Interfacing
DC Motor control using PWM module.
Description: The main purpose of DC interfacing 8051
microcontroller is for controlling the speed of the motor. The DC motor is an
electrical machine with a rotating part termed as a rotator which has to be
controlled.
When
interfacing 8051 with DC motor requires a motor driver. There are various types
of drivers ICs among which L293D is typically used for interfacing DC motor
with 8051.L293 is an IC with 16 pins which are represented .
The practical
application of L293D IC is (L293D acts as an interface device) DC motor
interfacing with 8051 microcontroller by which we can control the speed and
direction of the motor. Practical application in which speed and direction of DC
motor can be controlled by interfacing with 8051 microcontroller.
There are
many ways to control speed of motors but very simple and easy way is to use
Pulse Width Modulation.
Pulse
width modulation is an effective method for adjusting the amount of power
delivered to an electrical load.
Power loss
being the product of voltage and current is thus in both cases close to zero. PWM
also works well with digital controls which because of their on/off nature can
easily set the needed duty cycle.
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