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Identification of a nonlinear plant under nonlinear feedback using left coprime fractional based representations

Date

1999

Authors

Linard, N
Anderson, Brian
De Bruyne, Franky

Journal Title

Journal ISSN

Volume Title

Publisher

Pergamon-Elsevier Ltd

Abstract

It has been shown that the set of all nonlinear plants stabilised by a known linear controller, which also stabilises a linear nominal model of the plant, can be parametrised by a stable operator known as the Youla-Kucera parameter. By utilising this description it is possible to convert the closed-loop plant identification problem to one of open-loop identification. This paper extends previous work by allowing the model of the nominal plant and the controller in the above scenario to be nonlinear. The ideas rely on a concept of differential coprimeness for nonlinear fractional system descriptions.

Description

Keywords

Keywords: Closed loop control systems; Feedback; Linear control systems; Mathematical models; Nonlinear systems; System stability; Nonlinear plant; Open loop identification; Youla-Kucera parameter; Parameter estimation

Citation

Source

Automatica

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1016/S0005-1098(98)00185-X

Restricted until

2037-12-31