Stability analysis for nonlinear feedback control systems with linear actuators

Author

Fang, Jian´an ; Gu, Guoxiang ; Liu, Kang-Zhi

Author_Institution

Dept. of Electr. Autom., Donghua Univ., Shanghai, China

Volume

48

Issue

4

fYear

2003

fDate

4/1/2003 12:00:00 AM

Firstpage

649

Lastpage

654

Abstract

Often, nonlinear feedback controllers are implemented with linear actuators, which have faster dynamics when compared with non-linear dynamics of the plant and controller models. However, how faster should the dynamics of the linear actuator be to ensure stability of the given nonlinear feedback control system? This note gives an analysis for the underlying stability issues and provides quantitative measures for the linear actuators employed in nonlinear feedback control systems.

Keywords

actuators; asymptotic stability; closed loop systems; control system analysis; feedback; linear systems; nonlinear control systems; BIBO stability; bounded-input-bounded-output stability; dynamics; input-to-state stability; linear actuators; nonlinear feedback control systems; quantitative measures; singular perturbed systems; small gain theorem; stability analysis; Eigenvalues and eigenfunctions; Feedback control; Hydraulic actuators; MATLAB; Mathematics; Notice of Violation; Packaging; Spectral analysis; Stability analysis; Stochastic processes;

fLanguage

English

Journal_Title

Automatic Control, IEEE Transactions on

Publisher

ieee

ISSN

0018-9286

Type

jour

DOI

10.1109/TAC.2003.809777

Filename

1193749