本文研究了离散非线性系统的混沌同步问题,即驱动系统为x(k+1)=f(x(k)),响应系统为x(k+1)=f(x(k))+u(k)构成的混沌系统的同步问题。基于Lyapunov稳定性理论给出了控制律的设计,选取控制律u(k)=-e(k+1)下,得到系统的Lyapunov函数一阶差分AV〈0,从而离散非线性系统及其时滞系统是混沌同步的,数值算例结果表明系统的误差曲线趋于同步,从而说明了该方法的有效性。
Chaos synchronization always is hot research topics in the area of nonlinear science for it is important merits and broad ap- plication prospects in engineering technology. The problem of chaos synchronization for discrete nolinear system is based on Lya- punov stability theory. The drive system isx(k+1) = f(x(k)) , the response system is, 5:(k+1) = f(x(k))+u(k) . The conclu- sion is arrived that nolinear system is chaos synchronized under appropriate controlling law u(k) = -e(k + 1) . Numerical simula- tions example of chaotic system verify the Lyapunov function differential △V〈0, it prove the effectiveness of the proposed method.