ROBUST DELAY-DEPENDENT α-SYNCHRONIZATION OF A CLASS OF UNCERTAIN NOISE-PERTURBED TIME-DELAYED CHAOTIC AND HYPER-CHAOTIC SYSTEMS

摘要

In this paper, a robust delay-dependent a-synchronization via output feedback for a class of uncertain noise-perturbed time-delayed chaotic systems with unequally perturbed parameters is considered. Based on the Lyapunov-Krasovskii stability theorem and linear matrix inequality (LMI) technique, a criterion is obtained to guarantee that the slave system is robustly asynchronized to the master system, and the effects of noise perturbation on the synchronization error are attenuated to a prescribed level by using an Hoo performance index. Finally, numerical simulations on chaotic and hyper chaotic systems are presented to show the effectiveness of the proposed synchronization scheme.