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伪多源采样复域FastICA冲击定位算法

袁梅 牛奔 董韶鹏 喻亮

袁梅, 牛奔, 董韶鹏, 等 . 伪多源采样复域FastICA冲击定位算法[J]. 北京航空航天大学学报, 2016, 42(2): 243-250. doi: 10.13700/j.bh.1001-5965.2015.0096
引用本文: 袁梅, 牛奔, 董韶鹏, 等 . 伪多源采样复域FastICA冲击定位算法[J]. 北京航空航天大学学报, 2016, 42(2): 243-250. doi: 10.13700/j.bh.1001-5965.2015.0096
YUAN Mei, NIU Ben, DONG Shaopeng, et al. Pseudo-multi-source-sampling complex domain FastICA for impact location[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(2): 243-250. doi: 10.13700/j.bh.1001-5965.2015.0096(in Chinese)
Citation: YUAN Mei, NIU Ben, DONG Shaopeng, et al. Pseudo-multi-source-sampling complex domain FastICA for impact location[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(2): 243-250. doi: 10.13700/j.bh.1001-5965.2015.0096(in Chinese)

伪多源采样复域FastICA冲击定位算法

doi: 10.13700/j.bh.1001-5965.2015.0096
基金项目: 国家自然科学基金(51375030)
详细信息
    作者简介:

    袁梅 女,博士,副教授。主要研究方向:结构健康监测技术、信号处理技术、嵌入式系统及自动测试技术、先进传感技术、检测技术及自动化装置等。Tel.:010-82338757 E-mail:yuanm@buaa.edu.cn;牛奔 男,硕士研究生。主要研究方向:信号处理。Tel.:010-82338757 E-mail:nb0128@buaa.edu.cn

    通讯作者:

    袁梅,Tel.:010-82338757 E-mail:yuanm@buaa.edu.cn

  • 中图分类号: V219;TN911.7

Pseudo-multi-source-sampling complex domain FastICA for impact location

  • 摘要: 使用传感器阵列对材料结构冲击损伤进行定位,有助于及时发现损伤及潜在威胁,保障结构安全性。采用盲源分离(BSS)对传感器阵列信号进行预处理,提出单通道伪多源采样方法,利用每个传感器的分时段信息构建该传感器多源观测信号作为复域FastICA算法的输入,分离出每个传感器观测到的带有相位信息的冲击信号;结合阈值时延定位方法求解平面冲击事件的坐标。理论推导和数值仿真验证了本文设计的联合冲击定位算法的有效性。冲击定位平台上的实验结果表明,联合冲击定位算法可以从冲击-振动混合信号中分离出冲击信号,提高阵列传感器冲击定位的时延分析准确性。同时对传感器数量少于源信号的欠定BSS问题提供了一种解决方案。

     

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出版历程
  • 收稿日期:  2015-02-13
  • 刊出日期:  2016-02-20

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