Abstract
This paper presents a decision support system and its interface, both based on fuzzy and possibility theories, intended for man-machine systems and that has been realized for a teleoperation system. The kinds of assistance useful to the human operator in man-machine systems are first reviewed: this stresses the contribution of a decision support system in such an organization. The necessity to enclose a specific man-machine interface presenting that aid is showed. Then, the steps of the decision support system design are investigated: due to the context of man machine systems, the efficiency of the Fuzzy and Possibility Theories to modelise the aid is obvious. Finally, the application realized dedicated to the teleoperation field is handled, but the strength of this system is its ability to apply to all man machine systems.