小波分析及其在化工信号分析处理中的应用及展望  

Application and Prospect of Wavelet Analysis in the Process of Signal Analysis in Chemical Engineering

作　　者：马丽萍[1] 石炎福[2] 余华瑞[2] 

机构地区：[1]昆明理工大学环境科学与工程学院,昆明650093 [2]四川大学化工学院化学工程系,成都610065

出　　处：《化工进展》2005年第2期147-153,共7页Chemical Industry and Engineering Progress

摘　　要：介绍了小波变换的基本理论和常用方法, 小波变换在信号处理方面的应用进展。认为小波变换的时频局部化的性质, 使其成为信号处理的强有力的工具。总结了在化学工程领域小波分析方法在信号除噪、系统特征提取、奇异性检测、故障诊断、预测等方面的应用, 提出小波分析方法在化工领域有广阔的应用前景。The basic theory and application methods of wavelet transformation are described, including the application researching in signal processing. These transformations provide a powerful method for data and signal processing by providing a flexible spatialscale (and timescale) window. The applications of wavelet analysis in chemical engineering are also summarized, such as signal denosing, analyzing special characteristics for a system, singularity measuring of singular signal, fault diagnosis, predicting et.al. The application potentiality and prospect of wavelet transform in chemical engineering are proposed.

关 键 词：小波变换 信号处理 特征提取 信号除噪 

分 类 号：TQ021.1[化学工程]