Dual synchronization of chaotic systems via time-varying gain proportional feedback

In this paper the dual synchronization of chaotic systems via output feedback strategy is investigated. The slave chaotic systems are fed by a scalar signal generated by a linear combination of the master systems state variables. The sufficient condition and design procedure for dual synchronization are presented. The proposed method is applied for dual synchronization of the Lorenz-Rossler, Rossler-Chen and Duffing-Van der Pol chaotic systems through computer simulation. The results show the effectiveness and feasibility of the proposed algorithm.