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This work presents an alternative to the robust control design for the angular speed and the flux module in three-phase induction motors. The proposed controller is based in the canonical form technique using the third-order quasi-continuo control algorithm. The controller incorporates an observer which is based on the high-order sliding-mode control technique. A robust differentiator is employed for estimate the second derivative of the sliding manifold. The controller provides high features of accuracy, robustness and convergence in finite time. The performance of the proposed controller, are verified by digital simulation.