间断函数的全相位最小二乘法逼近  

The All Phase Least Squares Approximation of Discontinus Function

作　　者：范晓志[1] 

机构地区：[1]北京工商大学材料与机械工程学院,北京102488

出　　处：《机电产品开发与创新》2016年第3期9-10,25,共3页Development & Innovation of Machinery & Electrical Products

摘　　要：论文对原Fourier级数最小二乘逼近进行研究,提出全相位最小二乘逼近,它由Fourier系数不同循环起点的子最小二乘逼近组成,可将间断引起的过冲互相抵消,明显改善有间断的函数的逼近性能,实验证明逼近波形信噪比比传统方法大11db。Researching the formal Fourier coefficients least squares approximation, this paper introduces a all phase,least squares approximation which contains of all son least squares approximation with cycle Fourier coefficients. This all phase least squares approximation can low down Gipps phenomenon and have good approximation performance for discontinuous function. The experiment proves the signal noise ra-tio of the approximation signal is bigger than traditional method about 11 db.

关 键 词：间断点 周期信号 Fourier级数重构 全相位 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]