Research Article Multisynchronization of Chaotic Oscillators via Nonlinear Observer Approach

Copyright © 2014 Ricardo Aguilar-López et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The goal of this work is to synchronize a class of chaotic oscillators in a master-slave scheme, under different initial conditions, considering several slaves systems.The Chen oscillator is employed as a benchmark model and a nonlinear observer is proposed to reach synchronicity between themaster and the slaves ’ oscillators.The proposed observer contains a proportional and integral form of a bounded function of the synchronization error in order to provide asymptotic synchronizationwith a satisfactory performance. Numerical experiments were carried out to show the operation of the considered methodology. 1