On Robust and Adaptive Synchronization of Chaotic Systems

In this paper,the problem of robust (adaptive) synchronization of chaotic nonlinear systems with a unified model is considered.Two main methods are proposed in different cases.Sliding mode control is used when the states of the two synchronized systems can be measured,though the considered systems may contain uncertain parts.Adaptive control with an observer is employed when only output information about the systems is known,where sliding mode control is also adopted to improve the robustness of the adaptive control systems.