Anti-windup Disturbance Feedback Control: Practical Design with Robustness

Fukiko Kawai, Kasper Vinther, Palle Andersen, Jan Dimon Bendtsen

Research output: Contribution to journalJournal articleResearchpeer-review

10 Citations (Scopus)

Abstract

This paper presents a practical design method of robust disturbance feedback control (DFC) along with an application to industrial refrigeration systems. DFC is a controller configuration in which an existing controller is augmented with an additional loop. The design method for DFC is proposed in two steps; firstly, the robust DFC without saturation is designed by a linear matrix inequality (LMI) approach, and then LMI techniques are used again for designing an anti-windup compensator to accommodate actuator saturation. The proposed method is compared to a conventional design on a water chiller system, both in simulation and through practical experiments. The test results indicate that both robustness and performance can be improved in the presence of model uncertainties, and the proposed method can avoid wind-up phenomena when the control inputs are saturated.

Original languageEnglish
JournalJournal of Process Control
Volume69
Pages (from-to)30-43
Number of pages14
ISSN0959-1524
DOIs
Publication statusPublished - Sept 2018

Keywords

  • Anti-windup
  • Disturbance rejection
  • Linear matrix inequalities
  • Refrigeration systems
  • Robust control

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