Synchronizing chaos by impulsive feedback method

In this letter, the impulsive feedback synchronization method is suggested. Synchronization condition is given by investigating the mechanism of the i mpulsive feedback synchronization. Furthermore, we consider the influences of noise and parameter mismatch since they inevitably exist in the practica l experiment. Finally, a visual circuit implementation of impulsive feedbac k synchronization is performed. The research demonstrates that impulsive op erator can spread frequency spectrum of chaotic solution. Impulsive feedbac k can synchronize chaotic systems and has the robustness to noise and param eter mismatch. It shows the potential application in chaotic communication.