Robust H∞ control via a stable decentralized nonlinear output feedback controller

被引：6

作者：

Harno, Hendra G. ^{[1
]}

Petersen, Ian R. ^{[2
]}

机构：

[1] Univ Cent Florida, Dept Elect Engn & Comp Sci, Orlando, FL 32816 USA

[2] Australian Def Force Acad, Sch Engn & Informat Technol, Canberra, ACT, Australia

来源：

INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL | 2014年 / 24卷 / 02期

基金：

澳大利亚研究理事会;

关键词：

robust H control; stable decentralized control; nonlinear uncertain systems; integral quadratic constraint; global Lipschitz condition; LARGE-SCALE SYSTEMS; UNCERTAIN SYSTEM; STABILIZATION; DESIGN;

D O I：

10.1002/rnc.2879

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents a new method to construct a decentralized nonlinear robust H controller for a class of large-scale nonlinear uncertain systems. The admissible uncertainties and nonlinearities in the system satisfy integral quadratic constraints and global Lipschitz conditions, respectively. The decentralized controller, which is required to be stable, is capable of exploiting known nonlinearities and interconnections between subsystems without treating them as uncertainties. Instead, additional uncertainties are introduced because of the discrepancies between nondecentralized and decentralized nonlinear output feedback controllers. The H control objective is to achieve an absolutely stable closed-loop system with a specified disturbance attenuation level. A solution to this control problem involves stabilizing solutions to algebraic Riccati equations parametrized by scaling constants corresponding to the uncertainties and nonlinearities. This formulation is nonconvex; hence, an evolutionary optimization method is applied to solve the control problem considered. Copyright (c) 2012 John Wiley & Sons, Ltd.

引用

页码：191 / 213

页数：23

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