1 Introduction
Recently, the dynamical behaviors of complex networks have been widely investigated. In particular, lots of researchers have discussed the synchronization problem for complex networks, and many important results have been presented [1]–[3]. In[1], Feng et al. considered the stochastic synchronization of coupled neural networks based on Kronecker product and Lyapunov functional method. Wang et al. [2] studied the synchronization for a coupled reaction-diffusion neural networks by utilizing the output strict passivity. In [3], Lu et al. proposed some criteria for ensuring the synchronization by designing appropriate pinning controllers.