A servo motor is an electrical device which can push or rotate an object with great precision. If you want to rotate and object at some specific angles or distance, then you use servo motor. It is just made up of simple motor which run through servo mechanism.
Field control has some specific advantages over armature control and on the other hand armature control has also some specific advantages over field control. Which type of control should be applied to the DC servo motor , is being decided depending upon its specific applications.
Before understanding the working principle of servo motor we should understand first the basic of servomechanism.
The gear mechanism will take high input speed of the motor (fast) and at the output, we will get an .
The motor is attached by gears to the control wheel. Servo motors are DC motors that allows for precise control of angular position. Modern servomotors use rotary encoders, either absolute or incremental.
Absolute encoders can determine their position at power-on, but are more complicated and expensive. Incremental encoders are simpler, cheaper and work at faster speeds. DC Servo - motor : Unlike large industrial motors, dc servomotors are not used for continuous energy conversion. The basic operating principle is same as other electromagnetic motors. Design, construction and mode of operation are different . The rotors of this kind of motor are designed with long rotor . The encoder has the approximate sensor for telling the rotational speed and revolution per minute of the motor.
The construction of servo motor is shown in figure 2. In this video we will try to know about servomotor working and principle and types of servomotor. We will see that how servomechanism works on the motors. More videos available on this channel.
A basic look at how servos work , and how they are controlled. Thus major types of Servo motor may be - (i) DC Servo motor , (ii) AC Servo . DC motor is controlled using servomechanism, it is called as DC Servo motor. Learn more about Chapter 3: AC and DC Motors - Servomotors: General Principles of Operation on GlobalSpec.
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