| 焊接缺陷的超声回波信号分析与最佳特征子集的选择 |
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| 引用本文： | 刚铁,吴林.焊接缺陷的超声回波信号分析与最佳特征子集的选择[J].应用声学,1999,18(2):38-43. |
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| 作者姓名： | 刚铁 吴林 |
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| 作者单位： | 哈尔滨工业大学现代焊接生产技术国家重点实验室哈尔滨,150001 |
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| 基金项目： | 国家自然科学基金，航天基金 |
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| 摘 要： | 本文针对超声检测中信号处理的特征提取问题，对实际焊接缺陷的超声回波进行了分析。在此基础上，研究了超声回波特征的评价与最佳特征子集的选择，研究结果初步表明，本文提出的选择方法是比较有效的，可以用于缺陷的识别与分类。
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| 关 键 词： | 焊接缺陷 超声检测 信号分析 最佳特征子集 |
The ultrasonic echo signal analysis of welding flaw and the selection of optimum feature subset |
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| Gang Tie and Wu Lin.The ultrasonic echo signal analysis of welding flaw and the selection of optimum feature subset[J].Applied Acoustics,1999,18(2):38-43. |
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| Authors: | Gang Tie and Wu Lin |
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| Institution: | Harbin institute of Technology National Key Laboratory of AWPT, Harbin 150001;Harbin institute of Technology National Key Laboratory of AWPT, Harbin 150001 |
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| Abstract: | The ultrasonic echoes of real welding flaws are analyzed for feature extraction of signal processing. Evaluation of ultrasonic echo feature and selection of optimum feature subset are discussed. Preliminary experimental results show that, the method of feature selection expounded in this paper is relatively effective, and it could be used for the recognition and classification of flaws. |
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| Keywords: | Welding flaw Ultrasonic detection Signal analysis |
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