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Proceedings Paper

Filtering techniques in the dynamic deformation estimation using multiple strains measured by FBGs
Author(s): Johannes Treiber; Uwe C. Mueller; Jae-Hung Han; Horst Baier
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Paper Abstract

This paper investigates the use of filtering techniques such as the Low-pass and Kalman filter in combination with the quasi-static strain-displacement transformation in order to estimate dynamic structural displacement based on noisy strain measurements. Numerical simulations and vibration experiments were performed on simple beam structures under various dynamic loading cases to determine the sensitivity of estimation procedures against model errors and noise disturbance. In the experimental setup the multiplexing ability of fiber Bragg grating (FBG) sensors was used to obtain strain data with high accuracy and low noise level. Estimated displacements in the experiment were verified against laser displacement readings. Depending on the load case the noise-sensitive, quasi-static shape estimation results could be highly improved by applying recursive filtering methods which allow an application of the simple approach even for complex, vibrating structures.

Paper Details

Date Published: 8 April 2008
PDF: 9 pages
Proc. SPIE 6932, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008, 69322A (8 April 2008); doi: 10.1117/12.776176
Show Author Affiliations
Johannes Treiber, Korea Advanced Institute of Science and Technology (South Korea)
Technical Univ. of Munich (Germany)
Uwe C. Mueller, Technical Univ. of Munich (Germany)
Jae-Hung Han, Korea Advanced Institute of Science and Technology (South Korea)
Horst Baier, Technical Univ. of Munich (Germany)


Published in SPIE Proceedings Vol. 6932:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008
Masayoshi Tomizuka, Editor(s)

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