Regular Papers

International Journal of Control, Automation and Systems 2015; 13(2): 327-335

Published online February 2, 2015

https://doi.org/10.1007/s12555-013-0480-3

© The International Journal of Control, Automation, and Systems

Global Output Feedback Regulation of Uncertain Nonlinear Systems with Unknown Time Delay

Weiyong Yu, Shutang Liu*, and Fangfang Zhang

Shangdong University

Abstract

This paper investigates the problem of global output feedback regulation for a class of nonlinear systems with unknown time delay. It is also allowed to contain uncertain functions of all the states and input as long as the uncertainties satisfying certain bounded condition for the considered systems. In this paper, a constructive control technique has been proposed for controlling the systems. By using dynamic high-gain scaling approach and choosing an appropriate Lyapunov-Krasovskii functional, a delay-independent robust adaptive output feedback controller is constructed such that the states of the considered systems achieve global regulation. Two simulation examples are provided to demonstrate the effectiveness of the proposed design scheme.

Keywords Adaptive control, output feedback, time-delay systems, uncertain nonlinear systems.

Article

Regular Papers

International Journal of Control, Automation and Systems 2015; 13(2): 327-335

Published online April 1, 2015 https://doi.org/10.1007/s12555-013-0480-3

Copyright © The International Journal of Control, Automation, and Systems.

Global Output Feedback Regulation of Uncertain Nonlinear Systems with Unknown Time Delay

Weiyong Yu, Shutang Liu*, and Fangfang Zhang

Shangdong University

Abstract

This paper investigates the problem of global output feedback regulation for a class of nonlinear systems with unknown time delay. It is also allowed to contain uncertain functions of all the states and input as long as the uncertainties satisfying certain bounded condition for the considered systems. In this paper, a constructive control technique has been proposed for controlling the systems. By using dynamic high-gain scaling approach and choosing an appropriate Lyapunov-Krasovskii functional, a delay-independent robust adaptive output feedback controller is constructed such that the states of the considered systems achieve global regulation. Two simulation examples are provided to demonstrate the effectiveness of the proposed design scheme.

Keywords: Adaptive control, output feedback, time-delay systems, uncertain nonlinear systems.

IJCAS
May 2024

Vol. 22, No. 5, pp. 1461~1759

Stats or Metrics

Share this article on

  • line

Related articles in IJCAS

IJCAS

eISSN 2005-4092
pISSN 1598-6446