Abstract
The purpose of this paper is to solve a global asymptotic stabilization problem for a nonlinear control system on a Riemannian manifold. As well known, a system on a noncontractible manifold is not globally asymptotically stabilizable via a C 1 feedback law. This problem results from the existence of multiple singular points of such a controlled system. It is shown that if all the singular points can be assigned to a subset of the extended state space using a dynamic compensator and a C 0 feedback, then the original system becomes globally asymptotically stable. Moreover, a method for stabilization is developed using a dynamic compensator and a global control Lyapunov function for an input-affine system. Finally, we propose a method for constructing the control Lyapunov function for a controllable system.
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