Robustness of synchronization in coupled Chua's circuits

This paper addresses the robustness in synchronization by perturbating the system parameters. Both mutually and unidirectionally coupled Chua's circuits have been used for this investigation. The results obtained from numerical computation have been found that the coupled systems is in its most robust form when the state variable z only is used for coupling, whereas the state variable z is found to be otherwise. This paper reports a thorough investigation into the effectiveness of the parametric variations and a number of critical regions have been defined for the classification of the chaos within the context of synchronization.