control system that converts a small mechanical motion into one requiring much greater power; may include a negative feedback system
"The robotic arm relies on a precision servo to amplify the engineer's gentle hand movements into powerful actions capable of lifting heavy debris."
A servomechanism or servomotor.
"We ran out of gas just outside the city limits and had to pull into the nearest servo to fill up before continuing our road trip."
A service station, being a place to buy petrol for cars etc., as well as various convenience items, with or without actual car service facilities.
To control by means of a servocontrol
"The robot arm moved with surgical precision because its engineer had fine-tuned the servo to adjust its speed based on real-time feedback from the sensors."
of or involving servomechanisms
"The engineer adjusted the servo controls to ensure the robotic arm moved with perfect precision during the assembly test."