A Global Terminal Adaptive Synchronization for the Modified Chua's Circuits with Input Uncertainties and Unknown Parameters

A global terminal adaptive controller is designed for the modified Chua’s circuits with iuput uncertainties and unknown parameters, and the synchronization is achieved in finite time by adopting the concept of global terminal control. It can be concluded that the synchronization can achieved successfully with the assumption that the sign of uncertain parameter of input is known. And the parameters can be estimated accurately when the number of parameters satisfies some conditions, otherwise the synchronization can achieved but the parameters can’t be estimated effectively. At last, the numerical simulation shows the effectiveness of this proposed method and the conclusions.