Maio 2014 vol. 1 num. 1 - 10th World Congress on Computational Mechanics

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INCREMENTAL DISPLACEMENT ESTIMATION METHOD FOR VISUALLY SERVOED PARIED STRUCTURED LIGHT SYSTEM (ViSP)

Jeon, H. ; Shin, J. U. ; Myeong, W. ; Myung, H. ;

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With the continuing requirement of the structural displacement monitoring for massive civil structures, a vision-based displacement monitoring system is gaining great attention as an inexpensive solution. Currently, a visually servoed paired structured light system (ViSP) which measures the relative translational and rotational displacement each in 3DOF has been researched and the various simulation and experiments verified the performance of the system. The system is composed of two sides facing with each other, each with one or two lasers, a 2-DOF manipulator, a camera, and a screen. The 6-DOF displacement is calculated from the positions of the projected laser beams and the rotation angles of the manipulators on both sides by using iterative method such as extended Kalman filter (EKF) or Newton-Raphson. Since the computation time is relatively long due to the multiple iterations, this paper proposes non-iterative novel incremental displacement estimation (IDE) method that updates the displacement by using the previously estimated displacement and the difference of the previous and the current observed data. To verify the performance of the proposed method, a simulation has been performed and the result shows that the proposed non-iterative method estimates the displacement with the same level of accuracy in significantly reduced computation time compared to the EKF with multiple iterations.

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Palavras-chave: Structural Health Monitoring (SHM), displacement, Visually Servoed Paired structured light system (ViSP), Incremental Displacement Estimation (IDE),

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DOI: 10.5151/meceng-wccm2012-18947

Referências bibliográficas
  • [1] Balageas D., Fritzen C. P. and Guemes A.(eds), Structural Health Monitoring, New Jersey: John Wiley Andamp; Sons, Inc., 2006.
  • [2] Olaszek P., “Investigation of the dynamic characteristic of bridge structures using a computer vision method”, Measurement 25, 227-236, 1999.
  • [3] Park J. W., Lee J. J., Jung H. J. and Myung H., “Vision-based displacement measurement method for high-rise building structures using partitioning approach”, NDT Andamp; E Int. 43, 642–647, 2010.
  • [4] Myung H., Lee S. M., and Lee B. J., “Paired structured light for structural health monitoring robot system”, Struct. Health Monit. 10, 49-64, 2011.
  • [5] Jeon H., Bang Y., and Myung H., “A paired visual servoing system for 6-DOF displacement measurement of structures”, Smart Mater. Struct. 20, 45019, 2011.
  • [6] Jeon H., Shin J. W., and Myung H., “Incremental Displacement Estimation of Structures using Paired Structured Light” Smart. Struct. Sys. 9, 273-286, 2012.
  • [7] Spencer B. F., Jr., Christenson R. E., and Dyke S. J., “Next generation benchmark control problem for seismically excited buildings”, Proceedings of 2nd Int. Conf. on Structural Control, 1998.
Como citar:

Jeon, H.; Shin, J. U.; Myeong, W.; Myung, H.; "INCREMENTAL DISPLACEMENT ESTIMATION METHOD FOR VISUALLY SERVOED PARIED STRUCTURED LIGHT SYSTEM (ViSP)", p. 2668-2673 . In: In Proceedings of the 10th World Congress on Computational Mechanics [= Blucher Mechanical Engineering Proceedings, v. 1, n. 1]. São Paulo: Blucher, 2014.
ISSN 2358-0828, DOI 10.5151/meceng-wccm2012-18947

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