计算机应用与软件2018，Vol.35Issue(5)：85-88,4.DOI:10.3969/j.issn.1000-386x.2018.05.015
基于误差和能量值的瞬态非平稳信号分析方法
TRANSIENT NONSTATIONARY SIGNAL ANALYSIS METHOD BASED ON ERROR AND ENERGY VALUE
摘要
Abstract
Wavelet analysis method has been widely studied and applied because it can effectively deal with transient nonstationary signals.However, for the original signal's own characteristics, how to choose the best wavelet basis function to improve its feature extraction and diagnostic performance is still rare.Based on the inherent characteristics of the original signal and wavelet basis features,combined with wavelet reconstruction error and wavelet frequency domain energy value method,a wavelet basis selection and analysis method was proposed.The problem of transient nonstationary signal analysis and processing accuracy caused by improper selection of wavelet bases was solved.In the experiment,the facial electromyography signal was used for wavelet analysis and the wavelet basis Db 4 was finally selected as the optimal wavelet basis for the analysis of the signal.The results showed the effectiveness of the method.关键词
小波变换/小波基/小波重构误差/小波频域能量值/瞬态非平稳信号Key words
Wavelet transform/Wavelet basis/Wavelet reconstruction error/Wavelet frequency domain energy value/Transient nonstationary signal分类
信息技术与安全科学引用本文复制引用
陈金香,王义,孙彦广,张云贵..基于误差和能量值的瞬态非平稳信号分析方法[J].计算机应用与软件,2018,35(5):85-88,4.基金项目
国家自然科学基金青年基金项目(61401104) （61401104）
国家自然科学基金面上项目(51374082). （51374082）
