CHAOS SYNCHRONIZATION OF AN UNCERTAIN LORENZ HYPERCHAOTIC SYSTEM VIA A MODIFIED ADAPTIVE METHOD

A modified adaptive control scheme for synchronization of an uncertain Lorenz hyperchaotic system is proposed. Based on the Lyapunov stability theory, the sufficient condition for the synchronization is analyzed and proved theoretically. With the condition derived, parameter identification and synchronization of the Lorenz hyperchaotic system with all the unknown system parameters can be achieved simultaneously. Numerical simulations are presented to illustrate the effectiveness of the proposed synchronization scheme.