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PROJECT DESCRIPTION

This project is designed to control the speed of a DC motor using PWM control with the 8051 series microcontroller. The speed of the DC motor is directly proportional to the voltage applied across its terminals. Hence, if the voltage across the motor terminal is varied, then the speed can also be varied.

This project uses the above principle to control the speed of the DC motor by varying the duty cycle of the pulse applied to it (popularly known as PWM control). This project uses two input buttons interfaced to the microcontroller, which are used to control the speed of motor. PWM (Pulse Width Modulation) is generated at the output by the microcontroller as per the program. The Program can be written in Assembly language or in Embedded C.

The average voltage given or the average current flowing through the motor changes depending on the duty cycle (ON and OFF time of the pulses); therefore, the speed of the motor changes. A motor driver IC is interfaced to the microcontroller for receiving PWM signals and delivering desired output for the speed control of small DC motor.

Furthermore, this project can be enhanced by using power electronic devices such as IGBTs to achieve the speed control of higher capacity industrial motors.

 

 

 

 

PROJECT HIGHLIGHTS
Easy to use, Self-explanatory kit.
All-inclusive solution kit.
Extensive audio-visuals available.
Branding-free material.
Pre-programmed Microcontroller.
Call/mail for Tech Support from 10 am - 7 pm.
Can be Customized for Arduino, Raspberry Pi, PIC
BLOCK DIAGRAM
PWM based Speed Control for DC Motor
Hardware Requirements
  • 8051 series Microcontroller
  • Crystal
  • DC Motor
  • Motor Driver IC
  • LED
  • Resistors
  • Capacitors
  • Diodes
  • Transformer
  • Voltage Regulator
  • Push Buttons
Software Requirements
  • Keil compiler
  • Language: Embedded C or Assembly
Q & A
Q:  Which microcontroller is used in this project?
A:  The microcontroller used in this project is a 40 pin IC from 8051 family.
Q:  What is the RPM of DC motor?
A:  45RPM is the speed of DC motor.
Q:  How is the speed control achieved?
A:  Speed control can be achieved by using push buttons provided on the PCB.
Q:  What is the technique behind this project?
A:  PWM technique is the technique behind this project.
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