An Adaptive Observer with Reduced Order for Chaotic Duffing System Transmitting a Vector of Parameters*

This paper deals with the problem of reconstruction of unknown encoded vector that is solved by means of procedure of adaptive observer design for chaotic Duffing system. Unlike existing analogues, this problem is solved using measurements of the output of chaotic system and in conditions of full parametric uncertainty. Compared with previous papers this one presents a new parameterization scheme that allows to decrease the order of the adaptive observer for general class of a chaotic systems.