一类环境因子的置信估计

Confidence Estimation of Enviroment Factor

设产品在环境A、环境B下的某指标分别用X，Y表示，定义环境因子K＝X／Y。提出了应用结构可靠性的研究结果确定K的置信限的方法，给出了3参数Weibull分布、极小值Ⅰ型分布及分布自由时K的置信限的确定方法。

Let the index of the product in enviroment A is denoted by X and one in enviroment B by Y.Enviroment factor is defined as K=X/Y. In this paper the methods to find confidence limits of K are pre-sented by using the reserch results of structural reliability. Confidence limits of K about Weibull distribu-tion with three parameters, minimum I type distribution and distribution free are grven.