航天器检漏线性拟合参数的不确定度评定分析  

RESEARCH ON EVALUATION METHOD FOR UNCERTAINTY OF THE SLOPE PARAMETER IN LINEAR EQUATION FOR SPACECRAFT LEAK TEST

作　　者：王强庆[1] 薛长利[2] 丁勤[2] 

机构地区：[1]河北联合大学,河北唐山063000 [2]航天东方红卫星有限公司,北京100094

出　　处：《真空与低温》2014年第1期19-22,共4页Vacuum and Cryogenics

摘　　要：航天器检漏中需要进行线性参数拟合及其不确定度的评定。采用最小二乘法建立线性方程的斜率公式,推导斜率的A类及B类不确定度的计算公式,对其进行合理简化及影响分析。最后,实例说明该方法的具体应用。The bottleneck in the linear parameter fitting and its uncertainty evaluation in spacecraft leak test are dictated. By using the least square method, the calculation formula for slope parameter in linear equation was derived. And the calculation formulae for both type A and type B uncertainty of the slope were derived consequently. Then the formulae were simplified and proved to be effective. In the end the applying process for the formulae were demonstrated via an example.

关 键 词：检漏 最小二乘法 不确定度 评定方法 

分 类 号：TB774[一般工业技术—真空技术]