Modernización e implementación de control multivariable en matlab para una estación didáctica de reacciones acido-base

Abstract

CONDITION FOR PUBLICATION OF PROJECT. The purpose of this project is to modernize a pH and temperature teaching station, with the goal of updating its operation using current industrial technologies and strengthening the students' hands-on learning in an experimental environment. The hypothesis posits the feasibility of establishing a reliable platform through the integration of sensors, actuators, and a control system in MATLAB. The justification is based on the fact that the original station had limitations and obsolete components that diminished its pedagogical value; therefore, its modernization ensures a current and relevant resource for academic training in control and instrumentation. The development integrated pH and temperature sensors (0–10 V), peristaltic pumps (4–20 mA), 12 V motors, and a Peltier cell controlled by the XY-160D. The LabJack U3-HV was used as an interface with MATLAB, and the wiring was executed in accordance with the IEC 60446 standard. Additionally, voltage-to-current converters, a potentiometer, a relay, and chemical solutions prepared by acid-base titration were incorporated. Testing demonstrated that the control system maintained stability primarily by regulating the base pump, while the introduction of the 10% acid pump generated controlled variations in pH. The agitators and the submersible pump remained operational, ensuring mixture homogeneity. In conclusion, the teaching station has been successfully modernized, establishing it as an up-to-date, versatile, and highly valuable tool for teaching process automation and control. Keywords: Control, didactic station, acid, base