Robust direct adaptive control with least prior knowledge

Author

Feng, Gang

Author_Institution

Sch. of Electr. Eng., New South Wales Univ., Kensington, NSW, Australia

Volume

42

Issue

1

fYear

1995

fDate

1/1/1995 12:00:00 AM

Firstpage

30

Lastpage

34

Abstract

A new, robust, discrete time, singularity-free, direct adaptive-control scheme is proposed with respect to a class of modeling uncertainties in this paper. Two key features of this scheme are that a relative dead zone is used, but no knowledge of the parameters of the upper bounding function on the class of modeling uncertainties is required, and no knowledge of the lower bound on the leading coefficient of the parameter vector is required to ensure the control law singularity free. Global stability and convergence results of the scheme are provided

Keywords

adaptive control; control system analysis; convergence; discrete time systems; least squares approximations; parameter estimation; robust control; control law; convergence; discrete time singularity-free scheme; global stability; least prior knowledge; modeling uncertainties; parameter vector; relative dead zone; robust direct adaptive control; upper bounding function; Adaptive control; Australia Council; Control systems; Convergence; Parameter estimation; Poles and zeros; Robust control; Stability; Uncertainty; Upper bound;

fLanguage

English

Journal_Title

Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/81.350795

Filename

350795