Transient Response Improvement of Speed Control of Permanent Magnet DC Motor using Finite-Time Control Approach

Abstract

The widespread use of Permanent Magnet Direct Current Motors (PMDCM) in various applications has attracted attention to controlling their speed. Traditional methods like PID and Fuzzy logic have limitations in settling time, overshoot, and speed error, especially with rapid speed changes. This study explores Finite-Time Control (FTC) parameters and their impact on convergence time, overshoot, and speed error. By adjusting one parameter at a time while keeping others constant, optimal values are determined for better control system performance. An FTC is then designed for the current loop based on these optimal parameters, followed by stability analysis. Through thorough analysis, the best values for all FTC parameters are found. The proposed method is tested using MATLAB/Simulink and compared to PID and Fuzzy logic controllers. The novelty can be concluded in the motor responses when the subjected to various types of input signals. Hence, the FTC shows the superior achievement when compared to the other traditional control methods. Most of previous studied delt with FTC in controlling DC motors but they did not study the impact of FTC parameters on the implementation of the finite-time controller that has been done in this research that makes this study unique in this direction.