Chapter
Apr 26, 2012
Considering Sensor Characteristics during Measurement-System Design for Structural System Identification
Authors: James-A. Goulet James.Goulet@ epfl.ch, Prakash Kripakaran, and Ian F. C. SmithAuthor Affiliations
Publication: Computing in Civil Engineering (2009)
Abstract
This paper presents a method for measurement-system design through criteria related to model based structural identification. Using a multi-model approach and results from previous research carried out at EPFL, an improved algorithm is proposed. The algorithm accounts for various types of sensors having different accuracies and taking different kinds of measurements. The algorithm selects sensor types and locations that minimise the number of non-identified candidate models. The results show that the approach provides an alternative to selecting and placing sensors using engineering experience alone, and that a scientific approach based on sensor characteristics and modelling error is feasible. A single span composite bridge is used to illustrate the algorithm. It is shown that adding more than 9 sensors, from a possible set of 34, will not provide further useful information for structural identification.
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© 2009 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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IMAC, Applied Computing and Mechanics Laboratory, EPFL, École Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland. E-mail: James.Goulet@ epfl.ch
Prakash Kripakaran
IMAC, Applied Computing and Mechanics Laboratory, EPFL, École Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland
Ian F. C. Smith
IMAC, Applied Computing and Mechanics Laboratory, EPFL, École Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland
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