We are concerned in this article with the control of wheeled mobile robots, which constitute a class of nonholonomic mech anical systems. More precisely, we are interested in solving the problem of tracking with stability of a reference trajectory, by means of linearizing "static" and "dynamic" state feedback laws. We give conditions to avoid possible singularities of the feedback laws.
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d’Andréa-Novel et al. (1995) studied this question.
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