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.
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)
关键词
广义指数分布
分组数据
步加试验
Nelson模型
generalized exponential distribution
grouped data
the step-stress accelerated life tests
Nelson model
