Vis enkel innførsel

dc.contributor.authorBjørnø, Jon
dc.contributor.authorHeyn, Hans-Martin
dc.contributor.authorSkjetne, Roger
dc.contributor.authorDahl, Andreas Reason
dc.contributor.authorFrederich, Preben
dc.date.accessioned2017-11-27T15:14:32Z
dc.date.available2017-11-27T15:14:32Z
dc.date.created2017-09-29T11:00:06Z
dc.date.issued2017
dc.identifier.isbn978-0-7918-5774-8
dc.identifier.urihttp://hdl.handle.net/11250/2468166
dc.description.abstractA thruster-assisted position mooring (TAPM) system includes different control functions for stationkeeping and motion damping for a moored offshore vessel with assist from thrusters. It consists of a conventional mooring system and a dynamic positioning (DP) system. The thrusters are used to provide damping and some restoring to the vessel motion and compensate if line breakage occurs. The mooring system absorbs the main loads to keep the vessel in place. This paper presents a complete modeling, parameter identification, and control design for a 1:90 scaled TAPM model vessel. The numerical values for the different model parameters are identified from towing tests. State-of-the-art TAPM control algorithms have been tested on the vessel in the Marine Control Laboratory (MC Lab), to see the behavior resulting from the different control algorithms. The presented experiments focus on the setpoint chasing algorithm, where the position setpoint slowly moves to the equilibrium position where the environmental loads are balanced by the mooring loads. This avoids conflicts between the mooring system and the control actions. If the environmental loads are too large so that the setpoint exceeds a user-defined safety radius, the setpoint is set to this radius and thruster forces grow to support the mooring system in counteracting the environmental loads to avoid line breakage. The experiments show that the vessel and setpoint chasing control algorithm behaves as expected, minimizing thruster usage and maximizing utilization of mooring system.nb_NO
dc.language.isoengnb_NO
dc.publisherAmerican Society of Mechanical Engineers (ASME)nb_NO
dc.relation.ispartofASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering - Volume 7B: Ocean Engineering
dc.relation.urihttp://proceedings.asmedigitalcollection.asme.org/data/conferences/asmep/93501/v07bt06a019-omae2017-61896.pdf
dc.titleModeling, Parameter Identification and Thruster-Assisted Position Mooring of C/S Inocean Cat I Drillshipnb_NO
dc.typeChapternb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.identifier.doi10.1115/OMAE2017-61896
dc.identifier.cristin1500277
dc.relation.projectNorges forskningsråd: 223254nb_NO
dc.relation.projectNorges forskningsråd: 203471nb_NO
dc.description.localcodeThis chapter will not be available due to copyright restrictions (c) 2017 by ASMEnb_NO
cristin.unitcode194,64,20,0
cristin.unitnameInstitutt for marin teknikk
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel