Convex optimization of thrust allocation in a dynamic positioning simulation system

• Autorzy: Zalewski P.

Identyfikatory

DOI

10.17402/176

• Języki publikacji: EN

Abstrakty

EN

Vessels conducting dynamic positioning (DP) operations are usually equipped with thruster configurations that enable the generation of resultant force and moment in any direction. These configurations are deliberately redundant in order to reduce the consequences of thruster failures and increase the safety. On such vessels a thrust allocation system must be used to distribute the control actions determined by the DP controller among the thrusters. The optimal allocation of thrusters’ settings in DP systems is a problem that can be solved by several convex optimization methods depending on criteria and constraints used. The paper presents linear programming (LP) and quadratic programming (QP) methods adopted in the DP control model which is being developed at the Maritime University of Szczecin for ship simulation purposes.

Słowa kluczowe

EN

dynamic positioning; thrust allocation; convex optimization; configurations; programming; simulator

• Wydawca: Wydawnictwo Naukowe Akademii Morskiej w Szczecinie
• Czasopismo: Zeszyty Naukowe Akademii Morskiej w Szczecinie
• Rocznik: 2016
• Tom: nr 48 (120)
• Strony: 58--62
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Zalewski P.

• Maritime University of Szczecin, Faculty of Navigation Centre of Marine Traffic Engineering 1–2 Wały Chrobrego St., 70-500 Szczecin, Poland

Bibliografia

• 1. Boyd, S. & Vandenberghe, L. (2009) Convex Optimization. New York: Cambridge University Press.
• 2. Daalen, E.F.G. van, Cozijn, J.L., Loussouarn, C. & Hemker, P.W. (2011) A Generic Optimization Algorithm for the Allocation of DP Actuators. Proceedings of the ASME 30th International Conference on Ocean, Offshore and Arctic Engineering, Rotterdam, The Netherlands, June 19–24, 2011. pp. 87–94.
• 3. Gierusz, W. & Tomera, M. (2006) Logic thrust allocation applied to multivariable control of the training ship. Control Engineering Practice 14. pp. 511–524.
• 4. Johansen, T.A. & Fossen, T.I. (2013) Control allocation – A survey. Automatica 49. pp. 1087–1103.
• 5. Lindfors, I. (1993) Thrust allocation method for the dynamic positioning system. In 10th International Ship Control Systems Symposium. pp. 3.93–3.106, Ottawa, Canada.
• 6. Rindarøy, M. (2013) Fuel Optimal Thrust Allocation in Dynamic Positioning. NTNU Norwegian University of Science and Technology. M.Sc. Thesis.
• 7. Ruth, E. (2008) Propulsion control and thrust allocation on marine vessels. Doctoral Theses at NTNU, 2008:203, NTNU Norwegian University of Science and Technology.
• 8. Wit, C.D. (2009) Optimal Thrust Allocation Methods for Dynamic Positioning of Ships. Delft University of Technology, Netherlands. M.Sc. Thesis.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)