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Answer Posted / sornakumar
Servo motors are used in closed loop control systems in
which work is the control variable, The digital servo
motor controller directs operation of the servo motor by
sending velocity command signals to the amplifier, which
drives the servo motor. An integral feedback device
(resolver) or devices (encoder and tachometer) are either
incorporated within the servo motor or are remotely
mounted, often on the load itself
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