摘要
用N(t)表示元件在某段时间问隔中更新次数。本文讨论关于N(t)的三个问题:(1)计算N(t)的概率分布;(2)推出EN(t)满足的积分方程表达式;(3)研究EN(t)的极限分布,找出设备更新规律。
Use N(t) to express the frequency of the elements renora-tion of in some a time's intenval. We will discuss the following three questions about N(t) in this paper: (1) Computat ion of the probability distribution of N(t); (2)Deduct ion about the integrol equation expressions of EN(t); (3)Research of the limit distribution of EN(t)and conclusion atout the law of renorate equipment.
关键词
随机变量
更新函数
设备寿命
故障
random variable
distribution for length life
renorate fun-ction
