Design of decoupled PI controller for two-by-two systems
Författare
Summary, in English
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
Avdelning/ar
Publiceringsår
2002
Språk
Engelska
Sidor
74-81
Publikation/Tidskrift/Serie
IEE Proceedings: Control Theory and Applications
Volym
149
Issue
1
Länkar
Dokumenttyp
Artikel i tidskrift
Förlag
Institution of Engineering and Technology
Ämne
- Control Engineering
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1350-2379