In this paper performance evaluation of three fault-tolerance controllers based on the following control techniques: hyperbolic sine and hyperbolic cosine, calculated torque, and adaptive inertia; applied to manipulator robots is presented. Various tests are developed in a simulation environment, which is developed by employing MatLab/Simulink programming tools, when the manipulator must follow a desired trajectory and one of its actuators is locked. The results are obtained by means of curves and rms index of joint and Cartesian errors for each controller.
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Urrea et al. (2013) studied this question.