Controle de temperatura do tipo PID aplicado a zona de aquecimento de um forno elétrico resistivo

Abstract

The present work presents the development of a PID control applied to the heating zone of a resistive electric furnace. It is divided in four chapters: theoretical reference, proposed method, project implementation and results obtained. The first chapter presents the theoretical basis of the most relevant subjects for the development of this work, they are: industrial control systems, where are described forms of automatic control; microcontrollers and their operation in a control system; PWM power control (modulation of the power consumed by a load); RS232 serial communication and programming language. The second chapter is the methodology describing the steps and materials required for the development of PID control. The third chapter is the implementation that performs the proposed steps in the methodology, detailing the steps described in the methodology. The fourth chapter is the analysis and interpretation of the results, the description of observed behaviors of the obtained results through the purchase between the control of type ON-OFF and PID. At the end the conclusion is presented based on the results obtained.