混沌同步的充分条件及应用  

Sufficient conditions of chaotic synchronization and its applications

作　　者：陈滨[1] 刘光祜[1] 张勇[1] 周正欧[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054

出　　处：《物理学报》2005年第11期5039-5047,共9页Acta Physica Sinica

摘　　要：对两大类常用连续混沌系统,给出了同步的充分条件,以及状态变量的演化范围,对其作了证明,从理论上分析了这些充分条件一定可实现.作为应用,证明了时变参数混沌同步的实现充分条件,并用Chua系统仿真实现.时变参数混沌同步通信具有强抗破译性,也给出其抗破译的仿真.At present time, only necessary conditions of chaotic synchronization are known, and applications of chaotic synchronization is limited. In this paper, sufficient conditions of continuous chaotic system synchronization and the proofs are presented, and evolutive range of state variables is presented, too. We proved the conditions are realizable. As an application of the theory, we proved sufficient conditions of time-varying parameter chaotic synchronization, and made simulations by Chua circuits. Time varying parameter chaotic synchronization communication has high security performance, and the simulations that it defeat all kinds of attacks of eavesdroppers are presented.

关 键 词：条件Lyapunov指数(CLE) Chua电路 参数同步 充分条件 混沌同步 应用 连续混沌系统 时变参数 状态变量 同步通信 证明 破译 

分 类 号：O415.5[理学—理论物理] TP273.2[理学—物理]