Dc Motor and Drive Details3
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Transcript of Dc Motor and Drive Details3
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DC Motor
Geared DC motors can be defined as an extension of DC motor which already had its Insight
details demystifiedhere.A geared DC Motor has a gear assembly attached to the motor. The
speed of motor is counted in terms of rotations of the shaft per minute and is termed as RPM
.The gear assembly helps in increasing the torque and reducing the speed. Using the correct
combination of gears in a gear motor, its speed can be reduced to any desirable figure. This
concept where gears reduce the speed of the vehicle but increase its torque is known as gear
reduction. This Insight will explore all the minor and major details that make the gear head and
hence the working of geared DC motor.
External Structure
At the first sight, the external structure of a DC geared motor looks as a straight expansion over
the simple DC ones.
http://www.engineersgarage.com/insight/how-dc-motor-works?page=1http://www.engineersgarage.com/insight/how-dc-motor-works?page=1http://www.engineersgarage.com/insight/how-dc-motor-works?page=1http://www.engineersgarage.com/insight/how-dc-motor-works?page=1 -
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The lateral view of the motor shows the outer protrudes of the gear head. A nut is placed near
the shaft which helps in mounting the motor to the other parts of the assembly.
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Also, an internally threaded hole is there on the shaft to allow attachments or extensions such
as wheel to be attached to the motor
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IC L 293D MOTOR DRIVER
DESCRIPTION
The Device is a monolithic integrated high voltage, high current four channel driver designed to
accept standard DTL or TTL logic levels and drive inductive loads (such as relays solenoids, DC
and stepping motors) and switching power transistors.
To simplify use as two bridges each pair of channels is equipped with an enable input. A
separate supply input is provided for the logic, allowing operation at a lower voltage and internal
clamp diodes are included. This device is suitable for use in switching application at frequencies
up to 5 kHz. TheL293D is assembled in a 16 lead plastic Package which has 4 center pins
connected together and used for heat sinking The L293DD is assembled in a 20 lead surface
Mount which has 8 center pins connected together and used for heat sinking.
http://www.engineersgarage.com/electronic-components/l293d-motor-driver-ichttp://www.engineersgarage.com/electronic-components/l293d-motor-driver-ichttp://www.engineersgarage.com/electronic-components/l293d-motor-driver-ichttp://www.engineersgarage.com/electronic-components/l293d-motor-driver-ic -
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ADVANTAGES
This is wireless controller robot hence the limitation of wired robots is completely
overcome by using latest technology of mobile phones.
In this project we have used RF circtury hance the limitation of a controlled range is no
more a constrain of this model.
Limitless area coverage is the main advantage of this land rover
DISADVANTAGE
This land rover has only one disadvantage that is it can be operated in area where
mobile network is available and if mobile network is not available it can not be operated.
APPLICATION
This land rover can carry any thing mounted on top it.
This can be fitted in an attractive form of a toy robo.
It can also be used to make mobile bomb by making some modification.
If we use the switching IC instead of the driver ic we can turn on and off any appliances
connected to this robot