THEORY AND APPLICATION OF WAVELET ANALYSIS INSTRUMENT LIBRARY

作     者：BO Lin QIN Shuren LIU Xiaofeng 

作者机构：College of Mechanical Engineenng Chongqing University Chongqing 400044 China 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2006年第19卷第3期

页      面：464-467页

核心收录：

学科分类：080703[工学-动力机械及工程] 08[工学] 080401[工学-精密仪器及机械] 0807[工学-动力工程及工程热物理] 0804[工学-仪器科学与技术] 080402[工学-测试计量技术及仪器] 

基　　金：This project is supported by National Natural Science Foundation of China(No.50575233) 

主　　题：Wavelet analysis Virtual instrument library Engine knock 

摘      要：Some new theory and algorithms on wavelet analysis are proposed, including continuous wavelet transform （CWT）, discrete wavelet transform （DWT）, wavelet package transform （WPT）, wavelet denosing and mother wavelet selection, etc. Using the component-based hierarchy mode, the platform for virtual instrument （VI） is constructed, and the functions such as data sampling, data analysis and data present, etc are provided. Subsequently, the wavelet analysis library is designed and developed. The library consists of expert system, experienced database, development platform and abundant wavelet analysis functional module, which together implement general and special wavelet analysis in the field of mechanical engineering, energy source, transportation and biomedicine, etc. Finally, the wavelet analysis virtual instrument library is applied to detect fault called engine knock. Experimental result indicates that the wavelet analysis virtual instrument library can efficiently solve the engineering problem such as detecting engine knock.