Offshore Wind Payload Transfer Using Flexible Mobile Crane

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 pe...

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Main Authors: Magnus B. Kjelland, Michael R. Hansen
Format: Article
Language:English
Published: Norwegian Society of Automatic Control 2015-01-01
Series:Modeling, Identification and Control
Subjects:
Online Access:http://www.mic-journal.no/PDF/2015/MIC-2015-1-1.pdf
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author Magnus B. Kjelland
Michael R. Hansen
author_facet Magnus B. Kjelland
Michael R. Hansen
author_sort Magnus B. Kjelland
collection DOAJ
description 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.
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spelling doaj.art-f317d53f523b4602bb8bf406c65b6c482022-12-21T21:43:43ZengNorwegian Society of Automatic ControlModeling, Identification and Control0332-73531890-13282015-01-013611910.4173/mic.2015.1.1Offshore Wind Payload Transfer Using Flexible Mobile CraneMagnus B. KjellandMichael R. HansenThis 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.http://www.mic-journal.no/PDF/2015/MIC-2015-1-1.pdfHeave CompensationConstant TensionHydraulic WinchMarine Operation
spellingShingle Magnus B. Kjelland
Michael R. Hansen
Offshore Wind Payload Transfer Using Flexible Mobile Crane
Modeling, Identification and Control
Heave Compensation
Constant Tension
Hydraulic Winch
Marine Operation
title Offshore Wind Payload Transfer Using Flexible Mobile Crane
title_full Offshore Wind Payload Transfer Using Flexible Mobile Crane
title_fullStr Offshore Wind Payload Transfer Using Flexible Mobile Crane
title_full_unstemmed Offshore Wind Payload Transfer Using Flexible Mobile Crane
title_short Offshore Wind Payload Transfer Using Flexible Mobile Crane
title_sort offshore wind payload transfer using flexible mobile crane
topic Heave Compensation
Constant Tension
Hydraulic Winch
Marine Operation
url http://www.mic-journal.no/PDF/2015/MIC-2015-1-1.pdf
work_keys_str_mv AT magnusbkjelland offshorewindpayloadtransferusingflexiblemobilecrane
AT michaelrhansen offshorewindpayloadtransferusingflexiblemobilecrane