A METHOD OF OPTIMAL SENSOR PLACEMENT BASED ON DATA FUSION
Lu Wei Teng Jun
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(Harbin institute of technology Shenzhen graduate school, Shenzhen, 518055)
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History+
Received
Revised
Published
2008-08-29
2008-11-14
2009-09-25
Issue Date
2009-09-25
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.
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