Application of PWM for controlling the speed of DC motor

Career Episode 1
Competency
Demonstration Report

CE 1.1 Project Information
Name of the project : Application of PWM for controlling the
speed of DC motor
Location of the project : [PLEASE FILL]
Project Duration : [PLEASE FILL]
Organization : [PLEASE FILL]
Role and Designation during the time : Team Member
CE 1.2 Project Background
CE 1.2.1 Characteristics of the project
In the field of Mechanical Engineering and industrial applications, the DC motor has
founds its use in a significant high rate due to its easy controllability, precise output, and load
characteristics. Controllers developed for the controlling the speed of the Dc motor is essential
for the automation system and the robotic motion of various appliances. I have observed that in
various heavy mechanical devices and automation system, speed control and determining the
constant speed of the DC motor. In this project, I have focused on developing an appropriate
application for controlling the speed of the DC motor for providing precise speed of the DC
motor. Therefore, I have proposed a control system based on Pulse Width Modulation with the
application of various electronic components including sensors, and integrated circuits. I have
used AT89S52 microcontroller for generating the pulse width modulation.
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CE 1.2.2 Objectives developed for the project
In this project, I have utilised the technique of PWM (Pulse Width Modulation) for
controlling the accurate speed of the DC motor. The significant aim of the project is to
implement the speed control with the application of microcontroller, L293D Ic, and infrared
sensors for appropriately determining the speed of the DC motor. For the implementation of the
proposed system, I have focused in determining the appropriate process and technique for
implementation for the DC motor speed control. Therefore, for the completion of the project, I
have developed the following objectives:
 To develop the hardware implementation for the speed controller of the DC motor;
 To implement the appropriate design for counting the speed of the motor with the
application of the sensors;
 To employ the technique of PWM for controlling the speed of the DC motor;
 To evaluate the working principle for speed controller of the DC motor;
 To test and verify the performance and operation of the DC speed controller
developed in this project;
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