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Speed Control of DC Motor under Varying Load Using PID Controller
Muhammad Rafay Khan, Aleem Ahmed Khan, Umer Ghazali
Pages - 38 - 48     |    Revised - 31-07-2015     |    Published - 31-08-2015
Volume - 9   Issue - 3    |    Publication Date - August 2015  Table of Contents
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KEYWORDS
Speed Control, DC Motor Model, PID Control, Closed Loop, Load Disturbance.
ABSTRACT
DC motors are used extensively in industrial variable speed applications because of most demanding speed-torque characteristics and are simple in controlling aspects. This paper presents a DC motor speed controlling technique under varying load condition. The linear system model of separately excited DC motor with Torque-variation is designed using PID controller. A Matlab simulation of proposed system with no-Load and full-load condition is performed on Simulink platform to observe the system response. The motor speed is kept constant in this experiment. The simulation result of the experiment shows that a motor is running approximately at a constant speed regardless of a motor load. The Simulink results show that the speed of the motor is slow down only for about 270 rpm (9%) in 980 milliseconds under the effect of full load. However, the motor speed is hunting about 200 rpm (6.66%) in 900 milliseconds on unloading condition. It is concluded that a PID controller is successful tool for controlling the motor speed in presence of load disturbances.
CITED BY (1)  
1 Kumar, U., & Dohare, D. (2015). Separately Excited DC Motor Speed control of using various Tuning Conventional Controllers.
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Mr. Muhammad Rafay Khan
Electronic Engineering Department Sir Syed University of Engineering & Technology Karachi, 75300, Pakistan - Pakistan
engr.muhammad.rafay@gmail.com
Mr. Aleem Ahmed Khan
Electronic Engineering Department Sir Syed University of Engineering & Technology Karachi, 75300, Pakistan - Pakistan
Mr. Umer Ghazali
Electronic Engineering Department Sir Syed University of Engineering & Technology Karachi, 75300, Pakistan - Pakistan


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