Desenvolvimento de uma bancada didática para controle de motores CC utilizando MATLAB/Simulink em tempo real

Abstract

This work proposes the development of a didactic workbench for control systems study with low cost. Initial goal is to control the speed of a Direct Current Motor (DC) using the PID and Fuzzy Logic control technique. It will use a data acquisition system based on a dsPIC microcontroller family, which will be responsible for activating the motor DC power driver, perform the reading of the encoder to determine the motor speed and send this data into digital values to be handled the computer using the MATLAB/Simulink software. Data exchange between microcontroller and MATLAB/Simulink will be performed by RS-232 serial communication. In MATLAB/Simulink occur closing the loop and implementation of PID and Fuzzy control through hardware-in-the-loop technique. A generator with multiple loads coupled to the motor and controlled via software simulate disturbances in the system. The MATLAB/Simulink facilitates change of control technique without having to reprogram the microcontroller and makes it possible to implement various control techniques such as classical, modern and unconventional, in addition to a supervisory system to preview the system response and change control parameters in real-time, which makes this interesting application for teaching control techniques.