Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5480
Title: Integrated optimal placement of displacement transducers and strain gauges for better estimation of structural response
Authors: Zhang, XH
Zhu, S 
Xu, YL 
Homg, XJ
Keywords: Integrated sensor system
Sensor optimal placement
Displacement transducers
Strain gauges
Noise
Issue Date: Jun-2011
Publisher: World Scientific
Source: International journal of structural stability and dynamics, June 2011, v. 11, no. 3, p. 581-602 How to cite?
Journal: International journal of structural stability and dynamics 
Abstract: Although a variety of sensors provide more comprehensive information and advanced features of structures, their distinct properties and limitations considerably complicate the design procedure of multi type sensor systems. This paper is focused on the optimal design of integrated sensor systems with both strain gauges and displacement transducers. Unlike traditional sensor placement approaches, in which these two types of sensors are often designed separately to monitor structural deformations and displacements respectively, the integrated design procedure presented in this study treats the sensor system as a whole. The number and locations of strain gauges and displacement transducers are optimized simultaneously, and their measurement data are fused together to better predict the unobserved structural response. The theoretical criterion for the optimization procedure is first formulated based on the strain and displacement mode shapes extracted from finite element models. Then, the initial candidate sensor locations are reduced to a smaller optimal set with minimized prediction error of structural response. A two-dimensional cantilever beam is then analyzed as a numerical example to investigate the effectiveness and accuracy of the presented optimal sensor placement approach. The results indicate that the integrated sensor system provides better estimation of structural response than single-type sensor system.
URI: http://hdl.handle.net/10397/5480
ISSN: 0219-4554
EISSN: 1793-6764
DOI: 10.1142/S0219455411004221
Rights: © World Scientific Publishing Company
Electronic version of an article published as International Journal of Structural Stability and Dynamics, 11, 3, 2011, 581-602. DOI: 10.1142/S0219455411004221 © World Scientific Publishing Company http://www.worldscientific.com/doi/abs/10.1142/S0219455411004221
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