An Auto-Tuning PI Control System for an Open-Circuit Low-Speed Wind Tunnel Designed for Greenhouse Technology
Wind tunnels are a key experimental tool for the analysis of airflow parameters in many fields of application. Despite their great potential impact on agricultural research, few contributions have dealt with the development of automatic control systems for wind tunnels in the field of greenhouse tec...
| Main Authors: | , , , , |
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| Format: | info:eu-repo/semantics/article |
| Language: | English |
| Published: |
MDPI
2020
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| Subjects: | |
| Online Access: | http://hdl.handle.net/10835/7387 |
| _version_ | 1789406646367158272 |
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| author | Espinoza Ramos, Karlos Valera Martínez, Diego Luis Torres Arriaza, José Antonio López Martínez, Alejandro Molina Aiz, Francisco Domingo |
| author_facet | Espinoza Ramos, Karlos Valera Martínez, Diego Luis Torres Arriaza, José Antonio López Martínez, Alejandro Molina Aiz, Francisco Domingo |
| author_sort | Espinoza Ramos, Karlos |
| collection | DSpace |
| description | Wind tunnels are a key experimental tool for the analysis of airflow parameters in many fields of application. Despite their great potential impact on agricultural research, few contributions have dealt with the development of automatic control systems for wind tunnels in the field of greenhouse technology. The objective of this paper is to present an automatic control system that provides precision and speed of measurement, as well as efficient data processing in low-speed wind tunnel experiments for greenhouse engineering applications. The system is based on an algorithm that identifies the system model and calculates the optimum PI controller. The validation of the system was performed on a cellulose evaporative cooling pad and on insect-proof screens to assess its response to perturbations. The control system provided an accuracy of <0.06 m·s‾1 for airflow speed and <0.50 Pa for pressure drop, thus permitting the reproducibility and standardization of the tests. The proposed control system also incorporates a fully-integrated software unit that manages the tests in terms of airflow speed and pressure drop set points. |
| format | info:eu-repo/semantics/article |
| id | oai:repositorio.ual.es:10835-7387 |
| institution | Universidad de Cuenca |
| language | English |
| publishDate | 2020 |
| publisher | MDPI |
| record_format | dspace |
| spelling | oai:repositorio.ual.es:10835-73872023-04-12T19:32:26Z An Auto-Tuning PI Control System for an Open-Circuit Low-Speed Wind Tunnel Designed for Greenhouse Technology Espinoza Ramos, Karlos Valera Martínez, Diego Luis Torres Arriaza, José Antonio López Martínez, Alejandro Molina Aiz, Francisco Domingo low-speed wind tunnel auto-tuning PI controller greenhouse agriculture technology Wind tunnels are a key experimental tool for the analysis of airflow parameters in many fields of application. Despite their great potential impact on agricultural research, few contributions have dealt with the development of automatic control systems for wind tunnels in the field of greenhouse technology. The objective of this paper is to present an automatic control system that provides precision and speed of measurement, as well as efficient data processing in low-speed wind tunnel experiments for greenhouse engineering applications. The system is based on an algorithm that identifies the system model and calculates the optimum PI controller. The validation of the system was performed on a cellulose evaporative cooling pad and on insect-proof screens to assess its response to perturbations. The control system provided an accuracy of <0.06 m·s‾1 for airflow speed and <0.50 Pa for pressure drop, thus permitting the reproducibility and standardization of the tests. The proposed control system also incorporates a fully-integrated software unit that manages the tests in terms of airflow speed and pressure drop set points. 2020-01-16T11:38:50Z 2020-01-16T11:38:50Z 2015-08-12 info:eu-repo/semantics/article 1424-8220 http://hdl.handle.net/10835/7387 en Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess MDPI |
| spellingShingle | low-speed wind tunnel auto-tuning PI controller greenhouse agriculture technology Espinoza Ramos, Karlos Valera Martínez, Diego Luis Torres Arriaza, José Antonio López Martínez, Alejandro Molina Aiz, Francisco Domingo An Auto-Tuning PI Control System for an Open-Circuit Low-Speed Wind Tunnel Designed for Greenhouse Technology |
| title | An Auto-Tuning PI Control System for an Open-Circuit Low-Speed Wind Tunnel Designed for Greenhouse Technology |
| title_full | An Auto-Tuning PI Control System for an Open-Circuit Low-Speed Wind Tunnel Designed for Greenhouse Technology |
| title_fullStr | An Auto-Tuning PI Control System for an Open-Circuit Low-Speed Wind Tunnel Designed for Greenhouse Technology |
| title_full_unstemmed | An Auto-Tuning PI Control System for an Open-Circuit Low-Speed Wind Tunnel Designed for Greenhouse Technology |
| title_short | An Auto-Tuning PI Control System for an Open-Circuit Low-Speed Wind Tunnel Designed for Greenhouse Technology |
| title_sort | auto-tuning pi control system for an open-circuit low-speed wind tunnel designed for greenhouse technology |
| topic | low-speed wind tunnel auto-tuning PI controller greenhouse agriculture technology |
| url | http://hdl.handle.net/10835/7387 |
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