1 August 2003 Computer simulation of optimal sensor locations in loading identification
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Abstract
A method is presented for the selection of a set of sensor locations from a larger candidate sent for the purpose of structural loading identification. The method ranks the candidate sensor locations according to their effectiveness for identifying the given known loadings. Measurement locations that yield abnormal jumps in identification results or increase the condition number of the frequency response function are removed. The final sensor configuration tends to minimize the error of the loading identification results and the condition number of the frequency response function. The initial candidate set is selected based on the modal kinetic energy distribution that gives a measure of the dynamic contribution of each physical degree freedom to each of the target mode shapes of interest. In addition, excitation location is considered when selecting appropriate response measurement locations. This method was successfully applied to the optimal sensor location selection and loading identification of a uniform cantilever beam in experiment. It is shown that computer simulation is a good way to select the optimal sensor location for loading identification.
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Dong-Sheng Li, Hong-Nan Li, Xing Lin Guo, "Computer simulation of optimal sensor locations in loading identification", Proc. SPIE 5049, Smart Structures and Materials 2003: Modeling, Signal Processing, and Control, (1 August 2003); doi: 10.1117/12.499458; https://doi.org/10.1117/12.499458
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KEYWORDS
Sensors

Computer simulations

Condition numbers

Matrices

Finite element methods

Optical inspection

Bridges

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