| 盲源分离和小波消噪在碰摩声频信号分析中的应用研究 |
| |
| 引用本文： | 李熠,何永勇,李志农,褚福磊.盲源分离和小波消噪在碰摩声频信号分析中的应用研究[J].机械强度,2005,27(6):719-724. |
| |
| 作者姓名： | 李熠 何永勇 李志农 褚福磊 |
| |
| 作者单位： | 清华大学,精密仪器与机械学系,北京,100084 |
| |
| 基金项目： | 国家自然科学基金资助项目（50105007）. |
| |
| 摘 要： | 碰摩是现代旋转机械运行中常见的一种故障，文中尝试从声频信号的角度对碰摩故障进行分析。在实际环境中，碰摩声频信号常常受到噪声的污染，文中将盲源分离和小波消噪方法相结合，使用P．S．（pre-separation denoising，separation）和P．S．P．（pre-separation denoising，sepamtion，post-sepamtion de-noising）方法对碰摩声频信号进行分析处理，大大提高了信号的信噪比，取得了比较理想的实验结果。
|
| 关 键 词： | 盲源分离 小波消噪碰摩故障诊断 |
| 收稿时间： | 2004-12-20 |
| 修稿时间： | 2004-12-202005-02-22 |
STUDY ON APPLICATION OF BLIND SOURCE SEPARATION AND WAVELET DE-NOISING IN RUBBING FAULT ACCOUSTIC SIGNAL ANALYSIS |
| |
| LI Yi,HE YongYong,LI ZhiNong,CHU FuLei.STUDY ON APPLICATION OF BLIND SOURCE SEPARATION AND WAVELET DE-NOISING IN RUBBING FAULT ACCOUSTIC SIGNAL ANALYSIS[J].Journal of Mechanical Strength,2005,27(6):719-724. |
| |
| Authors: | LI Yi HE YongYong LI ZhiNong CHU FuLei |
| |
| Affiliation: | Department of Precision Instruments, Tsinghua University, Beijing 100084, China |
| |
| Abstract: | Rubbing is one of the frequently confronted faults in modern rotating machines.The rubbing acoustic signal is analyzed.However,in the application,the acoustic signal is usually polluted by noise.To improve the quality of rubbing acoustic signal,Blind Source Separation and Wavelet De-noising are used together in the methods of P.S.(pre-separation de-noising,separation) and P.S.P.(pre-separation de-noising,separation,post-separation de-noising).At last,the case study demonstrates that the proposed method is efficient and applicable. |
| |
| Keywords: | Blind source separation Wavelet de-noising Rubbing fault diagnosis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
