Aplicação de métodos numéricos para o aumento da eficiência energética do controlador de temperatura de uma estufa

Abstract

This work presents some types of controllers used to control the temperature of a greenhouse prototype. The prototype was made available by the Pneumatics and Supervisory Laboratory of the IFPE Campus Garanhuns, so that it was possible to compare the performance of the controllers, from the perspective of energy efficiency and mechanical stress of the actuators that participate in the temperature variation of the greenhouse. Two actuators were used, the halogen lamp for heating and a fan for heat dissipation. A controller is applied whose operation is based on numerical methods, so that it is able to track the ideal power of the lamp in order to maintain the temperature at the desired level. To collect temperature data, a sensor sends the data to a microcontroller, then regulating the voltage through an electronic module (Dimmer). This component regulates the power of the lamp, thus allowing to maintain the desired temperature in the stove using a minimum of energy. This system, in addition to presenting a shorter response time, both in stationary and permanent regimes, can adapt to scenarios where there are external disturbances