Projective synchronization in drive-response dynamical networks

In this paper, the projective synchronization (characterized by a scaling factor a ) in the drive-response dynamical networks whose each node is the parts of four-dimensional hyperchaotic system is studied. Using pinning control for small fraction of nodes in all the drive-response dynamical networks direct the scaling factor onto the desired value. A synchronous criterion ensuring projective synchronization in the drive-response dynamical networks is obtained. To verify the correctness of the synchronous criterion some numerical simulations are given.