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The Benefits of Soft Sensor and Multi-Rate Control for the Implementation of Wireless Networked Control Systems

Recent advances in wireless networking technology and the proliferation of industrial wireless sensors have led to an increasing interest in using wireless networks for closed loop control. The main advantages of Wireless Networked Control Systems (WNCSs) are the reconfigurability, easy commissionin...

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Autores principales: Mansano, Raul K., Godoy, Eduardo P., Porto, Arthur J. V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4299119/
https://www.ncbi.nlm.nih.gov/pubmed/25529208
http://dx.doi.org/10.3390/s141224441
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author Mansano, Raul K.
Godoy, Eduardo P.
Porto, Arthur J. V.
author_facet Mansano, Raul K.
Godoy, Eduardo P.
Porto, Arthur J. V.
author_sort Mansano, Raul K.
collection PubMed
description Recent advances in wireless networking technology and the proliferation of industrial wireless sensors have led to an increasing interest in using wireless networks for closed loop control. The main advantages of Wireless Networked Control Systems (WNCSs) are the reconfigurability, easy commissioning and the possibility of installation in places where cabling is impossible. Despite these advantages, there are two main problems which must be considered for practical implementations of WNCSs. One problem is the sampling period constraint of industrial wireless sensors. This problem is related to the energy cost of the wireless transmission, since the power supply is limited, which precludes the use of these sensors in several closed-loop controls. The other technological concern in WNCS is the energy efficiency of the devices. As the sensors are powered by batteries, the lowest possible consumption is required to extend battery lifetime. As a result, there is a compromise between the sensor sampling period, the sensor battery lifetime and the required control performance for the WNCS. This paper develops a model-based soft sensor to overcome these problems and enable practical implementations of WNCSs. The goal of the soft sensor is generating virtual data allowing an actuation on the process faster than the maximum sampling period available for the wireless sensor. Experimental results have shown the soft sensor is a solution to the sampling period constraint problem of wireless sensors in control applications, enabling the application of industrial wireless sensors in WNCSs. Additionally, our results demonstrated the soft sensor potential for implementing energy efficient WNCS through the battery saving of industrial wireless sensors.
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spelling pubmed-42991192015-01-26 The Benefits of Soft Sensor and Multi-Rate Control for the Implementation of Wireless Networked Control Systems Mansano, Raul K. Godoy, Eduardo P. Porto, Arthur J. V. Sensors (Basel) Article Recent advances in wireless networking technology and the proliferation of industrial wireless sensors have led to an increasing interest in using wireless networks for closed loop control. The main advantages of Wireless Networked Control Systems (WNCSs) are the reconfigurability, easy commissioning and the possibility of installation in places where cabling is impossible. Despite these advantages, there are two main problems which must be considered for practical implementations of WNCSs. One problem is the sampling period constraint of industrial wireless sensors. This problem is related to the energy cost of the wireless transmission, since the power supply is limited, which precludes the use of these sensors in several closed-loop controls. The other technological concern in WNCS is the energy efficiency of the devices. As the sensors are powered by batteries, the lowest possible consumption is required to extend battery lifetime. As a result, there is a compromise between the sensor sampling period, the sensor battery lifetime and the required control performance for the WNCS. This paper develops a model-based soft sensor to overcome these problems and enable practical implementations of WNCSs. The goal of the soft sensor is generating virtual data allowing an actuation on the process faster than the maximum sampling period available for the wireless sensor. Experimental results have shown the soft sensor is a solution to the sampling period constraint problem of wireless sensors in control applications, enabling the application of industrial wireless sensors in WNCSs. Additionally, our results demonstrated the soft sensor potential for implementing energy efficient WNCS through the battery saving of industrial wireless sensors. MDPI 2014-12-18 /pmc/articles/PMC4299119/ /pubmed/25529208 http://dx.doi.org/10.3390/s141224441 Text en © 2014 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mansano, Raul K.
Godoy, Eduardo P.
Porto, Arthur J. V.
The Benefits of Soft Sensor and Multi-Rate Control for the Implementation of Wireless Networked Control Systems
title The Benefits of Soft Sensor and Multi-Rate Control for the Implementation of Wireless Networked Control Systems
title_full The Benefits of Soft Sensor and Multi-Rate Control for the Implementation of Wireless Networked Control Systems
title_fullStr The Benefits of Soft Sensor and Multi-Rate Control for the Implementation of Wireless Networked Control Systems
title_full_unstemmed The Benefits of Soft Sensor and Multi-Rate Control for the Implementation of Wireless Networked Control Systems
title_short The Benefits of Soft Sensor and Multi-Rate Control for the Implementation of Wireless Networked Control Systems
title_sort benefits of soft sensor and multi-rate control for the implementation of wireless networked control systems
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4299119/
https://www.ncbi.nlm.nih.gov/pubmed/25529208
http://dx.doi.org/10.3390/s141224441
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