Low-cost mini bench with DC motors and encoder for feedback control practice
DOI:
https://doi.org/10.5902/2179460X92211Keywords:
Didactic Bench, Mathematical modeling, Discrete-Time control, DC Motor, Closed-Loop control, Transfer function, Linear control, PID control, Digital PID, Feedback controlAbstract
This paper presents the development and application of a low-cost didactic bench based on DC motors with encoders for practical teaching of control systems in engineering. The proposal aims to overcome resource limitations in educational institutions by providing an accessible, portable, and effective platform for experimentation with fundamental concepts such as circuit analysis, electronics, mathematical modeling, instrumentation, and closed-loop control. The mathematical modeling of the DC motor is detailed, including transfer function derivations, and the design of a digital discrete-time controller for angular velocity control is presented, employing tools such as MATLAB and Simulink for validation. The results demonstrate the technical and pedagogical feasibility of the bench, enabling students to gain an integrated and applied experience, better preparing them for modern engineering challenges.
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