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Un nuevo enfoque a la auto-sinton´ıa de controladores PID

Caparroz, Malena ; Soltesz, Kristian LU orcid ; Hägglund, Tore LU ; Guzmán, José Luis and Bernguel, Manuel (2025)
Abstract
This work presents a new approach to the autotuning strategy for controlling pH in raceway reactors, based on classical relay-based autotuning principles. A relay applied to reference method is proposed that allows seamless integration into existing control loops without the need for manual recalibration across seasons or operator intervention. Two different models were identified: first-order with time delay and integrator with time delay, and a classification algorithm was introduced to evaluate disturbances in solar radiation, improving the reliability of autotuning in the presence of clouds. The control scheme consists of a Proportional-Integral (PI) controller with antiwindup and static feedforward compensator to counteract the... (More)
This work presents a new approach to the autotuning strategy for controlling pH in raceway reactors, based on classical relay-based autotuning principles. A relay applied to reference method is proposed that allows seamless integration into existing control loops without the need for manual recalibration across seasons or operator intervention. Two different models were identified: first-order with time delay and integrator with time delay, and a classification algorithm was introduced to evaluate disturbances in solar radiation, improving the reliability of autotuning in the presence of clouds. The control scheme consists of a Proportional-Integral (PI) controller with antiwindup and static feedforward compensator to counteract the radiation effect, with all its parameters automatically adjusted. It has been shown by simulation that the adaptive algorithm allows an improvement in pH regulation compared to a fixed-parameter scheme. Furthermore, the implementation in the real system proves that it can be easily transferred to a real reactor without the need for changes in the algorithm parameters.
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Please use this url to cite or link to this publication:
author
; ; ; and
organization
alternative title
A new approach to autotuning PID controllers
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
in press
subject
host publication
Jornadas de Automática
project
PID Control
language
Spanish
LU publication?
yes
id
df1a0658-8121-43d9-882f-7b78f70ea641
date added to LUP
2025-06-19 21:24:07
date last changed
2025-07-08 09:35:09
@inproceedings{df1a0658-8121-43d9-882f-7b78f70ea641,
  abstract     = {{This work presents a new approach to the autotuning strategy for controlling pH in raceway reactors, based on classical relay-based autotuning principles. A relay applied to reference method is proposed that allows seamless integration into existing control loops without the need for manual recalibration across seasons or operator intervention. Two different models were identified: first-order with time delay and integrator with time delay, and a classification algorithm was introduced to evaluate disturbances in solar radiation, improving the reliability of autotuning in the presence of clouds. The control scheme consists of a Proportional-Integral (PI) controller with antiwindup and static feedforward compensator to counteract the radiation effect, with all its parameters automatically adjusted. It has been shown by simulation that the adaptive algorithm allows an improvement in pH regulation compared to a fixed-parameter scheme. Furthermore, the implementation in the real system proves that it can be easily transferred to a real reactor without the need for changes in the algorithm parameters.<br/>}},
  author       = {{Caparroz, Malena and Soltesz, Kristian and Hägglund, Tore and Guzmán, José Luis and Bernguel, Manuel}},
  booktitle    = {{Jornadas de Automática}},
  language     = {{spa}},
  title        = {{Un nuevo enfoque a la auto-sinton´ıa de controladores PID}},
  url          = {{https://lup.lub.lu.se/search/files/221721432/B-JJAA_2025_Caparroz_Final.pdf}},
  year         = {{2025}},
}