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Derivative backoff: The other saturation problem for PID controllers

Theorin, Alfred LU and Hägglund, Tore LU (2015) In Journal of Process Control 33. p.155-160
Abstract
tThe PID controller is by far the most common controller, and to ensure good behavior under all circumstances, a PID implementation must consider many practical aspects such as integrator windup,derivative kick, and bumpless parameter and mode changes. In this paper, an entirely new issue for the derivative part is introduced and has been named derivative backoff. It occurs when the process value measurement saturates and is a general issue that affects all PID implementations. Derivative backoff is described in detail and it is shown that it can cause considerable, undesired, effects on industrially relevant processes even when they are controlled by well-tuned PID controllers. An anti-backoff strategy for PID controllers with integral... (More)
tThe PID controller is by far the most common controller, and to ensure good behavior under all circumstances, a PID implementation must consider many practical aspects such as integrator windup,derivative kick, and bumpless parameter and mode changes. In this paper, an entirely new issue for the derivative part is introduced and has been named derivative backoff. It occurs when the process value measurement saturates and is a general issue that affects all PID implementations. Derivative backoff is described in detail and it is shown that it can cause considerable, undesired, effects on industrially relevant processes even when they are controlled by well-tuned PID controllers. An anti-backoff strategy for PID controllers with integral action is proposed and evaluated, and a simple patch for existing PID implementations is presented. Possible strategies for PID controllers without integral action are also discussed. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Control algorithms, Derivative action, PID control, PID controllers, Derivative backoff
in
Journal of Process Control
volume
33
pages
155 - 160
publisher
Elsevier
external identifiers
  • wos:000361934900013
  • scopus:84938062877
ISSN
1873-2771
DOI
10.1016/j.jprocont.2015.06.008
project
LCCC
PICLU
PID
language
English
LU publication?
yes
id
f007fddb-0d7d-434c-b06c-95c5a03d404d (old id 7988924)
date added to LUP
2015-09-23 13:03:08
date last changed
2017-11-19 03:10:45
@article{f007fddb-0d7d-434c-b06c-95c5a03d404d,
  abstract     = {tThe PID controller is by far the most common controller, and to ensure good behavior under all circumstances, a PID implementation must consider many practical aspects such as integrator windup,derivative kick, and bumpless parameter and mode changes. In this paper, an entirely new issue for the derivative part is introduced and has been named derivative backoff. It occurs when the process value measurement saturates and is a general issue that affects all PID implementations. Derivative backoff is described in detail and it is shown that it can cause considerable, undesired, effects on industrially relevant processes even when they are controlled by well-tuned PID controllers. An anti-backoff strategy for PID controllers with integral action is proposed and evaluated, and a simple patch for existing PID implementations is presented. Possible strategies for PID controllers without integral action are also discussed.},
  author       = {Theorin, Alfred and Hägglund, Tore},
  issn         = {1873-2771},
  keyword      = {Control algorithms,Derivative action,PID control,PID controllers,Derivative backoff},
  language     = {eng},
  pages        = {155--160},
  publisher    = {Elsevier},
  series       = {Journal of Process Control},
  title        = {Derivative backoff: The other saturation problem for PID controllers},
  url          = {http://dx.doi.org/10.1016/j.jprocont.2015.06.008},
  volume       = {33},
  year         = {2015},
}