中文摘要：

当混沌系统参数不确定时,采用自适应控制方法,研究了系统间的时滞同步问题。基于Lyapunov稳定性理论,给出了同步条件,并识别出了系统的未知参数。理论推导严格证明了结果的正确性;同时,以Lorenz系统为例进行了数值仿真与说明。

英文摘要：

When parameters of chaotic systems are uncertain,by using the adaptive control method,this paper investigates the problem of lag synchronization of systems.Based on Lyapunov stability theory,the conditions for synchronization are proposed.Moreover,the unknown parameters are identified finely.The effectiveness of results driven here is proved.In addition,the Lorenz system is taken for illustration.