Abstract
An agricultural greenhouse is a complex and Multi-Input Multi-Output MIMO system in which the internal parameters create a favorable microclimate for agricultural production. Temperature and internal humidity are two parameters that have a major impact on greenhouse yield. The objective of this study was to propose a simulated dynamic model in a MATLAB/Simulink environment for experimental validation. Moreover, a fuzzy controller was designed to manage a greenhouse indoor climate by means of an asynchronous motor for ventilation, heating, humidification, etc. An intelligent system to control these actuators for an optimal inside climate was implemented in the model. The dynamic model was validated by comparing the simulation results to experimental measurements. These results showed the effectiveness of the control strategy in regulating the greenhouse indoor climate. Finally, a photovoltaic generator was modeled, with the aim of reducing the costs of agricultural production. It feeds the asynchronous motor with a vector control optimized by fuzzy logic that drives a variable speed fan.
Highlights
Due to the enormous increase and instability of oil and derivatives markets, countries are constantly looking for alternative sources of energy to ensure the independence of their economies from fluctuations in oil prices
We present the main contribution of this work, which is represented by the of photovoltaic energy in the agricultural sector and by efficiency in the control of the parameters of coupling of photovoltaic energy in the agricultural sector and by efficiency in the control of the the agricultural greenhouse
Fuzzy controller was developed for the smart agreement between the calculated data and the measured data
Summary
Due to the enormous increase and instability of oil and derivatives markets, countries are constantly looking for alternative sources of energy to ensure the independence of their economies from fluctuations in oil prices. Photovoltaic energy can have undeniable advantages, especially due to its cleanliness and low cost. It can be used in various applications such as in agronomy, where different variables, e.g., temperature and humidity, have to be monitored and controlled. A greenhouse is a known solution for protecting plant cover from diseases and bad weather. A greenhouse is a complex system, the internal climate of which is influenced by many factors, such as wind speed, solar radiation, external temperature, and humidity
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