DC Motor Speed Control Using Minimum Overshoot PI Controller Design

Abstract

This paper presents a DC motor speed control using minimum overshoot PI controller design. The design method was based on adjusting the PI controller parameters to avoid overshoot in the closedloop system step response for controlling DC motor including minimum phase analysis. The proposed system consists of PI controller, AC to DC converter, separately excited DC motor rated at 1.1 kW, 220 V, 6.5 A, 3000 rpm, optical tachometer and frequencyto voltage converter (F/V). The mathematical model was derived from the designed parameters of PI controller to control DC motor by MATLAB/Simulink program. The experimental results are found that the step response overshoot is below 5% and agree with predicted value.