noun
servomechanism
Technical term in engineering and robotics for a feedback control system that uses error-sensing to correct performance.
このロボットアームはサーボ機構で精密に動く。
This robot arm moves precisely using a servomechanism.
サーボモーター is the motor component, while サーボ機構 refers to the entire feedback control system.
Compound of サーボ (from English 'servo', short for 'servomechanism') and 機構 (mechanism).