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Control of unstable non-minimum-phase delayed systems

Garcia, Pedro ; Albertos, Pedro and Hägglund, Tore LU (2006) In Journal of Process Control 16(10). p.1099-1111
Abstract
The control of systems with long delays, by considering the option of stable/unstable and minimum/non-minimum-phase processes, is a challenging one. Most of the existing solutions do not cover all the situations and, in any case, they lead to complex controllers. Simple controllers, easy to design and tune, are very important in the process industry. In this paper, some control schemes based on a new but very simple Smith Predictor are presented, the tuning of the controllers being done on a delay-free model. Internal stability and robust stability analysis for these control structures is provided. Several illustrative examples taken from previous works are included to demonstrate the simplicity and superiority of the proposed method over... (More)
The control of systems with long delays, by considering the option of stable/unstable and minimum/non-minimum-phase processes, is a challenging one. Most of the existing solutions do not cover all the situations and, in any case, they lead to complex controllers. Simple controllers, easy to design and tune, are very important in the process industry. In this paper, some control schemes based on a new but very simple Smith Predictor are presented, the tuning of the controllers being done on a delay-free model. Internal stability and robust stability analysis for these control structures is provided. Several illustrative examples taken from previous works are included to demonstrate the simplicity and superiority of the proposed method over those already published both for robust stability and to reject load disturbance. (C) 2006 Elsevier Ltd. All rights reserved. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
load disturbance, systems, non-minimum-phase, unstable time-delay systems, Smith Predictor, robust stability, digital implementation
in
Journal of Process Control
volume
16
issue
10
pages
1099 - 1111
publisher
Elsevier
external identifiers
  • wos:000242648900008
  • scopus:33750333989
ISSN
1873-2771
DOI
10.1016/j.jprocont.2006.06.007
language
English
LU publication?
yes
id
4843a2d7-d9d3-472a-add6-a089dd5453c5 (old id 685125)
date added to LUP
2016-04-01 12:19:29
date last changed
2020-09-09 02:17:06
@article{4843a2d7-d9d3-472a-add6-a089dd5453c5,
  abstract     = {The control of systems with long delays, by considering the option of stable/unstable and minimum/non-minimum-phase processes, is a challenging one. Most of the existing solutions do not cover all the situations and, in any case, they lead to complex controllers. Simple controllers, easy to design and tune, are very important in the process industry. In this paper, some control schemes based on a new but very simple Smith Predictor are presented, the tuning of the controllers being done on a delay-free model. Internal stability and robust stability analysis for these control structures is provided. Several illustrative examples taken from previous works are included to demonstrate the simplicity and superiority of the proposed method over those already published both for robust stability and to reject load disturbance. (C) 2006 Elsevier Ltd. All rights reserved.},
  author       = {Garcia, Pedro and Albertos, Pedro and Hägglund, Tore},
  issn         = {1873-2771},
  language     = {eng},
  number       = {10},
  pages        = {1099--1111},
  publisher    = {Elsevier},
  series       = {Journal of Process Control},
  title        = {Control of unstable non-minimum-phase delayed systems},
  url          = {http://dx.doi.org/10.1016/j.jprocont.2006.06.007},
  doi          = {10.1016/j.jprocont.2006.06.007},
  volume       = {16},
  year         = {2006},
}