Radio Controlled Dc Motor
Radio controlled DC motor project is Available in one Angle, two Angle, three Angle.
Radio Controlled Dc Motor 2
angle
INEXPENSIVE d.c. motors are often used by model-makers, not only for model
locomotives and racing cars but in robots of all kinds. They may also be used for
driving non-mobile models . This project controls a small 6V d.c.motor, but can be used
for 12V or higher voltage d.c. motors as well. The circuit controls both the speed and the
direction of the motor. There is a wide range of cheap low-voltage motors available.
Radio Controlled Dc Motor Receiver Block
Diagram
Radio Controlled Dc Motor Transmitter Block
Diagram
, running at maximum no-load speeds ranging from 3600 r.p.m. to 18,000 r.p.m. or
more. Torque may be anything between 3g-cm for the cheaper versions and over 60g-
cm for the slightly more expensive motors. Many applications require slower speeds
with correspondingly greater torque, and there are several different plastic gearboxes
available for the model maker to use. There are also motor-driven devices such as
cooling fans and water pumps that can be controlled
by this project. It is possible to control the speed of a motor by simply wiring a resistor
in series with it. Apart from the inefficiency of such a system, there is the need for a
heavy-duty variable resistor (potentiometer). A typical d.c. motor requires several
hundred milliamps to drive it. If the motor is taking, say, 300mA and the variable
resistor is dropping, say, 3V, the power dissipated in the resistor is 0•9W. The typical
variable potentiometer is rated at only 0•25W, so something much more robust
isrequired, costing three or more times as much.Another factor is that motors do not
run well on less than their full rated voltage. They fail to start turning when current is
switched on and have a tendency to stall when extra load is applied.
We all know that ac motors are normally constant speed motors Vriable speed ac drives
uses very complex circuitory because the ac motor speed is varied by the frequency
variation.and is not quite easy.
Stepper motor gives calculated angle of rotation they take number of steps in one
revolution they canot be stopped inbetween the step. Also they are not constant
running motors their use is limited to the area where you wanted a calculated steps to
be taken such as priners, plotters, and other similar applications.
Dc motors are widely used in industry where wide range of variable speed is required.
Their application area is very wide : textile , petrochemical, medical
electronics,consumer electronics, submarines,aircrafts, military equipments,setallites
vehicles, rockets, trains,trams, non pollution vehicles,cars, robotics and the list is non
ending. In a nut shell where a precission speed control is required, dc motor is required.