异结构时滞不确定混沌系统的同步/反同步控制及其应用

为了研究具有不同参数的两个不确定时滞混沌系统的同步与反同步控制及在保密通信中的应用,首先对反馈时滞Lorenz混沌系统的系统参数进行重新设计,并引入正弦函数扰动,获得两个具有不同吸引子的时滞混沌系统.采用主动控制方法实现了具有不同参数的时滞混沌系统的同步及反同步控制.为了实现保密通信,将明文信号参与混沌运算,并结合混沌...

Synchronous/Anti-Synchronous Control and Its Application in Delayed Uncertain Chaotic Systems with Different Structure

To study the synchronous and anti-synchronous control and their application in secure communication of uncertain delayed chaotic systems with different system parameters,the parameters of feedback delayed Lorenz chaotic system were redesigned and sine function was introduced as the disturbance,thus two different attractors of time-delay chaotic systems were obtained.An active control method was used to implement the synchronous and anti-synchronous control of the delayed chaotic systems with different structure.To realize secure communication,the original signal was involved in the chaotic signal,and multiple secrecy keys were designed to encrypt the chaotic signal,thus the original signal could be recovered after synchronization/anti-synchroization.The simulation results show that the synchronous control is more robust than anti-synchronous control when noise existed in channel.Therefore,the synchronous control can be used in secure communication for recovering the original signal more rapidly.