非线性干扰观测器方法实现受扰混沌系统同步

摘要

In this paper,the synchronization problem of chaos system with parameter uncertainities and externalrndisturbances was investigated. Nonlinear disturbance observer was used to compensate compound disturbancerndynamically, including internal parameters variation and external disturbances. The output of the nonlinearrndisturbance observer was then used to design a compensation control law to cancel the system uncertainties.rnNumerical simulations show that the nonlinear disturbance observer can approach the compound disturbancesrnand reduce the output of the controller.%研究了一类具有参数摄动和外界干扰的混沌系统的同步控制问题.将系统的内部参数变化和外部干扰总称为复合干扰,用一种非线性干扰观测器对复合干扰进行在线观测估计,并将干扰观测器的输出用于设计动态补偿控制器以抵消不确定性对系统性能的影响.仿真结果表明:本文设计的非线性干扰观测器能很好的逼近复合干扰,减小控制器的输出,改善系统的控制性能.