| 结构健康监测中传感器优化设置方法研究 |
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| 引用本文： | 吴子燕,代凤娟,杨海峰.结构健康监测中传感器优化设置方法研究[J].郑州大学学报(工学版),2006,27(4):92-96. |
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| 作者姓名： | 吴子燕 代凤娟 杨海峰 |
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| 作者单位： | 西北工业大学力学与土木建筑学院,陕西,西安,710072 |
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| 基金项目： | 国家自然科学基金资助项目(10072041) |
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| 摘 要： | 首先探讨了3种基于数据信息最大化准则的传统传感器优化布置方法,即有效独立法、有效独立驱动点-残差法及运动能法.其中前2种基于Fisher信息阵最大化,而第3种基于运动能最大化.然后运用结构振动模态和三样条插值模态之间的均方差最小和抗噪性能最好,这两种比较准则来确定最优的传感器设置方法.数值分析表明:这3种传感器优化布置法都是有效的,而有效独立-驱动点残差法的效果最好.
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| 关 键 词： | 传感器 Fisher信息阵 优化配置 抗噪性 有效独立-驱动点残差法 有效独立法 运动能法 |
| 文章编号： | 1671-6833(2006)04-0092-05 |
| 修稿时间： | 2006年6月27日 |
Research on Optimal Sensor Placement Methods for Structure Health Monitoring |
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| WU Zi-yan,DAI Feng-juan,YANG Hai-feng.Research on Optimal Sensor Placement Methods for Structure Health Monitoring[J].Journal of Zhengzhou University: Eng Sci,2006,27(4):92-96. |
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| Authors: | WU Zi-yan DAI Feng-juan YANG Hai-feng |
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| Abstract: | This paper discusses three different optimal sensor placement methods with the aim of maximizing the data information,that is Effective Independence(EFI) method,Effective Independence Driving-point Residue(EFI-DPR)method and Kinetic Energy method.Two of them are based on maximizing Fisher information matrix and the other is based on Kinetic energy.Then using minimum of the mean square error between the FE model and the cubic spline interpolated mode shapes and the best capability to withstand the noise pollution keeping intact the information relative to the structure properties,the two criteria determine which is the most optimal sensor placement methods.The numerical analysis shows the three methods are all effective,but he effective independence driving-point residue method is the best optimal method. |
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| Keywords: | sensor Fisher information optimal placement the capability to withstand noise EFI method KEM method EFI-DPR method |
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