Controle e supervisão de um deslocador pneumático utilizando controladores lógicos programáveis e rede Modbus

Abstract

Industrial pneumatic systems, although used for decades, remain highly relevant in a wide range of industrial applications. This work aimed to implement the control and supervision of a pneumatic plant by establishing communication with a PLC and monitoring through a supervisory system, with the goal of restoring the operation of the plant, which was previously non-functional and unable to fulfill its didactic purpose. The plant, along with its associated industrial devices and software, is located in the Industrial Networks II laboratory of the Control and Automation Engineering program at the Federal University of Uberlândia. At the control level, the WAGO Compact Controller 100 PLC was integrated, responsible for reading the plant’s input and output variables and executing the control logic. Furthermore, system supervision was carried out using the ELIPSE E3 SCADA system via the Modbus RTU communication protocol, enabling data acquisition for system identification using MATLAB. Finally, the PID controller have been tuned based on the resulting model, employing the most suitable method for this type of application.