Electric servomechanisms are powered by a specialized electronic amplifier called a servo drive, which improves performance in terms of desired velocity, torque, position/angle, stiffness, and damping.
A servo drive's primary function is to continuously monitor feedback and adjust for behaviour that deviates from expectations (closed loop system).
Consequently, a servo drive is merely one element of a larger system known as a servo system (servomechanism).
The four primary parts of a servo system are a motion controller, a servo drive, a servo motor, and a feedback device, sometimes known as an encoder.
The Servo Motor in a servo system is powered by the servo drive.
One of the most crucial factors in deciding how well the servo system performs is the servo drive.