Diseño e implementación de un sistema de control de temperatura y nivel de agua en la planta de llenado de tanques del laboratorio de automatización industrial utilizando un algoritmo PID.

Abstract

This project which was done in the laboratory of industrial automation of the Universidad Politécnica Salesiana have the main idea of developing a new learning tool for future students, it will complement an existing plant and resemble it to a real industrial process. To do that, we set up an ultrasonic sensor which will measure in real time the level in one of the tanks, a 1000w resistor that is feed which 120v, this one will do the heat transfer and obtain the required temperature, a temperature sensor, the PT100, and finally a HMI Comfort TP700 to realize the SCADA. The Labview platform was used to perform input and output data acquisition, as well as the Simulink platform to generate input signals and record the response of both systems, the TIA Portal V13 platform was also used to program the controllers through the PLC. These three platforms could work in synchrony through the use of OPC servers. The mathematical models of the level and temperature processes of the system were identified thanks to the IDENT function of the Matlab program. For the automatic control of both processes a PID control was carried out whose parameters were calculated through the Ziegler & Nichols method.