Girón Sierra, José MaríaKatebi, R.Cruz García, Jesús Manuel de laEsteban San Román, Segundo2023-06-202023-06-202002[1] M. Ryle, "Smoothing out the ride", The Motor Ship, January, pp. 23- 26, 1998. [2] A.J. Haywood, A.J. Duncan, K.P. Klaka, and J. Bennet, "The development of a ride control system for fast ferries", Control Engineering Practice, pp. 695-703, 1995. [3] A.R.J.M. Lloyd, Seakeeping: Ship Behavior in Rough Weather, A.R.J.M.Lloyd, Gosport, Hampshire, UK, 1998. [4] J.F. O'Hanlon, and M.E. MacCawley, "Motion sickness incidence as a function of frequency and acceleration of vertical sinusoidal motion", Aerospace Medicine, 1974. [5] E.V. Lewis, Principles of Naval Architecture, SNAME, New Jersey, 1989. [6] Anonymous, "126 m long spanish fast ferry launched", Fast Ferries, September, pp. 19-20, 1996. [7] T.J. Fossen, Guidance and Control of Ocean Vehicles, John Wiley, New York, 1994. [8] S. Esteban, J.M. De la Cruz, J.M. Giron-Sierra, and B. De Andres, "Frequency domain model of fast ferry vertical motions", in Proc. RINA Intl. Conf. Hydrodynamics of High Speed Craft, London, paper 18, pp. 1-8, 2000. [9] B. De Andres, S. Esteban, J.M. Giron-Sierra and J.M. De la Cruz, "Modelling the motion of a fast ferry with the help of genetic algorithms", in Proc. IMACS Symp. on Mathematical Modelling, Viena, Austria, pp. 783-786, 2000. [10] S. Esteban, J.M. De la Cruz, J.M. Giron-Sierra, B. De Andres, J.M. Diaz and J. Aranda, "Fast ferry vertical acceleration reduction with active flaps and T-foil", in Proc. IFAC Intl. Symp. on Maneuvering and Control of Marine Craft, Aalborg, Denmark, pp. 233-238, 2000. [11] S. Esteban, B. De Andres, J.M. Giron-Sierra, O.R. Polo and E. Moyano, "A simulation tool for a fast ferry control design", in Proc. IFAC Intl. Conf. Control Applications in Marine Systems, Glasgow, U.K., 2001. [12] O.R. Polo, S. Esteban, A. Maron, L. Grau and J.M. De la Cruz, "Control code generator used for control experiments in ship scale model", in Proc. IFAC Intl. Conf. Control Applications in Marine Systems, Glasgow, U.K., 2001. [13] J.M. Giron-Sierra, S. Esteban, B. De Andres, J.M. Diaz and J.M. Riola,"Experimental study of controlled flaps and T-foil for comfort improvement of a fast ferry", in Proc. IFAC Intl. Conf. Control Applications in Marine Systems, Glasgow, U.K., 2001. [14] S. Esteban, B. Andres-Toro, E. Besada-Portas, J.M. Giron-Sierra and J.M. de la Cruz, “Multiobjective control of flaps and T-foil in high-speed ships”, accepted for the IFAC World Congress, Barcelona, Spain, 2002.0-7803-7386-3https://hdl.handle.net/20.500.14352/60863IEEE International Conference on Control Applications (sep 18-20, 2002. Glasgow, Escocia). The authors would like to thank the Spanish MCYT, “Ministerio de Ciencia y Tecnología”, for their support (project DPI2000-0386-C03-02), the CEHIPAR staff for their cooperation, and IZAR for its recommendations.The vertical motions of fast ships, which have a negative effect on comfort and safety, can be attenuated using moving actuators. There is the need of a control strategy to move the actuators in the most convenient way, considering several objectives. The paper considers this problem, studying a practical real example. Experiments with a scaled down replica of a fast ferry has been done, first for modeling purposes and second for control studies. Linear control shows serious application problems. Taking this into consideration, a nonlinear control approach is devised, with satisfactory results.engbook parthttp://www.dacya.ucm.es/giron/PDF/josemaria.pdfhttp://www.dacya.ucm.es/open access004Ship ControlMarine SystemsNonlinear ControlMultiobjective OptimizationInformática (Informática)1203.17 Informática