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.