基于最小二乘原理的分段曲线拟合法

The Piecewise Curve-fitting Method Based on Least-square Principle

在最小二乘原理的基础上,运用实测数据点的分段曲线拟合法,探讨相应的模型以及用不同类型的曲线同时拟合数据点的具体应用;对一实例,应用MATLAB编程设计,完成模型的求解、显著性检验等,可以得到拟合精度比较高的拟合曲线。该方法原理简便,其模型易用MATLAB编程求解。

A new piecewise curve fitting method based on Least-Square principle.The mathematical model and the application of the method is discussed.An example is presented and the resulting fitting-curve with good fitting of precision and location is obtained by using the software MATLAB.The proposed principle is tractable, and the corresponding mathematical model can be easily solved by using existing software MATLAB.