Position control of a DC servo motor using various controllers: A comparative study

In contrast to Direct Current (DC) motors, the angular position of a DC servo motor (DSM) can be regulated at a specific angle using a control signal. Due to its high power rating and speed, DSM is frequently preferred. The aim of the study is to compare the time domain characteristics of system response using proportional (P), proportional-integral (PI), proportional-integral-derivative (PID) controller, state -feedback controller (SFC), and SFC with Integral Action (SFCIA). The DSM is a 3rd order system, and the study differentiates different types of controllers for position control of the DSM in MATLAB. The P, PI, and PID controllers are designed by the Ziegler and Nichols (ZN) method. The SFC is designed by determining the state feedback gain matrix using Ackermann's formula. However, the SFCIA is designed by placing the poles and adding an integrator to the DSM. According to the simulation results, SFCIA has the best performance in terms of peak overshoot (M-p) and settling time (t(s)) as compared to other controllers (P, PI, PID, and SFC). The proposed method could be applied to the higher-order systems also. Copyright (c) 2022 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the International Conference on Artificial Intelligence & Energy Systems.