| 基于小波分析的脉冲涡流信号去噪方法研究 |
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| 引用本文： | 彭学文,王伟,单春蕾,傅恩敏.基于小波分析的脉冲涡流信号去噪方法研究[J].计算机与现代化,2011(12):133-137. |
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| 作者姓名： | 彭学文 王伟 单春蕾 傅恩敏 |
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| 作者单位： | 苏州热工研究院有限公司在役检查中心; |
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| 摘 要： | 应用小波多尺度分解与重构技术和小波包分析技术对脉冲涡流检测信号进行处理,将信号中的噪声分离出来并去除。采用离散小波变换的强制消噪法、软阈值消噪法和不同熵准则的小波包消噪法,对实测的脉冲涡流信号进行消噪。在保留信号中有用成分的前提下,结合信号的信噪比和均方根误差,对消噪方法进行比较和优选。实验结果表明,小波包分析中的Threshold熵准则法效果最好。
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| 关 键 词： | 脉冲涡流信号 去噪 离散小波变换 小波包分析 信号处理 |
Research on De-noising Methods for Pulsed Eddy Current Signals Based on Wavelet Analysis |
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| PENG Xue-wen,WANG Wei,SHAN Chun-lei,FU En-min.Research on De-noising Methods for Pulsed Eddy Current Signals Based on Wavelet Analysis[J].Computer and Modernization,2011(12):133-137. |
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| Authors: | PENG Xue-wen WANG Wei SHAN Chun-lei FU En-min |
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| Affiliation: | PENG Xue-wen,WANG Wei,SHAN Chun-lei,FU En-min(In-service Inspection Center,Suzhou Nuclear Power Research Institute,Suzhou 215004,China) |
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| Abstract: | This paper utilizes multi-scale decomposition and reconstruction technology of wavelet and wavelet packet analysis(WPA) technology to do preprocessing for signals,separates noises from pulsed eddy current(PEC) testing signals and removes them.Discrete wavelet transform(DWT) and wavelet packet analysis(WPA) de-noising methods are used for PEC testing signals.Under the pre-condition of retaining useful component of the signals,combining with SNR and RMSE to compare the methods and the best de-noising method i... |
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| Keywords: | pulsed eddy current signals de-noising discrete wavelet transform wavelet packet analysis signal processing |
| 本文献已被 CNKI 维普 等数据库收录！ |
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