimulation.

关 键 词：广义指数分布 分组数据 步加试验 Nelson模型 

分 类 号：O213[理学—概率论与数理统计]