| 基于小波包重构的汽车发动机故障诊断 |
| |
| 引用本文： | 申焱华,刘立,杨文平.基于小波包重构的汽车发动机故障诊断[J].有色设备,2002(2):1-3. |
| |
| 作者姓名： | 申焱华 刘立 杨文平 |
| |
| 作者单位： | 1. 北京科技大学,土木与环境学院,北京,100083
2. 西安交通大学,机械工程学院,陕西,西安,710049 |
| |
| 摘 要： | 利用小波包对信号进行分解，分解的层数越多，频域分辨率越高，但时域分辨率越低，对故障信号的精确诊断不利，为提高时域分辨率，本文采用小波包重构算法，对发动机气缸振动信号的特定频段进行了小波包重构，并由此判断汽车发动机气缸燃烧振动的具体状态。
|
| 关 键 词： | 小波包重构 汽车发动机 故障诊断 |
| 文章编号： | 1003-8884(2002)02-0001-03 |
| 修稿时间： | 2001年11月14 |
Fault Diagnosis of Diesel Engine Based on Wavelet Packets Reconstruction |
| |
| SHEN Yan hua ,Liu Li ,YANG Wen ping .COLLEGE OF CIVIL AND ENVIRONMENT ENGINEERING,UNIVERSITY OF SCIENCE AND TECHNOLOGY,BEIJING, .SCHOOL OF MECHANICAL ENGINEERING,XI'AN JIAOTONG UNIVERSITY,XI'AN,SHANXI.Fault Diagnosis of Diesel Engine Based on Wavelet Packets Reconstruction[J].Non-ferrous Metallurgical Equipment,2002(2):1-3. |
| |
| Authors: | SHEN Yan hua Liu Li YANG Wen ping COLLEGE OF CIVIL AND ENVIRONMENT ENGINEERING UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING SCHOOL OF MECHANICAL ENGINEERING XI'AN JIAOTONG UNIVERSITY XI'AN SHANXI |
| |
| Affiliation: | SHEN Yan hua 1,Liu Li 1,YANG Wen ping 2 1.COLLEGE OF CIVIL AND ENVIRONMENT ENGINEERING,UNIVERSITY OF SCIENCE AND TECHNOLOGY,BEIJING,100083, 2.SCHOOL OF MECHANICAL ENGINEERING,XI'AN JIAOTONG UNIVERSITY,XI'AN,SHANXI,710049 |
| |
| Abstract: | Decomposing signal by wavelet packets,the more numbers of layer,the higher frequency resolution,and the lower time resolution. It is unsuitable to diagnose mechanical fault. In order to improve the resolution of time series,a method of reconstructing frequency signal by wavelet packets was used in this paper. The conditions of engine cylinders can be estimated by their reconstructed signal. |
| |
| Keywords: | Wavelet packets reconstruction Fault diagnosis Diesel engine |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
