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A family of schemes for the control of torque and speed of the induction machine is described. It has been developed with the intention of closing the gap between high dynamic performance drives, requiring measurement of the rotor position or the field, and the simpler schemes with poor dynamic performance. Dynamic behavior and a static accuracy have been achieved which promise a broad range of applications. This is due also to the relative simplicity of the equipment and insensitivity to changes in resistance parameters. Implementation with a voltage source inverter and a current source inverter are shown.