Some new results on anti-windup-conditioning using the Weston-Postlethwaite approach

G Herrmann, MC Turner, I Postlethwaite

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

31 Citations (Scopus)

Abstract

Anti-windup (AW) compensation, commonly used to counteract performance and stability problems due to saturation non-linearities in the actuator of primarily linear control systems, is revisited in terms of the approach of Weston & Postlethwaite (W&P). Their parameterization consists of a filter M and a linear model of the plant dynamics. Several consecutive results have been obtained: First, the W&P-approach is extended to a more generic, recently established L/sub 2/-problem formulation for AW-compensator design; second, it is shown that the most suitable choice for M is based on a plant coprime factorization; third, it is proved that the coprime factorization technique can achieve optimal performance once the designer intends to recover nominal linear controller performance for a a reasonably generic class of linear control problems. This significantly facilitates the L/sub 2/-design of full-order AW compensators. As a final result, linear matrix inequality (LMI)-design conditions for this AW-configuration are provided.
Translated title of the contributionSome new results on anti-windup-conditioning using the Weston-Postlethwaite approach
Original languageEnglish
Title of host publication43rd IEEE Conference on Decision and Control, Bahamas
Pages5047 - 5052
Publication statusPublished - 2004

Bibliographical note

Conference Organiser: IEEE
Other identifier: 10.1109/CDC.2004.1429607

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