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Robust trajectory tracking for incrementally passive nonlinear systems
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DOI：10.1016/j.automatica.2019.05.065.png)
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Abstract
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In this paper, we study the robust trajectory tracking problem for a class of nonlinear systems with incremental passivity. The velocity of the desired trajectory and parts of the model information are unknown apart from boundedness assumptions. A velocity observer based method and a sliding mode controller are proposed while the asymptotic tracking result is guaranteed by a zero-state detectability condition for both cases. Unlike previous results, the studied systems are not necessarily feedback linearizable nor in a strict feedback form. The ball and beam system is utilized to illustrate the implementation of the proposed tracking control laws. (C) 2019 Elsevier Ltd. All rights reserved.
Keywords:
Incremental passivity
Trajectory tracking
Robust control
Port-Hamiltonian systems
Asymptotic stability
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