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Design of decoupled PI controller for two-by-two systems

Författare:
Publiceringsår: 2002
Språk: Engelska
Sidor: 74-81
Publikation/Tidskrift/Serie: IEE Proceedings - Control Theory & Applications
Volym: 149
Nummer: 1
Dokumenttyp: Artikel
Förlag: IET

Sammanfattning

The design of PI controllers for systems with interacting loops is discussed. It is advantageous to deal with the interaction at the loop level, because supervisory control seldom has sufficient bandwidth. A new scheme based on modified scalar PI design and static decoupling is developed, in which the frequency characteristic of the coupling between the lower-level loops is taken into account. This leads to a design method emphasising the trade-off between the individual loop performances and the interaction indices introduced in the paper. The controller is easily implemented, due to its simple configuration based on standard components. A useful observation is that the interaction can be reduced substantially by using set-point weighting. The method is applied to three examples, including a model of a new laboratory system called the quadruple-tank process

Disputation

Nyckelord

  • Technology and Engineering

Övriga

Published
Yes
  • ISSN: 1350-2379

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