实验数据的拟合及其不确定度表示

被引:8
作者
来雪梅 [1 ]
王雪萍 [2 ]
张海燕 [3 ]
机构
[1] 中北大学信息与通信工程学院
[2] 内蒙古第一机械制造(集团)有限公司
[3] 中国北方车辆研究所
关键词
实验数据; 拟合; 最小二乘法; 不确定度;
D O I
暂无
中图分类号
N33 [实验方法与实验设备];
学科分类号
07 ;
摘要
针对测试系统校准、比对过程中两个变量的实验数据,研究变量之间变化规律的拟合方法及其不确定度表示.利用最小二乘法和拉格朗日法对实验数据的曲线拟合及其不确定度表示方法进行了归纳与推导,考虑了两种情况:一种是不考虑自变量的不确定度,另一种是考虑自变量的不确定度.通过一组实验数据,给出了两种数据拟合方法及其不确定度的表达式,并且比较了这两种方法的结果,说明考虑自变量的不确定度比不考虑自变量的不确定度时实验数据拟合结果的不确定度较小.
引用
收藏
页码:481 / 484
页数:4
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