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“Offshore Wind Payload Transfer Using Flexible Mobile Crane”

Authors: Magnus B. Kjelland and Michael R. Hansen,
Affiliation: University of Agder
Reference: 2015, Vol 36, No 1, pp. 1-9.

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Keywords: Heave Compensation, Constant Tension, Hydraulic Winch, Marine Operation

Abstract: This article presents an offshore-simulated loading and unloading of a payload from a floating platform to a fixed structure. The experiments are performed in a dry-lab, where a Stewart platform is used to simulate the motion of the vessel. A hydraulically actuated vehicle loader crane is used to perform the tasks of payload transfer. The crane includes a hydraulic winch where the wire force is measured by a load cell. A mathematical model of the winch is derived and is experimentally verified. The control strategies include a heave compensation and a constant tension mode. A motion reference unit is used to generate the reference motion of the moving platform. Experimental results show the wire force while performing the load cases. This paper shows the advantage of using a reference motion as a feed forward control reference, instead of only relying on the constant tension.

PDF PDF (1259 Kb)        DOI: 10.4173/mic.2015.1.1



DOI forward links to this article:
  [1] (2015), doi:10.1016/j.oceaneng.2015.05.004


References:
[1] NSLT - The 18th North Sea Offshore Crane and Lifting Conference, Stavanger, Norway - Norwegian Society of Lifting Technology. (2013). NSLT - The 18th North Sea Offshore Crane and Lifting Conference, Stavanger, Norway - Norwegian Society of Lifting Technology, .
[2] Engedal, H. and Egelid, P.M. (2011). Modeling, simulation, and testing of constant tension system on winch, MSc diploma thesis, University of Agder.
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BibTeX:
@article{MIC-2015-1-1,
  title={{Offshore Wind Payload Transfer Using Flexible Mobile Crane}},
  author={Kjelland, Magnus B. and Hansen, Michael R.},
  journal={Modeling, Identification and Control},
  volume={36},
  number={1},
  pages={1--9},
  year={2015},
  doi={10.4173/mic.2015.1.1},
  publisher={Norwegian Society of Automatic Control}
};

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