| 小波变换对汽车发动机异响信号的降噪处理方法 |
| |
| 引用本文： | 李任江,曲东超,孙莹,李春梅. 小波变换对汽车发动机异响信号的降噪处理方法[J]. 吉林工学院学报, 2007, 28(2): 184-186 |
| |
| 作者姓名： | 李任江 曲东超 孙莹 李春梅 |
| |
| 作者单位： | 长春工业大学机电工程学院 吉林长春130012 |
| |
| 摘 要： | 采用小波变换软阈值去噪的方法,对汽车发动机异响的原始信号进行分解和降噪处理。结果表明,小波去噪的方法具有很好的效果,能够满足工程实际的需要,为进一步分析异响信号获得了噪声极小的有效数据。
|
| 关 键 词： | 小波变换 软阈值 去噪 异响信号 发动机 |
| 文章编号： | 1006-2939（2007）02-0184-03 |
| 收稿时间： | 2006-03-20 |
| 修稿时间： | 2006-03-20 |
Noise reduction of wavelet transform for automobile engine knock signal |
| |
| LI Ren-jiang,QU Dong-chao,SUN Ying,LI Chun-mei. Noise reduction of wavelet transform for automobile engine knock signal[J]. Journal of Jilin Institute of Technology, 2007, 28(2): 184-186 |
| |
| Authors: | LI Ren-jiang QU Dong-chao SUN Ying LI Chun-mei |
| |
| Affiliation: | School of Mechatronic Engineering, Changchun University of Technology, Changchun 130012, China |
| |
| Abstract: | With the soft-threshold noise reduction of wavelet transform,the processing of both decomposition and noise reduction are carried to automobile engine knock signal.The results show that the method has good effects on the noise reduction and can meet the needs of engineering.It offers the useful data for further analyzing the knock signals. |
| |
| Keywords: | wavelet transform soft-threshold knock signal noise reduction engine. |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
