工矿自动化2013，Vol.39Issue(7)：61-64,4.DOI:10.7526/j.issn.1671-251X.2013.07.016
基于改进小波包变换的谐波检测方法研究
Research of harmonic detection method based on improved wavelet packet transformation
摘要
Abstract
For problems of fence effect and spectrum leakage of harmonic detection method based on Fourier transformation,the paper proposed a harmonic detection method based on improved wavelet packet transformation.The method achieves uniform division of signal band,makes harmonic frequencies concerned fall on the center of frequency band of wavelet packet by selecting appropriate sampling frequency and wavelet packet decomposition tree,so as to reduce spectrum leakage and effectively improve accuracy of spectrum analysis.Experimental results verify effectiveness of the harmonic detection method based on improved wavelet packet transformation.关键词
谐波检测/小波包变换/变频调速/频谱泄漏Key words
harmonic detection/ wavelet packet transformation/ frequency-conversion speed-regulation/ spectrum leakage分类
矿业与冶金引用本文复制引用
朱高中..基于改进小波包变换的谐波检测方法研究[J].工矿自动化,2013,39(7):61-64,4.基金项目
陕西省教育厅自然科学专项项目(2010JK533) （2010JK533）
渭南师范学院研究生专项项目(09YKZ017) （09YKZ017）
渭南市自然科学基础研究计划项目(2011KYJ-3). （2011KYJ-3）
