Modeling and Identification of the Restoring Force of a Marine Riser

Abstract

International audience; The purpose of this paper is to provide a novel model to characterize the nonlinear restoring force of a marine vertical riser by using position-and-velocity-dependent polynomials. This model permits the obtaining of a specific state space representation--via the Li'enard transformation--for the design of state observers that identify the structural parameters of vertical risers. The main results presented here are: (i) an approximation of the nonlinear restoring force by means of polynomials and its incorporation into a distributed parameter (DP) model, (ii) the transformation of the DP model into a Li'enard system and (iii) an analysis of its observability and identifiability properties.

Original document

The different versions of the original document can be found in:

• http://pdfs.semanticscholar.org/8ada/8b0535d67b6ff611678260d9ccd27595baeb.pdf

• https://hal.archives-ouvertes.fr/hal-00982128

• https://api.elsevier.com/content/article/PII:S1474667016415958?httpAccept=text/xml,

https://api.elsevier.com/content/article/PII:S1474667016415958?httpAccept=text/plain,

http://dx.doi.org/10.3182/20140824-6-za-1003.01794 under the license https://www.elsevier.com/tdm/userlicense/1.0/

• https://www.sciencedirect.com/science/article/pii/S1474667016415958,

http://www.nt.ntnu.no/users/skoge/prost/proceedings/ifac2014/media/files/1794.pdf,

https://hal.archives-ouvertes.fr/hal-00982128,

https://academic.microsoft.com/#/detail/2027977633

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