PID control with robust disturbance feedback control

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

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

4 Citations (Scopus)

Abstract

Disturbance Feedback Control (DFC) is a technique, originally proposed by Fuji Electric, for augmenting existing control systems with an extra feedback for attenuation of disturbances and model errors. In this work, we analyze the robustness and performance of a PID-based control system with DFC. A multiplicative uncertainty model is used to represent mismatch between a nominal model and the actual plant, and expressions for robust stability, nominal and robust performance are derived. We propose a simple grid-based search algorithm that can be used to find DFC gains to achieve robust stability and performance (if such gains exist). Finally, two different simulation case studies are evaluated and compared. Our numerical studies indicate that better performance can be achieved with the proposed method compared with a conservatively tuned PID controller and comparable performance can be achieved when compared with an H-infinity controller.
Original languageEnglish
Title of host publicationProceedings of the 2015 IEEE Conference on Control Applications
Number of pages6
PublisherIEEE Computer Society Press
Publication date21 Sept 2015
Pages1223 - 1229
Article numberTuC05.1
ISBN (Electronic)978-1-4799-7787-1
DOIs
Publication statusPublished - 21 Sept 2015
Event2015 IEEE Conference on Control Applications (CCA) - Sydney, Australia
Duration: 21 Sept 201523 Sept 2015

Conference

Conference2015 IEEE Conference on Control Applications (CCA)
Country/TerritoryAustralia
CitySydney
Period21/09/201523/09/2015
SeriesIEEE International Conference on Control Applications
Volume2015

Keywords

  • PID control
  • Linear robust control
  • Control applications

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