Decentralized adaptive output-feedback controller design for stochastic nonlinear interconnected systems

被引：66

作者：

Fan, Huijin ^{[1
]}

Han, Lixia ^{[1
]}

Wen, Changyun ^{[2
]}

Xu, Li ^{[3
]}

机构：

[1] Huazhong Univ Sci & Technol, Dept Control Sci & Engn, Key Lab Image Proc & Intelligent Control, Wuhan 430074, Peoples R China

[2] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore, Singapore

[3] Akita Prefectural Univ, Dept Elect & Informat Syst, Akita, Japan

来源：

AUTOMATICA | 2012年 / 48卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Decentralized control; Adaptive control; Stochastic nonlinear systems; Interconnected systems; TRACKING; STABILIZATION;

D O I：

10.1016/j.automatica.2012.08.022

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, the controller design for a class of stochastic interconnected systems with both parametric uncertainties and unknown nonlinear interactions is presented. The diffusion terms considered are dependent on the outputs of local subsystems and allowed to be unbounded. First, by employing decentralized state observers, totally decentralized adaptive tracking controllers with suitable parameter adaptive laws are designed to ensure the boundedness in probability of all the signals in the closed-loop system. It is shown that the tracking errors converge to small residual sets around the origin. Then, for systems with relaxed diffusion vector fields, a decentralized adaptive stabilizing scheme is proposed to ensure the boundedness in probability of all signals in the closed-loop system. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：2866 / 2873

页数：8

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