Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/15047
Title: Integrated optimal placement of displacement transducers and strain gauges
Authors: Zhang, XH
Zhu, S 
Xu, YL 
Hong, XJ
Keywords: Displacement transducers
Estimation error
Hybrid sensor system
Optimal placement
Strain gauges
Issue Date: 2009
Source: ICASS '09/IJSSD - Proceedings of Sixth International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics, 2009, p. 694-701 How to cite?
Abstract: This paper focuses on the problem of optimal design of hybrid sensor systems with both displacement transducers and strain gauges. Unlike traditional sensor placement approaches in which these two types of sensors are often plated 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 will be optimized simultaneously, and their measurement data will be 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 hybrid sensor system provides better estimation of structural response than single-type sensor system.
Description: 6th International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics, ICASS 2009, Hong Kong, 16-18 December 2009
URI: http://hdl.handle.net/10397/15047
ISBN: 9789889914059
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