This study deals with the application of sliding mode control theory to induction machine fed by a PWM voltage source inverter in which the system operates in the field oriented control. Thus, after determining the decoupled model of the machine, a set of simple surfaces have been applied to a cascade structure and the associated control laws have been synthesized. Furthermore, in order to reduce chattering phenomenon, smooth control functions with appropriate threshold have been chosen. Simulation study is conducted to show the effectiveness of the proposed method and then validated by an experimental prototype.