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A Unified Discussion on Signal Filtering in PID Control

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Author

Summary, in English

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.

Publishing year

2013

Language

English

Pages

994-1006

Publication/Series

Control Engineering Practice

Volume

21

Issue

8

Document type

Journal article

Publisher

Elsevier

Topic

  • Control Engineering

Keywords

  • PID control
  • Feedforward
  • Filtering
  • Lead-lag filter
  • Decoupling
  • Controller structures

Status

Published

Project

  • PID Control
  • LCCC
  • PICLU
  • Decentralized Control Structures

Research group

  • LCCC

ISBN/ISSN/Other

  • ISSN: 0967-0661