Double First-Order Plus Time Delay Models to Tune Proportional-Integral Controllers

Yongjeh Lee, Dae Ryook Yang, Jietae Lee, Thomas F. Edgar

Research output: Contribution to journalArticlepeer-review

Abstract

The first-order plus time delay (FOPTD) model-based method is a standard approach to tune proportional-integral (PI) controllers in plants. The FOPTD model can be obtained easily from step responses. However, because of their structural limitations, FOPTD models suffer from difficulties in approximating step responses for some processes including processes with overshoot, resulting in PI controllers with unacceptable performance. To remove these drawbacks, models combining two FOPTD models that can be obtained easily from step responses are proposed to tune PI controllers. Several simulations and experimental examples are given, illustrating the improved performance of the proposed method.

Original languageEnglish
Pages (from-to)10328-10335
Number of pages8
JournalIndustrial and Engineering Chemistry Research
Volume55
Issue number39
DOIs
Publication statusPublished - 2016 Oct 5

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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