A comparison method for identifying operating conditions for ship roll stabilization

• Autorzy: Koshkouei A. J. , Burnham K. J. , Roberts G. N.
• Języki publikacji: EN

Abstrakty

EN

Ship roll stabilisation may be improved by utilizing a set of parallel controllers in which individual controllers are activated in pairs for roll control via actuation of rudder and fins. To this end, it is necessary to identify the ship's operating conditions for facilitating the activation of the appropriate controller pair. Operating conditions depend mainly upon ship speed, wave height and wave encounter angle and, whereas only the ship speed is known to the system, the other conditions need to he identified. An approach has been designed to detect the actual seagoing condition via roll frequency detection. Two different methods are illustrated and discussed in this paper.

Słowa kluczowe

EN

ship roll stabilization control; parallel controller; fundamental ship roll frequency; roll frequency detection; averaging method; FFT method; simulation; adaptation

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Systems Science
• Rocznik: 2005
• Tom: Vol. 31, no 4
• Strony: 75--85
• Opis fizyczny: Bibliogr. 7 poz., wykr.

Twórcy

autor

Koshkouei A. J.

• Control Theory and Applications Centre, Coventry University, Coventry CV1 5FB. U.K

autor

Burnham K. J.

• Control Theory and Applications Centre, Coventry University, Coventry CV1 5FB. U.K

autor

Roberts G. N.

• Control Theory and Applications Centre, Coventry University, Coventry CV1 5FB. U.K

• .

Bibliografia

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• [3] Fossten T. I.. Guidance and Control of Ocean Vehicles, John Wiley & Sons Ltd.. 1994.
• [4] Froude W.. On the rolling of ships. Transactions of Institution of Naval Architects. 1861, Vol. 2, p. 180.
• [5] Lloyd A. R. J. M.. Seakeeping: Ship Behaviour in Rough Weather, Ellis Horwood Series in Marine Technology. Ellis Horwood Ltd.. 1989.
• [6] Perez T., Performance Analysis and Constrained Control of Fin and Rudder-Based Roll Stabilizers for Ships. PhD Thesis, The University of Newcastle. Australia, 2003.
• [7] Roberts G. N., Sharif- M. T., Sutton R., Agarwal. A., Robust control methodology applied to the design of a combined steering/stabiliser system for warships. IEE Proc. Control Theory Appl., Vol. 144! No. 2, March 1997.