What is the purpose of the servo amplifier in a control system?

The purpose of the servo amplifier in a control system is primarily to amplify input signals, which is essential for controlling motors and actuators effectively. In a typical application, the servo amplifier takes a low-level control signal that represents the desired position or speed of a motor and increases this to a level that can drive the motor itself.

This amplification is crucial because the control signals generated by sensors or controllers are often insufficient to directly drive the higher power requirements of motors used in various applications. By boosting these signals, the servo amplifier ensures that the system can accurately follow the desired commands, providing the necessary energy and control to achieve precise motion or positioning.

Amplification also contributes to the overall performance and responsiveness of the system, enabling quick adjustments to be made according to feedback from sensors. This leads to smoother operation and improved accuracy of the control system.

In contrast, other choices relate to important aspects of servo systems, such as applying signal corrections, stabilizing outputs, and monitoring feedback, but they do not specifically define the primary function of the servo amplifier itself.