Robust synthesis of feedforward compensators

Author

Giusto, Alvaro ; Paganini, Fernando

Author_Institution

Fac. de Ingenieria, Univ. de la Republica, Montevideo, Uruguay

Volume

44

Issue

8

fYear

1999

fDate

8/1/1999 12:00:00 AM

Firstpage

1578

Lastpage

1582

Abstract

The design of a feedforward compensator for robust ℋ_∞ or ℋ₂ performance under structured uncertainty is considered. For linear time-invariant uncertainty, a convex method based on linear matrix inequalities (LMIs) across the frequency variable is given. For nonlinear or time-varying perturbations and ℋ_∞ performance, the design problem is reduced exactly to a state-space LMI, and extensions to ℋ₂ performance are discussed. An example illustrates the application of these techniques to two-degree-of-freedom control design

Keywords

H^∞ control; compensation; control system synthesis; feedforward; frequency-domain analysis; linear systems; nonlinear systems; robust control; state-space methods; time-varying systems; uncertain systems; H_∞ control; feedforward compensators; frequency domain analysis; linear matrix inequality; linear time-invariant systems; nonlinear systems; robust control; state space; state-space; structured uncertainty; time varying systems; Centralized control; Control design; Control system synthesis; Frequency; Linear matrix inequalities; Output feedback; Robust control; Robustness; Stability; Uncertainty;

fLanguage

English

Journal_Title

Automatic Control, IEEE Transactions on

Publisher

ieee

ISSN

0018-9286

Type

jour

DOI

10.1109/9.780425

Filename

780425