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Multivariable control of nighttime temperature and humidity in greenhouses combining heating and dehumidification

García-Mañas, Francisco ; Hägglund, Tore LU ; Guzman, Josè Luis ; Rodríguez, Francisco and Berenguel, Manuel (2023) 22nd IFAC World Congress In IFAC-PapersOnLine 56(2). p.9900-9905
Abstract
This work presents a multivariable control strategy to regulate nighttime temperature and relative humidity inside a greenhouse, using a pipe heating system and a dehumidification system. The greenhouse is modeled as a two-input two-output (TITO) process with a system identification methodology to calculate low-order linear models. Proportional-integral (PI) controllers with anti-windup are used, and an inverted decoupling scheme is adopted. The strategy was tested in simulation with real data. Results suggest that it is attractive for real implementation and show for the first time that the use of dehumidification systems can be applied as part of a combined control strategy.
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Agriculture, process control, TITO system, PID control, multivariable control,decoupling, system identification
in
IFAC-PapersOnLine
volume
56
issue
2
pages
9900 - 9905
publisher
IFAC Secretariat
conference name
22nd IFAC World Congress
conference location
Yokohama, Japan
conference dates
2023-07-09 - 2023-07-14
external identifiers
  • scopus:85183674346
ISSN
2405-8963
DOI
10.1016/j.ifacol.2023.10.668
project
PID Control
Decentralized Control Structures
language
English
LU publication?
yes
id
d8b574be-a0af-4ad0-9953-98c0ff68fa61
date added to LUP
2023-12-07 11:42:03
date last changed
2024-02-15 14:19:10
@article{d8b574be-a0af-4ad0-9953-98c0ff68fa61,
  abstract     = {{This work presents a multivariable control strategy to regulate nighttime temperature and relative humidity inside a greenhouse, using a pipe heating system and a dehumidification system. The greenhouse is modeled as a two-input two-output (TITO) process with a system identification methodology to calculate low-order linear models. Proportional-integral (PI) controllers with anti-windup are used, and an inverted decoupling scheme is adopted. The strategy was tested in simulation with real data. Results suggest that it is attractive for real implementation and show for the first time that the use of dehumidification systems can be applied as part of a combined control strategy.}},
  author       = {{García-Mañas, Francisco and Hägglund, Tore and Guzman, Josè Luis and Rodríguez, Francisco and Berenguel, Manuel}},
  issn         = {{2405-8963}},
  keywords     = {{Agriculture, process control, TITO system, PID control, multivariable control,decoupling, system identification}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{9900--9905}},
  publisher    = {{IFAC Secretariat}},
  series       = {{IFAC-PapersOnLine}},
  title        = {{Multivariable control of nighttime temperature and humidity in greenhouses combining heating and dehumidification}},
  url          = {{http://dx.doi.org/10.1016/j.ifacol.2023.10.668}},
  doi          = {{10.1016/j.ifacol.2023.10.668}},
  volume       = {{56}},
  year         = {{2023}},
}