| 转子系统油膜振荡的小波包分解与频带能量比例特征分析 |
| |
| 引用本文： | 韩清凯,俞建成,邓庆绪,闻邦椿.转子系统油膜振荡的小波包分解与频带能量比例特征分析[J].中国机械工程,2004,15(4):343-346. |
| |
| 作者姓名： | 韩清凯 俞建成 邓庆绪 闻邦椿 |
| |
| 作者单位： | 1. 东北大学机械工程与自动化学院,沈阳,110004
2. 中国科学院沈阳自动化研究所,沈阳,110016 |
| |
| 基金项目： | 国家 8 63高技术研究发展计划资助项目(2 0 0 2AA1180 3 0 )，国家自然科学基金资助项目 (5 0 2 75 0 2 4) |
| |
| 摘 要： | 在介绍小波包分解原理的基础上。对试验测得的单盘单跨转子系统的油膜振荡非平稳信号用小波包分解方法进行了研究。采用db44小波基函数进行4层小波包分解。给出了各频带内分解信号的特点及频带能量比例，其中第3频带是该转子系统在9600r／min时产生油膜振荡的特征频带。得到的试验数据及其分析结果对转子系统油膜振荡研究和旋转机械状态监测等具有重要意义。
|
| 关 键 词： | 转子系统 油膜振荡 小波包分解 频带能量比例 |
| 文章编号： | 1004-132X(2004)04-0343-04 |
Wavelet Packet Decomposition and Frequency-Band Energy Ratio Analysis for Oil-Film Oscillation in Rotor Systems |
| |
| Han Qingkai Yu Jiancheng Deng Qingxu Wen Bangchun .Northeastern University,Shenyang, .Shenyang Institute of Automation,Chinese Academy of Science,Shenyang.Wavelet Packet Decomposition and Frequency-Band Energy Ratio Analysis for Oil-Film Oscillation in Rotor Systems[J].China Mechanical Engineering,2004,15(4):343-346. |
| |
| Authors: | Han Qingkai Yu Jiancheng Deng Qingxu Wen Bangchun Northeastern University Shenyang Shenyang Institute of Automation Chinese Academy of Science Shenyang |
| |
| Affiliation: | Han Qingkai 1 Yu Jiancheng 2 Deng Qingxu 1 Wen Bangchun 1 1.Northeastern University,Shenyang,110004 2.Shenyang Institute of Automation,Chinese Academy of Science,Shenyang,110016 |
| |
| Abstract: | On the basis of wavelet packet decomposition technique introduced firstly, the measured unstable oil-film oscillations of single-disc and single-span rotor system were investigated. With the mother wavelet function 'db44', the displacement signals were decomposed into 4 levels. The decomposed signals in different decomposing levels together with their frequency-band energy ratios were discussed in details, where the third frequency-band is its characteristic band for the oil-film oscillation of the rotor system in 9600r/min. The obtained experimental data and analysis results here are necessary for studying oil-film oscillation and condition monitoring of rotating machineries. |
| |
| Keywords: | rotor system oil-film oscillation wavelet packet decomposition frequency-band energy ratio |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
