Robust synchronization of a class of chaotic systems based on integral observer method

Using the integral-observer approach, chaos synchronization is achieved for a class of chaotic systems when both the parameters and the output of the system are perturbed. Based on Lyapunov stability theory and LMI technique, we give the sufficient criterion, which can make the drive system and the response system globally exponentially synchronized. In the end, we take MLC chaotic system as an example to verify the effectiveness of the proposed method.