Practical stability and stabilization of hybrid and switched systems

In this note, practical stability and stabilization problems for hybrid and switched systems are studied. The main results of this note include a direct method for the /spl epsi/-practical stability analysis of hybrid systems and sufficient conditions for the practical stabilizability of switched systems. We construct an /spl epsi/-practically stabilizing switching law in the proof of the practical stabilizability result and apply it to a tracking problem to show its effectiveness.