This paper presents a robust control system over the induction motor based on the H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">infin</sub> and loop shaping procedure. It has a set of simples steps to design the linear control law, the model used is the rotor-flux oriented coordinated system and is linearized by the Taylor's series. Finally the output feedback controller test shows the performance of the drive in presence of disturbances.