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

Åström, Karl Johan LU ; Johansson, Karl Henrik LU and Wang, Q.G. (2002) In IEE Proceedings - Control Theory and Applications 149(1). p.74-81
Abstract
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... (More)
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 (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
IEE Proceedings - Control Theory and Applications
volume
149
issue
1
pages
74 - 81
publisher
Institution of Engineering and Technology
external identifiers
  • wos:000174940400012
  • scopus:0036230601
ISSN
1350-2379
DOI
10.1049/ip-cta:20020087
language
English
LU publication?
yes
id
83173adf-f81d-4781-92ff-f7f331e67577 (old id 162042)
alternative location
http://ieeexplore.ieee.org/xpls/abs_all.jsp?isnumber=21432&arnumber=993584&count=17&index=11
date added to LUP
2007-07-04 11:36:26
date last changed
2017-11-05 03:40:29
@article{83173adf-f81d-4781-92ff-f7f331e67577,
  abstract     = {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},
  author       = {Åström, Karl Johan and Johansson, Karl Henrik and Wang, Q.G.},
  issn         = {1350-2379},
  language     = {eng},
  number       = {1},
  pages        = {74--81},
  publisher    = {Institution of Engineering and Technology},
  series       = {IEE Proceedings - Control Theory and Applications},
  title        = {Design of decoupled PI controller for two-by-two systems},
  url          = {http://dx.doi.org/10.1049/ip-cta:20020087},
  volume       = {149},
  year         = {2002},
}