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Published June 2011 | Published
Journal Article Open

Lyapunov constraints and global asymptotic stabilization

Abstract

In this paper, we develop a method for stabilizing underactuated mechanical systems by imposing kinematic constraints (more precisely Lyapunov constraints). If these constraints can be implemented by actuators, i.e., if there exists a related constraint force exerted by the actuators, then the existence of a Lyapunov function for the system under consideration is guaranteed. We establish necessary and sufficient conditions for the existence and uniqueness of constraint forces. These conditions give rise to a system of PDEs whose solution is the required Lyapunov function. To illustrate our results, we solve these PDEs for certain underactuated mechanical systems of interest such as the inertia wheel-pendulum, the inverted pendulum on a cart system and the ball and beam system.

Additional Information

© 2011 American Institute of Mathematical Sciences. Received: October 2010; Revised: June 2011; Published: July 2011. Communicated by Manuel de León. S. Grillo thanks CONICET and Fulbright Commission for their financial support and the personnel at the Control and Dynamical Systems department at Caltech for their kind hospitality.

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August 22, 2023
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