Eur. Phys. J. Spec. Top. (2022) 231: 4007-4015
https://doi.org/10.1140/epjs/s11734-022-00632-4

Regular Article

Network dynamics of coupled Chua circuits: comparison of different coupling elements

¹ School of Electronic Engineering, Changzhou College of Information Technology, 213164, Changzhou, China
² Nonlinear Systems and Applications, Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam
³ School of Microelectronics and Control Engineering, Changzhou University, Changzhou, China

^b phamvietthanh@tdtu.edu.vn

Received: 2 April 2022
Accepted: 21 June 2022
Published online: 4 July 2022

Abstract

The dynamics of coupled chaotic circuits have particular importance in many applications. The Chua circuit is a well-known chaotic circuit that has been applied in various studies. In this paper, we investigate the network of Chua circuits in different coupling schemes. We consider three cases where the circuits are coupled through resistors, memristors, and inductors. The synchronization behavior of the network is examined for each case. It is observed that the nonstationary chimera is formed in coupled circuits in all coupling schemes. Complete synchronization can be achieved only in resistive coupling. In memristive coupled circuits, increasing the coupling strength leads to the instability of the network, while in the inductor coupling, the synchronization appears only among two variables, and the third variable cannot be synchronized.