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In this paper we prove that the nonlinear benchmark RTAC example is semi-globally stabilizable using output feedback when the angle of the proof mass and/or the translational position of the cart are considered as the output. The proposed result complements previous work which requires exact knowledge of the translational and/or angular velocities but achieves global stabilization.
An improvement over classical dynamic feedback linearization for the control of a nonholonomic mobile robot is proposed. The use of a state extension of higher dimension than in the case of dynamic feedback linearization helps reject constant disturbances on the rotational axis of the robot. The proposed dynamic extension acts as a velocity scheduler for the robot. It specifies at each time instant...
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