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A comparison of two feedforward control structure assessment methods

Petersson, Mikael; Årzén, Karl-Erik LU and Hägglund, Tore LU (2003) In International Journal of Adaptive Control and Signal Processing 17(7--9). p.609-624
Abstract
The most common loop in an industrial plant is a SISO-loop with a PI(D)controller. If the loop is affected by disturbances,these can be handled by adding a feedforward control action. In an industrial control system there are many measured signals, apart from those of the loop, available. The question we address in this article is how to select the feedforward variable out of the available measurements. A comparison is made of two methods for feedforward control structure assessment. The first is a method based on comparing the actual variance with the minimum achievable variance,and thus the contribution to the overall variance. The second is a method for evaluating deterministic additive disturbances and estimate where they enter in the... (More)
The most common loop in an industrial plant is a SISO-loop with a PI(D)controller. If the loop is affected by disturbances,these can be handled by adding a feedforward control action. In an industrial control system there are many measured signals, apart from those of the loop, available. The question we address in this article is how to select the feedforward variable out of the available measurements. A comparison is made of two methods for feedforward control structure assessment. The first is a method based on comparing the actual variance with the minimum achievable variance,and thus the contribution to the overall variance. The second is a method for evaluating deterministic additive disturbances and estimate where they enter in the process. The methods complement each other and show that assessmentmethods should be handled with care, since they are mostly designed fordifferent control objectives. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
International Journal of Adaptive Control and Signal Processing
volume
17
issue
7--9
pages
609 - 624
publisher
John Wiley & Sons
external identifiers
  • wos:000185485100006
  • scopus:0141526363
ISSN
0890-6327
DOI
10.1002/acs.768
language
English
LU publication?
yes
id
4cabccc7-fc0e-41ae-94da-5b50110c92f4 (old id 161690)
date added to LUP
2007-07-10 08:52:16
date last changed
2018-05-29 11:21:29
@article{4cabccc7-fc0e-41ae-94da-5b50110c92f4,
  abstract     = {The most common loop in an industrial plant is a SISO-loop with a PI(D)controller. If the loop is affected by disturbances,these can be handled by adding a feedforward control action. In an industrial control system there are many measured signals, apart from those of the loop, available. The question we address in this article is how to select the feedforward variable out of the available measurements. A comparison is made of two methods for feedforward control structure assessment. The first is a method based on comparing the actual variance with the minimum achievable variance,and thus the contribution to the overall variance. The second is a method for evaluating deterministic additive disturbances and estimate where they enter in the process. The methods complement each other and show that assessmentmethods should be handled with care, since they are mostly designed fordifferent control objectives.},
  author       = {Petersson, Mikael and Årzén, Karl-Erik and Hägglund, Tore},
  issn         = {0890-6327},
  language     = {eng},
  number       = {7--9},
  pages        = {609--624},
  publisher    = {John Wiley & Sons},
  series       = {International Journal of Adaptive Control and Signal Processing},
  title        = {A comparison of two feedforward control structure assessment methods},
  url          = {http://dx.doi.org/10.1002/acs.768},
  volume       = {17},
  year         = {2003},
}