Integrated optimal placement of displacement transducers and strain gauges

X. H. Zhang, Songye Zhu, You Lin Xu, X. J. Hong

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

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.
Original languageEnglish
Title of host publicationICASS '09/IJSSD - Proceedings of Sixth International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics
Pages694-701
Number of pages8
Publication statusPublished - 1 Dec 2009
Event6th International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics, ICASS 2009 - Hong Kong, Hong Kong
Duration: 16 Dec 200918 Dec 2009

Conference

Conference6th International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics, ICASS 2009
Country/TerritoryHong Kong
CityHong Kong
Period16/12/0918/12/09

Keywords

  • Displacement transducers
  • Estimation error
  • Hybrid sensor system
  • Optimal placement
  • Strain gauges

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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