摘要
混沌同步是实施混沌保密通讯的基础,非线性反馈是实现混沌同步的重要方法。蔡氏混沌电路及变型蔡氏混沌电路是应用广泛的混沌模型之一。对变型蔡氏电路混沌同步设计了非线性反馈同步控制器;根据Hurwitz稳定性判据得到反馈控制增益的取值范围。基于该方法,构建了实现混沌系统同步控制的实验电路,系统仿真和电路实验结果表明采用非线性反馈控制可以保证实现变型蔡氏电路混沌系统一致指数同步化。
Chaos synchronization is a basic technique for secure communication, and nonlinear feedback control is an important approach to achieve chaos synchronization. Both Chua＇s circuit and modified Chua＇s circuit are chaotic models widely applied. A nonlinear feedback controller is designed for chaos synchronization in modified Chua＇ s circuits. The range of feedback coefficient is obtained using the Hurwitz stability theorem. Based on the method of nonlinear feedback control, the circuit design is implemented in laboratory. The results of numerical simulation and circuit experiment show that chaos is synchronized uniformly exponentially in modified Chua＇s circuits via a single variable of nonlinear feedback control.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2005年第8期1448-1451,共4页
Systems Engineering and Electronics
基金
教育部高校博士点基金(20030286013)
江苏省自然科学基金(02KJD140015)资助课题
