Speed control of DC motor by PWM in Proteus simulation

Summary of Speed control of DC motor by PWM in Proteus simulation


This article presents a Proteus simulation project for controlling the speed of a DC motor using Pulse Width Modulation (PWM) generated by an 8051 microcontroller. The project features two push buttons to adjust the PWM duty cycle, thereby varying motor speed. An oscilloscope in the simulation shows the PWM signal changes in real time. Unlike the original demo file using full H-bridge control, this version uses a single transistor for switching. This setup is ideal for beginners learning motor control through microcontrollers and simulation software.

Parts used in the Speed Control of DC Motor by PWM Project:

  • 8051 Microcontroller
  • DC Motor
  • Transistor (for switching)
  • Push Buttons (two for increasing and decreasing PWM duty cycle)
  • Oscilloscope (for viewing PWM signals in simulation)
  • Proteus Simulation Software

Hello friends here is a proteus simulation of speed control of DC motor with the help of Pulse width modulation (PWM) control, PWM signals are generated by 8051 microcontroller.

Speed control of DC motor by PWM in Proteus simulation

As we have discussed earlier that proteus is a really good simulation software for beginners and 8051 is the most basic among all microcontroller so this can be a very good project of motor control if you are doing it for first time.

Originally this simulation was given in demo file of Proteus 8, but full H- bridge control was used there but i have used only one transistor switching to transfer PWM to motor.

Here two push buttons are used to control the duty cycle of PWM signal generated by 8051. You can see the PWM signal changing on oscilloscope when we press the buttons. (You can use these buttons to increase or decrease pulse width.)

Here is the link to download simulation files, C program and debug file for PWM generation by 8051 microcontroller.

If you have any query or suggestions you can always comment below. Speed control of DC motor by PWM in Proteus simulation schematich

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About The Author

Ibrar Ayyub

I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough research and presenting information in a structured and logical format.

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