Servo Motors Generalized
Science has developed tremendously in recent years and given out many devices and machines to simplify our regular life
. Servo motors are one of the inventions that have helped scientists develop many other devices and increase the abilities of existing machineries. This revolutionary development has widened the scope of advanced unexpectedly.
Now, what is a servo motor? These are small devices that can move to a specific angle, typically between 0 to 180 degrees. A servo motor system usually comprised of many parts namely a servo motor, control circuit, shaft, potentiometer, amplifier, drive gears (depending on the type of servomotor) and either an encoder or a resolver.
Basically there are three types of servo motors used in modern servo systems. They are as follows:
AC servo motors, based on induction motor designs
DC servo motors, based on direct current motor designs
Brushless servo motors, based on synchronous motor designs
Applications:
Servo motors has varieties of uses. They are widely used in machines, robots and general robotic applications, such as radio-controlled toy-cars, robotic arms, air-planes and helicopters, industrial machinery and in many other areas. Due to its extensive abilities its applications are expected to grow.
Advantages:
There are a lot many reasons that make servo motors a sought after device. Few of them are listed below:
Ease of control
Low energy requirements
High efficiency
High torque
TTL voltage level control
Relatively small in size
Light weighted
Servo motors are efficient because of the following abilities they bear:
Ability to operate at a range of speeds without overheating
Ability to operate at zero speed whilst still maintaining enough torque to hold a load in position
Ability to operate at a very low speed for prolong periods that too without overheating
Servo motors are largely used in many robotics applications. In fact, their invention was made targeting mainly robotic needs. They fit into almost every small robotic device, because of the following reasons:
They are made small in size
They have a large angular force or torque in comparison to their size
They operate in a closed loop, that makes them very accurate
They have an internal control circuit
They are electrically efficient because they consume current that is proportional to the weight of the load they hold.
Servo motors are extremely useful and coming up as a revolutionary device to enhance the abilities and features of electrical machines and appliances.
by: Harrie Dadhwal
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