Dynamic output feedback control for fast sampling discrete-time singularly perturbed systems

被引：24

作者：

Liu, Wei ^{[1
]}

Wang, Zhiming ^{[1
]}

Dai, Haohui ^{[1
]}

Naz, Mehvish ^{[1
]}

机构：

[1] East China Normal Univ, Dept Math, Shanghai 200241, Peoples R China

来源：

IET CONTROL THEORY AND APPLICATIONS | 2016年 / 10卷 / 15期

基金：

美国国家科学基金会;

关键词：

feedback; control system synthesis; sampling methods; discrete time systems; singularly perturbed systems; linear matrix inequalities; Riccati equations; fast-sampling discrete-time singularly-perturbed systems; sufficient conditions; slow-subsystems; fast-subsystems; controller gains; coefficient matrices; LMI; Riccati-based solutions; composite dynamic output feedback control design; full-order discrete-time singularly-perturbed system stabilisation; H-INFINITY CONTROL; DESIGN;

D O I：

10.1049/iet-cta.2016.0121

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 study is concerned with the dynamic output feedback control problem for fast sampling discrete-time singularly perturbed systems using the singular perturbation approach. Sufficient conditions in terms of linear matrix inequalities (LMIs) are presented to guarantee the existence of a dynamic output feedback controller for the corresponding slow and fast subsystems, respectively. The controller gains and the corresponding coefficient matrices can be obtained via solving the proposed LMIs. Thus, not only the high dimensionality and the ill condition are alleviated, but also the regularity restrictions attached to the Riccati-based solutions are avoided. The theoretical result demonstrates that the composite dynamic output feedback control designed through those of the slow and fast subsystems can stabilise the full-order discrete-time singularly perturbed systems. Finally, two real world practical examples are provided to show the effectiveness of the obtained results.

引用

页码：1782 / 1788

页数：7

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