ANTI-SYNCHRONIZATION OF HYPERCHAOTIC
WANG AND HYPERCHAOTIC LI SYSTEMS WITH
UNKNOWN PARAMETERS VIA ADAPTIVE CONTROL
International Journal of Computer Science, Engineering and Information Technology (IJCSEIT), 3 (2):
31-50 (April 2013)DOI: 10.5121/ijcseit.2013.3203
Abstract
In chaos theory, the problem anti-synchronization of chaotic systems deals with a pair of chaotic systems
called drive and response systems. In this problem, the design goal is to drive the sum of their respective
states to zero asymptotically. This problem gets even more complicated and requires special attention when
the parameters of the drive and response systems are unknown. This paper uses adaptive control theory
and Lyapunov stability theory to derive new results for the anti-synchronization of hyperchaotic Wang
system (2008) and hyperchaotic Li system (2005) with uncertain parameters. Hyperchaotic systems are
nonlinear dynamical systems exhibiting chaotic behaviour with two or more positive Lyapunov exponents.
The hyperchaotic systems have applications in areas like oscillators, lasers, neural networks, encryption,
secure transmission and secure communication. The main results derived in this paper are validated and
demonstrated with MATLAB simulations.