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Model experiments on heading control of FSRU using RMAC

Authors
Kim, Y.-S.Sung, H.-G.Kim, J.-H.Hong, S.-Y.
Issue Date
2011
Keywords
FSRU; Heading control; Model test; RMAC; Turret
Citation
Proceedings of the International Offshore and Polar Engineering Conference, pp 158 - 162
Pages
5
Journal Title
Proceedings of the International Offshore and Polar Engineering Conference
Start Page
158
End Page
162
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/8869
ISSN
1098-6189
Abstract
This paper is concerned with the heading control for an offshore floating storage and regasification unit (FSRU) using resolved motion and acceleration control (RMAC) algorithm. Recently MOERI has studied on conceptual design of turret moored FSRU through a collaborative national research project. A turret moored vessel tends to have slewing motion. This slewing motion may cause a considerable decrease in working hours during loading and unloading process because sloshing in the LNG containment tank and collision between FSRU and LNGC are possibly taken place during the process. In order to deal with this problem, we developed a heading control system for turret moored FSRU and conducted a series of model tests with three azimuth thrusters on aft part of the vessel. A Kalman filtering technique is applied to estimate the low frequency motion of vessel. RMAC algorithm is employed as a main heading control method and modified I controller is introduced to reduce the steady state errors of heading. Minimum power consumption algorithm is applied to allocate thrust. Copyright ? 2011 by the International Society of Offshore and Polar Engineers (ISOPE).
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친환경해양개발연구본부 > 친환경연료추진연구센터 > Journal Articles
친환경해양개발연구본부 > 심해공학연구센터 > Journal Articles

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