性能指标的环境因子  

Environmental factor of the performance index

作　　者：王玮 蔡瑞娇[2] 周利东[2] 

机构地区：[1]北京无线电计量测试研究所,北京100039 [2]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《系统工程理论与实践》2009年第4期150-153,共4页Systems Engineering-Theory & Practice

摘　　要：分析了性能指标环境因子与寿命环境因子在概念和应用中的差异.给出了性能指标环境因子的一般性定义,并导出了正态分布环境因子的表达式.利用这一结果,可以在一定条件下将不同环境的试验数据相互折合,从而增加样本量,有利于进一步的统计推断.最后通过实例,说明了性能指标环境因子的应用方法和步骤.The difference in conception and application between two environmental factors about life data and performance data was analyzed. A common definition about the periormance index was gaven, aria the formula about Normal distribution was led out. Using the result, these test data from different environmental can be converted each other, so the sample size becomes bigger, and it is useful the next statistical inference. The method and the procedure about the environmental factor of performance index in application were showed with an example.

关 键 词：可靠性 环境因子 性能指标 正态分布 

分 类 号：O212.2[理学—概率论与数理统计]