Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/807131

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Title
Antispin thrust allocation for marine vessels
Author/Creator
Ruth, Eivind;  Smogeli, Øyvind N.;  Perez, Tristan;  Sørensen, Asgeir J.
Institution
The University of Newcastle. Faculty of Engineering & Built Environment, School of Electrical Engineering and Computer Science
Description
In extreme weather conditions, thrusters on ships and rigs may be subject to severe thrust losses caused by ventilation and in-and-out-of-water events. When a thruster ventilates, air is sucked down from the surface and into the propeller. In more severe cases, parts of or even the whole propeller can be out of the water. These losses vary rapidly with time and cause increased wear and tear in addition to reduced thruster performance. In this paper, a thrust allocation strategy is proposed to reduce the effects of thrust losses and to reduce the possibility of multiple ventilation events. This thrust allocation strategy is named antispin thrust allocation, based on the analogous behavior of antispin wheel control of cars. The proposed thrust allocation strategy is important for improving the life span of the propulsion system and the accuracy of positioning for vessels conducting station keeping in terms of dynamic positioning or thruster-assisted position mooring. Application of this strategy can result in an increase of operational time and, thus, increased profitability. The performance of the proposed allocation strategy is demonstrated with experiments on a model ship.
Relation
IEEE Transactions on Control Systems Technology Vol. 17, Issue 6, p. 1257-1269
Publisher Link
http://dx.doi.org/10.1109/TCST.2008.2006187
Date
2009
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Keyword(s)
allocation;  antispin;  control;  thruster control
Resource Type
journal article
Identifier
http://hdl.handle.net/1959.13/807131
Identifier
ISSN:1063-6536
Reviewed
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Subject
"IEEE Transactions on Control Systems Technology"
 
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