Improved stable approximants using the Routh array

Author

Singh, Vimal

Author_Institution

University of Basrah, Basrah, Iraq

Volume

Issue

fYear

1981

fDate

4/1/1981 12:00:00 AM

Firstpage

581

Lastpage

583

Abstract

A simple method for obtaining a stable reduced-order ( $k$ th-order) approximant $G_{k}(s)$ for a stable hlgh-order ( $n$ th-order) transfer function $G(s)$ is described. The method is an improvement over some previous methods [1], [2] in that it not only ensures matching of the first $k$ time moments of $G(s)$ and $G_{k}(s)$ , but it also ensures that the ( $k+1$ )th time moment of $G_{k}(s)$ be as close as possible to the corresponding value in $G(s)$ .

Keywords

Approximation methods; Reduced-order systems, linear; Routh methods, linear systems; Transfer functions; Equations; Helium; Stability criteria; Transfer functions;

fLanguage

English

Journal_Title

Automatic Control, IEEE Transactions on

Publisher

ieee

ISSN

0018-9286

Type

jour

DOI

10.1109/TAC.1981.1102643

Filename

1102643

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=835583