A practical approach to disturbance decoupling control

被引：321

作者：

Zheng, Qing ^{[1
]}

Chen, Zhongzhou ^{[2
]}

Gao, Zhiqiang ^{[1
]}

机构：

[1] Cleveland State Univ, Ctr Adv Control Technol, Dept Elect & Comp Engn, Cleveland, OH 44115 USA

[2] Univ Massachusetts, Dept Chem Engn, Amherst, MA 01003 USA

来源：

CONTROL ENGINEERING PRACTICE | 2009年 / 17卷 / 09期

关键词：

Multivariable systems; Disturbance decoupling; Active disturbance rejection; Disturbance observer; Uncertain systems; DESIGN;

D O I：

10.1016/j.conengprac.2009.03.005

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, a unique dynamic disturbance decoupling control (DDC) strategy, based on the active disturbance rejection control (ADRC) framework. is proposed for square multivariable systems. With the proposed method, it is shown that a largely unknown square multivariable system is readily decoupled by actively estimating and rejecting the effects of both the internal plant dynamics and external disturbances. By requiring as little information on plant model as possible, the intention is to make the new method practical. The stability analysis shows that both the estimation error and the closed-loop tracking error are bounded and the error upper bounds monotonously decrease with the bandwidths. Simulation results obtained on two chemical process problems show good performance in the presence of significant unknown disturbances and unmodeled dynamics. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1016 / 1025

页数：10

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