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| 基于平移不变小波的声发射信号去噪研究 | |
| 引用本文： | 姜长泓,王龙山,尤文,翟宁,初明.基于平移不变小波的声发射信号去噪研究[J].仪器仪表学报,2006,27(6):607-610. |
| 作者姓名： | 姜长泓 王龙山 尤文 翟宁 初明 |
| 作者单位： | 1. 吉林大学,长春,130012;长春工业大学,长春,130012 2. 吉林大学,长春,130012 3. 长春工业大学,长春,130012 |
| 摘 要： | 小波阈值去噪算法在信号的奇异点处会产生Pesudo-Gibbs现象。平移不变小波去噪方法是对闽值法的改进，该方法可以有效地抑制Pesudo-Gibbs现象，而且能够减少原始信号和估计信号的均方根误差，提高信噪比。将该方法用于声发射信号的去噪处理，并与闽值法进行了比较。仿真结果表明该研究方法可以有效地去除噪声，提取声发射信号的特征信息，具有较强的工程实用性。 |
| 关 键 词： | 声发射 小波 平移不变 去噪 |
Research on Acoustic Emission Signal De-noising Based on Translation Invariant Wavelet |
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| Jiang Changhong,Wang Longshan,You Wen,Zhai Ning,Chu Ming.Research on Acoustic Emission Signal De-noising Based on Translation Invariant Wavelet[J].Chinese Journal of Scientific Instrument,2006,27(6):607-610. | |
| Authors: | Jiang Changhong Wang Longshan You Wen Zhai Ning Chu Ming |
| Abstract: | The wavelet threshold method may produce Pesudo-Gibbs phenomenon on the singularity points of signal.The translation invariant wavelet is an improve method based on that algorithm.Comparing with threshold method,a translation invariance method can suppress Pesudo-Gibbs Phenomenon and minish NRMSE between the original signal and estimated one.At the same time,SNR of estimated signal can also be improved. |
| Keywords: | Acoustic emission Wavelet Translation invariance De-noising |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |