A novel robust proportional-integral (PI) adaptive observer design for chaos synchronization

查看全文 作　　者：Mahdi [1]Pourgholi;Vahid Johari [1]Majd

机构地区：[1]Intelligent Control Systems Laboratory,School of Electrical and Computer Engineering,Tarbiat Modares University,Tehran,Iran

出　　处：《Chinese Physics B》索引2011年第20卷第12期,共7页

摘　　要：In this paper,chaos synchronization in the presence of parameter uncertainty,observer gain perturbation and exogenous input disturbance is considered.A nonlinear non-fragile proportional-integral (PI) adaptive observer is designed for the synchronization of chaotic systems;its stability conditions based on the Lyapunov technique are derived.The observer proportional and integral gains,by converting the conditions into linear matrix inequality (LMI),are optimally selected from solutions that satisfy the observer stability conditions such that the effect of disturbance on the synchronization error becomes minimized.To show the effectiveness of the proposed method,simulation results for the synchronization of a Lorenz chaotic system with unknown parameters in the presence of an exogenous input disturbance and abrupt gain perturbation are reported. 关键词：自适应混沌同步观测器设计比例积分 LORENZ混沌系统 PI 线性矩阵不等式参数不确定性输入干扰

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A novel robust proportional-integral (PI) adaptive observer design for chaos synchronization

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