摘要
小波分析作为时频分析方法中一种新的信号处理技术,在各种实际工程领域中获得了广泛的应用。针对全周傅里叶算法不能滤除衰减直流分量与频率特性较差的问题,在深入研究各参数对给出的Morlet复小波幅值算法性能影响的基础上,提出减法滤波器加全周Morlet复小波幅值算法,计算配电线路的基波的幅值。它可有效滤除衰减直流分量并具有较好的频率特性。
Wavelet analysis, as a new kind of time-frequency representation technique, has been applied widely in different engineering practice. To solve the problem of the full-wave Fourier algorithm which is unabled to filter decaying DC component and has worse frequency characteristics, an algorithm combined subtraction filter with full-wave Morlet complex wavelet amplitude was presented to figure out the amplitude value of fundamental component of current in the distribution line on the basis of studying each parameter＇s influence on the performance of Morlet complex wavelet amplitude algorithm. It can filter decaying DC component efficiently and has clear frequency characteristics.
出处
《电工电气》
2009年第3期1-3,8,共4页
Electrotechnics Electric
基金
天津市自然科学基金资助项目(05YFJMC05900)
关键词
MORLET小波
基波分量
减法滤波器
频率特性
morlet wavelet
fundamental component of the current
subtraction filter
frequency characteristics
