# Hidden and self-excited attractors in Chua circuit: SPICE simulation and synchronization

## TL;DR

This paper investigates the synchronization of two Chua circuits using SPICE simulations, highlighting challenges in control signal selection due to multistability and hidden attractors in chaotic systems.

## Contribution

It demonstrates the complexities of synchronizing chaotic circuits with hidden and self-excited attractors, emphasizing the difficulties in control signal design.

## Key findings

- Synchronization achieved in SPICE simulations
- Control signal selection is complex with multistability
- Hidden attractors pose challenges for synchronization

## Abstract

Nowadays various chaotic secure communication systems based on synchronization of chaotic circuits are widely studied. To achieve synchronization, the control signal proportional to the difference between the circuits signals, adjust the state of one circuit. In this paper the synchronization of two Chua circuits is simulated in SPICE. It is shown that the choice of control signal is be not straightforward, especially in the case of multistability and hidden attractors.