Multi-Stage Noninteracting PID Control by Precompensators with Series-Parallel Connection

HeeHyol Lee, Masamune Nagamachi, Won Kyu Choi, Jeong Young Song, Michio Miyazaki, Kageo Akizukir

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In multivariable control systems, controlled variables interact each other in general. In this case one compensation for a control loop exerts harmful influence upon other control loop through the interaction. If we could take away this interaction by some ways for a complete one to one corresponds between the manipulated variable and the controlled variable, then the design of control systems results in the individual compensation of the single loop control. A cross controller was used for removing the interaction thus far mainly, but it was complicated and the controller was high-order. On the other hand, the precompensator by the Inverse Nyquist Array method was also used for noninteraction of the controlled variables. However it is difficult to remove the interaction of the controlled system, which has very strong interaction, when the precompensator is used only one. This paper proposes the series and/or parallel connection of the precompensators for a multi-stage noninteracting PID control, and the multi-stage precompensators are applied to the control of the fluid temperature and liquid level interacting plant to confirm the effectiveness.

Original languageEnglish
Pages (from-to)43-49
Number of pages7
JournalIEEJ Transactions on Electronics, Information and Systems
Volume123
Issue number1
DOIs
Publication statusPublished - 2003
Externally publishedYes

Fingerprint

Three term control systems
Multivariable control systems
Controllers
Control systems
Fluids
Liquids
Temperature
Compensation and Redress

Keywords

  • Inverse Nyquist Array
  • multi-stage noninteracting
  • PID control
  • precompensators
  • series-parallel connection

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Multi-Stage Noninteracting PID Control by Precompensators with Series-Parallel Connection. / Lee, HeeHyol; Nagamachi, Masamune; Choi, Won Kyu; Song, Jeong Young; Miyazaki, Michio; Akizukir, Kageo.

In: IEEJ Transactions on Electronics, Information and Systems, Vol. 123, No. 1, 2003, p. 43-49.

Research output: Contribution to journalArticle

Lee, HeeHyol ; Nagamachi, Masamune ; Choi, Won Kyu ; Song, Jeong Young ; Miyazaki, Michio ; Akizukir, Kageo. / Multi-Stage Noninteracting PID Control by Precompensators with Series-Parallel Connection. In: IEEJ Transactions on Electronics, Information and Systems. 2003 ; Vol. 123, No. 1. pp. 43-49.
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