Direct reduced order discretization of continuous-time controller

Author

Anderson, B.D.O. ; Chongsrid, K. ; Limebeer, D.J.N. ; Hara, S.

Author_Institution

Dept. of Syst. Eng., Australian Nat. Univ., Canberra, ACT, Australia

Volume

1

fYear

1996

fDate

11-13 Dec 1996

Firstpage

895

Abstract

The problem of closed-loop approximation of a continuous-time controller by a low order discrete-time controller is investigated. The operator representing the error in approximation can be approximated (arbitrarily closely) by a time-invariant discrete-time system resulting from applying fast sampling and lifting. We propose a method for obtaining a low-order discrete-time controller which makes small the approximation error based on recasting the approximation problem as a four-block H_∞ problem

Keywords

closed loop systems; continuous time systems; reduced order systems; sampled data systems; closed-loop approximation; continuous-time controller; direct reduced order discretization; fast sampling; four-block H_∞ problem; lifting; low order discrete-time controller; time-invariant discrete-time system; Approximation error; Australia; Control systems; Educational institutions; Feedback control; Open loop systems; Sampling methods; Stability; System analysis and design; Systems engineering and theory;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 1996., Proceedings of the 35th IEEE Conference on

Conference_Location

Kobe

ISSN

0191-2216

Print_ISBN

0-7803-3590-2

Type

conf

DOI

10.1109/CDC.1996.574549

Filename

574549