SLIDING MODE CONTROL BASED SPEED CONTROL OF DC MOTOR

  The proposed Sliding Mode Control (SMC) technique has been successfully implemented for the speed control of a DC motor, demonstrating strong robustness and reliability. Unlike conventional controllers, which are sensitive to parameter variations and external disturbances, the SMC approach ensures consistent performance by driving the system states onto a predefined sliding surface and maintaining stability throughout operation. The simulation results confirm that the controller achieves fast dynamic response, accurate speed tracking, and minimal steady-state error. The motor operates smoothly under varying load conditions, and the system maintains stability without significant oscillations in speed, torque, or current. These characteristics highlight the effectiveness of SMC in handling nonlinearities and uncertainties present in practical motor drive systems. Overall, the study establishes Sliding Mode Control as a powerful and efficient method for DC motor speed regulation. Its simplicity in design, combined with high robustness and performance, makes it suitable for real-time industrial applications. Future work can focus on hardware implementation and further optimization to enhance performance in practical environments.

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