Lag projective stochastic perturbation synchronization of chaotic systems

In this letter, the projective synchronization for two different chaotic systems with unknown parameters is studied. The system under consideration is subjected to delayed state and stochastic perturbation. By combining the adaptive control method and feedback control technique, we design a suitable nonlinear controller, and derive parameters update law to achieve lag projective stochastic perturbation synchronization of chaotic systems. Moreover, the unknown parameters can be efficiently estimated according to the rigorous and systematic scheme. The corresponding simulation results are given to verify the effectiveness of the proposed method.