Optimal Controllers Design for Position Control of DC Servo Motor Under Disturbance

In this study, various optimized control schemes are designed to control the angular position of the DC servo motor (DCSM) system in the presence of an external torque disturbance. These control schemes include the optimized Proportional-Integral-Derivative (PID) controller, the optimized Synergetic Controller (SC), and the optimized Modified Sliding Mode Controller (MSMC). The optimal gains of these controllers have been determined using Particle Swarm Optimization (PSO). A comparative study has been conducted to assess the performance of the controlled system by using these optimal controllers to control the DCSM’s angular position. To avoid falling into local optimal solutions, a modified version of the PSO technique is used. The numerical simulation results obtained with MATLAB reveal that the performance of the MPSO-based MSMC is superior to that of the PID and SC controllers in minimizing settling time, electric current quality, and fitness evaluation value under an external torque disturbance.