| 基于小波变换的波形特征抽取与识别 |
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| 引用本文： | 吴波,何岭松,蔡志强,吴雅.基于小波变换的波形特征抽取与识别[J].华中科技大学学报(自然科学版),1993(1). |
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| 作者姓名： | 吴波 何岭松 蔡志强 吴雅 |
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| 作者单位： | 华中理工大学机械工程一系
(吴波，何岭松，蔡志强)，华中理工大学机械工程一系(吴雅) |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 从设备诊断领域中特征信号模式识别的应用角度,探讨了基于小波变换的特征提取与识别方法.首先讨论了小波变换及其基本性质,进而探讨了基于小波变换模量极大点的特征抽取及基于模量极大点的幅值沿尺度s演变的特征提炼方法,并构造了全局的相似性度量,最后给出了分析实例.
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| 关 键 词： | 设备诊断 小波分析 小波变换 特征抽取 波形识别 |
Feature Extraction and Recognition of Waveform Based on Wavelet Transform |
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| Wu Bo He Lingsong Cai Zhiqiang Wu Ya.Feature Extraction and Recognition of Waveform Based on Wavelet Transform[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1993(1). |
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| Authors: | Wu Bo He Lingsong Cai Zhiqiang Wu Ya |
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| Institution: | Wu Bo He Lingsong Cai Zhiqiang Wu Ya |
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| Abstract: | An approach to feature extraction and recognition of the characteristic signal is studied. The wavelet transform and its basic properties are discussed. An approach to feature extraction based on wavelet modulus maxima is suggested and a global distance function is presented. An application to fuel pressure waveform in a diesel engine is given as an example. |
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| Keywords: | equipments diagnosis wavelet analysis wavelet transform feature extraction waveform recognition |
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