On-line optimization and control of the buffer sizes in a cellular network communication system

Author(s):  
Michael M. Markou ◽  
Christos G. Panayiotou
Author(s):  
Jorge Hernández Camacho ◽  
Laura E. Muñoz Hernández ◽  
Juan Carlos Acosta Guadarrama ◽  
Virgilio López Morales

In order to have an optimal production in a Green-house, it is necessary to regulate the artificial micro-environment. By controlling the main physical variables (temperature, humidity, irrigation cycles, etc.) as well as the variables involved in the rates of plants growing (nutrients, sun radiation, water, etc.), the plant’s production quality, the energy and water consumption can be optimized. For instance, temperature and humidity can be regulated by opening or drawing the ventilation system or domes or by heating or circulating the air inside the greenhouse. These tasks should be constantly supervised by a supervised distributed communication system. In this paper, we propose a distributed serial communication system based on microcontrollers to monitoring and supervising the process via Internet, in order to achieve the on-line supervision and control of the greenhouse operation and environmental conditions as well as the main variables (temperature, humidity, irrigation cycles, etc.).


1993 ◽  
Vol 3 (1) ◽  
pp. 3-15 ◽  
Author(s):  
Garry A. Labossiere ◽  
Peter L. Lee

2012 ◽  
Vol 29 ◽  
pp. S163 ◽  
Author(s):  
Juris Vanags ◽  
Vytautas Galvanauskas ◽  
Oskars Grigs ◽  
Konstantins Dubencovs ◽  
Valerija Stepanova

1995 ◽  
Vol 117 (2) ◽  
pp. 161-164
Author(s):  
G. Kloeppner ◽  
R. Scholz ◽  
R. Jeschar

Measures reducing the NO formation by qualified firing (primary measures) are intensively investigated. Fundamental elements in this context are the staging of fuel and combustion air as well as the recirculation of exhaust gas, to control residence time and also temperature and concentration patterns. For prediction, but also for optimization and control of technical combustion processes, simplified models of NO formation are applicable and required. These models should be simplified in a way that allows on-line operation and is capable of reflecting sufficiently the process. The structure of such a model (kinetics, reactors) is described in the present paper. Introducing two model parameters (a characteristic process temperature and a fuel-NO parameter), the model has proved effective in predicting NO formation during combustion of natural gas and also visbreaker residue.


2012 ◽  
Vol 482-484 ◽  
pp. 2485-2488
Author(s):  
Yan Zhang

In this paper, a novel network optimization-based MPC scheme is proposed for on-line optimization and control of a class of distributed control systems, in which the on-line optimization of the whole system is decomposed into that of several small-scale sub-systems in distributed structures. Under network environment, the connectivity of the communication network is assumed to be sufficient for each sub-system to exchange information with other sub-systems. An iterative algorithm for networked MPC with ideal information model is developed for DCS. Finally, the simulation study of the fuel feed flow control for the walking beam reheating furnace is provided to test the effectiveness and practicality of the proposed networked MPC algorithm.


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