Low-order multi-rate linear time-invariant decentralized trackers using the new observer-based sub-optimal method for unknown sampled-data nonlinear time-delay system with closed-loop decoupling

被引：8

作者：

Hu, N. T. ^{[1
]}

Tsai, J. S. H. ^{[1
]}

Guo, S. M. ^{[2
]}

Shieh, L. S. ^{[3
]}

Chen, Y. ^{[3
]}

机构：

[1] Natl Cheng Kung Univ, Dept Elect Engn, Tainan 701, Taiwan

[2] Natl Cheng Kung Univ, Dept Comp Sci & Informat Engn, Tainan 701, Taiwan

[3] Univ Houston, Dept Elect & Comp Engn, Houston, TX 77204 USA

来源：

OPTIMAL CONTROL APPLICATIONS & METHODS | 2011年 / 32卷 / 04期

基金：

美国国家科学基金会;

关键词：

observer-based sub-optimal method; time-delay; observer/Kalman filter identification; optimal control; digital redesign; INTERCONNECTED SYSTEMS; ADAPTIVE-CONTROL; QUADRATIC CONTROL; ROBUST-CONTROL; STATE; INPUT; DESIGN; CONTROLLER; DISCRETIZATION; UNCERTAINTIES;

D O I：

10.1002/oca.955

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 the low-order multi-rate linear time-invariant decentralized trackers using the new observer-based sub-optimal method for a class of unknown sampled-data nonlinear time-delay system with closed-loop decoupling. For the unknown sampled-data nonlinear time-delay system, we assume that the inner time delay is clearly known. Under this prerequisite, the appropriate (low-) order decentralized linear observer for the unknown sampled-data nonlinear system is determined by the off-line observer/Kalman filter identification (OKID) method with artificial delay input and actual delay output. Then, the above observer has been further improved based on the proposed new observer-based sub-optimal approach. Sequentially, the decentralized tracker with the high gain property is proposed, so that the closed-loop system has the decoupling property. The proposed approach constructs complete mathematics method including the concept of optimal control theory and state-matching digital redesign technique and is quite useful for the complicated interconnected large-scale sampled-data nonlinear time-delay system with unknown system equation. Copyright (C) 2010 John Wiley & Sons, Ltd.

引用

页码：433 / 475

页数：43