A servo drive is an electronic device that controls the movement of a servo motor. It receives commands from a controller and adjusts the motor's speed, position, and torque to achieve precise motion. Servo drives are commonly used in applications like robotics, CNC machines, and conveyor systems, where accuracy and responsiveness are crucial. These drives work by processing feedback from the motor, allowing for real-time adjustments. This feedback loop ensures that the motor performs as intended, maintaining the desired performance even under varying loads. Overall, servo drives play a vital role in modern automation and control systems.