A Unified Discussion on Signal Filtering in PID Control

Research output: Contribution to journalArticle

Abstract

The major input signals entering the PID controller are: the setpoint, the process output, and measurable load disturbances. By feeding these signals through suitable filters, the properties of the feedback loop can be improved significantly. The goal of this paper is to provide a unified discussion about these filters. The paper treats set-point handling, feedforward from load disturbances, TITO (two input two output) control, noise filtering, and process dynamics compensation. An industrial case from the steel industry is also presented.

Details

Authors
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Control Engineering

Keywords

  • PID control, Feedforward, Filtering, Lead-lag filter, Decoupling, Controller structures
Original languageEnglish
Pages (from-to)994-1006
JournalControl Engineering Practice
Volume21
Issue number8
Publication statusPublished - 2013
Publication categoryResearch
Peer-reviewedYes

Bibliographic note

project = TITO

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Related activities

Hägglund, T. (Keynote/plenary speaker)
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Activity: Talk or presentationInvited talk

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