Adaptive output-feedback control for MIMO nonlinear systems with time-varying delays using neural networks  

作　　者：Weisheng Chen Ruihong Li 

机构地区：[1]Department of Applied Mathematics, Xidian University, Xi'an 710071, E R. China

出　　处：《Journal of Systems Engineering and Electronics》2010年第5期850-858,共9页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China (60804021);the Fundamental Research Funds for the Central Universities (JY10000970001)

摘　　要：An adaptive neural network output-feedback regulation approach is proposed for a class of multi-input-multi-output nonlinear time-varying delayed systems.Both the designed observer and controller are free from time delays.Different from the existing results,this paper need not the assumption that the upper bounding functions of time-delay terms are known,and only a neural network is employed to compensate for all the upper bounding functions of time-delay terms,so the designed controller procedure is more simplified.In addition,the resulting closed-loop system is proved to be semi-globally ultimately uniformly bounded,and the output regulation error converges to a small residual set around the origin.Two simulation examples are provided to verify the effectiveness of control scheme.An adaptive neural network output-feedback regulation approach is proposed for a class of multi-input-multi-output nonlinear time-varying delayed systems.Both the designed observer and controller are free from time delays.Different from the existing results,this paper need not the assumption that the upper bounding functions of time-delay terms are known,and only a neural network is employed to compensate for all the upper bounding functions of time-delay terms,so the designed controller procedure is more simplified.In addition,the resulting closed-loop system is proved to be semi-globally ultimately uniformly bounded,and the output regulation error converges to a small residual set around the origin.Two simulation examples are provided to verify the effectiveness of control scheme.

关 键 词：neural network OUTPUT-FEEDBACK nonlinear time-delay systems backstepping. 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TM343[自动化与计算机技术—控制科学与工程]