Khaled ELLEUCH, obtained the master on January 1996 in the field of electric genius from the Superior school of the Sciences and Techniques of Tunis, Tunisia. He works as a technologist in the electrical department of the Superior Institute of the Technological Studies in Sousse, Tunisia. He is member of the research group on Automatic Control (UCA) of ENIS, Sfax. He prepares, actually, a thesis of doctorate on automatic control in the theme: identification and adaptive control of nonlinear systems (applications: DC Motor, thermal systems..).