基于数据融合的传感器优化布置方法

卢 伟 滕 军

振动与冲击 ›› 2009, Vol. 28 ›› Issue (9) : 52-55.

PDF(1025 KB)
PDF(1025 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (9) : 52-55.
论文

基于数据融合的传感器优化布置方法

  • 卢 伟 滕 军
作者信息 +

A METHOD OF OPTIMAL SENSOR PLACEMENT BASED ON DATA FUSION

  • Lu Wei Teng Jun
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文章历史 +

摘要

传感器优化布置是结构健康监测研究的重要内容,传感器数量和位置的选择直接关系到模态参数识别的效果及模型修正的结果等。为了达到布置在结构上的有限传感器能够测量并得到用于模态参数识别的最佳信息的目标,提出了基于数据融合的传感器优化布置方法。该方法以距离测度作为数据融合的融合度,首先通过对距离测度矩阵、支持度矩阵的计算,得到待选测点的综合支持度;其次,根据待选测点的综合支持度大小来确定传感器优化布置的位置;最后,以网架结构的传感器优化布置为例,运用峰值法进行自振频率识别,通过已选测点与未选测点识别效果的对比,验证了该方法的有效性。

Abstract

The optimal sensor placement is one of the most important contents of the study on structural health monitoring and is connected with the precision of the modal identification and the result of the model updating directly. In order to obtain the best information for the modal identification, the method of optimal sensor placement based on data fusion is proposed. In the method, the distance measure is used to be the fusion level; firstly, the synthesized support level of the proposed measured points is calculated through the calculation of distance measure matrix and the support level matrix; secondly, the optimal location of sensor is decided according to the size of the synthesized support level; thirdly, the method is proofed to be effective through an example of optimal sensor placement on space truss structure, in which the peak value method is used to identify the natural frequency and the identified frequencies of selected measured points and the unselected measured points are compared.

关键词

传感器优化布置 / 数据融合 / 结构健康监测 / 模态识别

Key words

optimal sensor placement / data fusion / structural health monitoring / modal identification

引用本文

导出引用
卢 伟 滕 军. 基于数据融合的传感器优化布置方法[J]. 振动与冲击, 2009, 28(9): 52-55
Lu Wei Teng Jun. A METHOD OF OPTIMAL SENSOR PLACEMENT BASED ON DATA FUSION[J]. Journal of Vibration and Shock, 2009, 28(9): 52-55

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