Lassaâd Sbita obtained the doctorate thesis onJuly 1997 in Electrical engineering from ESSTT of Tunis, Tunisia. He works as an associate Professor at the electrical-automatic genuis department of the Natioanl Engineering School of Gabès, Tunsia. He is manager of the research group on electric machine drives in the research Unit MACS-ENIG. His fields of interest include power electronics, machine drives, automatic control, modeling, observation and identication.