作者：孙以材  宫云梅  王静  程东升 张效玮

单位：河北工业大学  邮编：300130

中图分类号：O241        

文献标识码：A         

文章编号：1006-883X(2006)03-0012-06

摘要：本文以硅单晶的电阻率温度系数～电阻率非线性曲线为应用对象，用直线最小二乘法、牛顿插值法、规范化多项式、MATLAB 3次、4次及5次曲线分别进行拟合近似逼近，并得到各自的多项式，用到表和图线以作对比。结论是牛顿插值法、规范化多项式法、MATLAB 5次曲线最为逼近。

关键词：电阻率温度系数；最小二乘法；牛顿插值法；规范化多项式法；MATLAB法

Comparison Among Several Methods Of Matching The Relation Curve Of Temperature Coefficient Of Resistivity～Resistivity For Silicon

Abstract: Matching the relation curve of temperature coefficient of resistivity～resistivity for silicon, as an objective example, were carried out respectively using the least square criterion, Newtons value-insert, normalized polynomial and MATLAB three, four, five order curves. Comparison among their results are presented with tables and figures. It is confirmed that Newtons value-insert, normalized polynomial and MATLAB five order curve are the best in approximation.

Keywords: the least square criterion; newtons value-insert; normalized polynomial MATLAB software

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备注：2006年  第12卷  第3期