Servo Motors, What Are They?
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In today's modern world addiction to gadgets seems rife and gadget addicts are getting younger. In the world of consumerism owning of the newest product is a badge of status. One area of technology which is entering consumer products is robotics. Even though industrial robots are still extremely costly consumer robotics are becoming cheaper and therefore the relating components far cheaper. Unfortunately numerous elements of robotics are still costly and folk becoming interested in robotics as a hobby needs to take care and learn as much as possible in order to avoid expensive mistakes. One component often associated with robotics are servos but what are they?
Trying to find information about servo motors online is incredibly difficult and if you find it the language used is all too frequently far too technical and difficult to understand. More often than not the information is relating more to industrial situations. This is commonly the case in the field of motion control and servos.
Servos are important elements in robots but are also found in such items as radio controlled cars and airplanes. Servo motors are small devices which feature a shaft (a rod or pole which is able to be placed at specific angles by using a coded signal. By altering the signal the servo will alter the angular position of the shaft accordingly.
Although Servo motors are relatively small they contain incorporated control circuitry and they are amazingly powerful having enormous torque. This power is controlled by three wires, one for power and the other two for control and earth.
Let's Get Technical
Sadly it is unavoidable and I have to be technical here, but stay with me and you might discover that you comprehend the basic concept.
As well as the control circuit servos feature a a component called a potentiometer which is a variable resistor which is connected to the shaft. The potentiometer assists the control circuit to monitor the current angle of the servo.
Normal servo motors control angular motion up to one hundred and eighty degrees, a small number of servo motors go further however to go further than 210 degrees is virtually impossible and they have a mechanical stop which is built into the main system to prevent this.
Servo Drives
A servo drive is used to power servos. By changing the electric current sent to the servo the drive enables proportional control. Because the amount of power sent to the servo is directly proportional to the amount of distance it travels incredibly accurate movement is possible.
Servo motors are utilised in various industries such as CNC machining, robotics and factory automation. While these servos are often huge they can also be much smaller for use in consumer items and hobbyist robotics systems such as the incredibly popular Lego Mindstorms.
Article Source: Articlelogy.com
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