Diseño e implementación de un sistema SCADA con control proporcional – integral – derivativo para caudal mediante un servidor, PLC y software en el Laboratorio de Automatización - Facultad de Mecánica.

Abstract

The design and implementation of a Proportional, Integral and Derivative control module of a flow system for the Automation Laboratory and perform control practices (P, PI, PD and PID) was performed. For the implementation of the didactic module we use the following components, a water pump as a power source, two water reservoirs, a flow meter, ultrasonic sensor, PLC S7-1200, a frequency converter that helps regulate the speed of the pump, a globe valve that allows to simulate flow rate interruptions and a USB 6009 DAQ for data collection through a program made in LabVIEW. Each one of the controllers and indicators that make up the PID control module was programmed with the TIA PORTAL V13 software, as well as a SCADA system for the control and monitoring of the plant using an HMI and LabVIEW software with the help of an OPC server. Later, the data acquisition of the flow system was carried out, then the information was taken to the MATLAB Software that determined the transfer function of the plant obtaining the identified model, using the simulation and tuning tools of the PID Tuner/Matlab we found the gains of the controller, using the Simulink/Matlab tools was designed, analyzed and compared the P, PI, PD and PID controllers: performing different presentation graphs to observe the characteristics of each of the controllers, we enter the gains obtained to the program made in LabVIEW fulfilling the expectations of simulation in relation to Proportional-Integral-Derivative (PID) control, whose objective is to deliver an always answer according to what you need. It was recommended that the PID gains should be entered based on the desired results, that is, placed the values, verify the results obtained and modify them to improve the curves.