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Nonlinear identification of mooring lines in dynamic operation of floating structures

✍ Scribed by Mario A. Jordán; Reinel Beltrán-Aguedo

Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
352 KB
Volume
31
Category
Article
ISSN
0029-8018

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✦ Synopsis

An adaptive algorithm for on-line estimation of physical coefficients of cables in viscous environment is presented. The procedure is useful for obtaining cable characteristics, which are needed in stability analysis and control system design for moored floating structures. It uses measurements of position and forces from on-board instrumentation. It is also able to track changes in the depth and to test for parameter consistency in order to confer the estimation robustness with respect to dynamic perturbations. It is based on nonlinear solvers, which can cope with transcendental functions of the model structure. The proof of asymptotic convergence is presented. Finally, three basic case studies are analyzed.

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