A Software Tool for Robust PID Design

Olof Garpinger, Tore Hägglund

Research output: Contribution to conferencePaper, not in proceedingpeer-review

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Abstract

This paper presents a fast, interactive and easily modifiable software tool for robust PID design. The Matlab based program is supposed to give people with moderate knowledge on PID control a possibility to learn more and also be a future part of an autotuner. The PID design is made by minimizing the integrated absolute error value during a load disturbance on the process input. The optimization is performed with H-infinity constraints on the sensitivity and complementary sensitivity function, providing a robust closed loop system. Nelder Mead optimization is used with the AMIGO method providing an initial controller. The proposed method works well, and is very efficient, on a large batch of systems common in process industry.

The design tool is also shown to work on a highly oscillatory process model.
Original languageEnglish
Publication statusPublished - 2008
Event17th IFAC World Congress, 2008 - Seoul, Korea, Seoul, Korea, Democratic People's Republic of
Duration: 2008 Jul 62008 Jul 11
Conference number: 17

Conference

Conference17th IFAC World Congress, 2008
Country/TerritoryKorea, Democratic People's Republic of
CitySeoul
Period2008/07/062008/07/11

Subject classification (UKÄ)

  • Control Engineering

Free keywords

  • Process Control
  • PID Control
  • Disturbance rejection
  • Algorithms and software
  • Autotuning
  • Robust control

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