Thor I. Fossen

Thor I. Fossen, Mogens Blanke; Nonlinear output feedback control of underwater vehicle propellers using feedback form estimated axial flow velocity, IEEE J. Oceanic Eng., vol. 25, pp. 241 - 255, April 2000.

Euan W. McGookin, David J. Murray-Smith, Yun Li, Thor I. Fossen; Non-linear tanker control system parameter optimisation using genetic algorithms, Proceedings of MTS/IEEE OCEANS'97 Conference, pp. 17 - 22, September 1997.

Ola-Erik Fjellstad, Thor I. Fossen; Position and attitude tracking of AUV's: A quaternion feedback approach, IEEE J. Oceanic Eng., vol. 19, pp. 512 - 518, October 1994.

Svein I. Sagatun, Thor I. Fossen; The Norwegian experimental remotely operated vehicle hydrodynamic properties, Proceedings of the Seventh International Symposium on Unmanned Untethered Submersible Technology, vol. 7, pp. 10 - 19, September 1991.

Thor I. Fossen, Jens G. Balchen; The NEROV Autonomous Underwater Vehicle, Proceedings of IEEE OCEANS'91 Conference, pp. 1414 - 1420, October 1991.


Thor I. Fossen (S'88-M'91) was born in 1963 in Norway. He received the M.Sc. degree in naval architecture and the Ph.D. degree in engineering cybernetics from the Norwegian University of Science and Technology (NTNU), Trondheim, Norway, in 1987 and 1991, respectively.

In the period 1989-1990, he pursued postgraduate studies as a Fulbright Scholar in flight control at the Department of Aeronautics and Astronautics, University of Washington, Seattle. In May 1993, he was appointed as a Professor in Guidance, Navigation and Control with the Department of Engineering Cybernetics at NTNU, where he is currently teaching ship and ROV control systems design, flight control, and nonlinear and adaptive control theory. He is also a Scientific Advisor for ABB Industri AS, Marine Division and Marintek. In cooperation with ABB, he has developed a nonlinear dynamic positioning (DP) system for free-floating and moored ships and a nonlinear and passive state estimator for marine vessels. He has also designed software for identification of ship dynamics from sea-trials. The most outstanding achievement is a weather optimal positioning control for marine vessels minimizing fuel consumption and emission of Co$_x$/NO$_x$ (Patent NO-19985388). He is the designer of the SeaLaunch trim and heel correction systems. SeaLaunch is a free-floating platform built by Boeing-Energia-Kværner from which the first rocket was launced outside Hawaii in March 1999. He is also the author of the book Guidance and Control of Ocean Vehicles (New York: Wiley, 1994) and the co-editor of the book New Directions in Nonlinear Observer Design (London, U.K.: Springer-Verlag, 1999). He has authored more than 100 scientific articles and book chapters on guidance, navigation, and control. He has served as advisor to 11 Ph.D. students and over 80 M.Sc. students.

Prof. Fossen is the Chair of the IEEE Oceanic Engineering/Control Systems Joint Society Chapter of the Norway Section.