noun
external disturbance; noise; interference
Technical term used in engineering, control systems, and signal processing for any unwanted external influence that disrupts a system or measurement.
このセンサーは外乱に強い設計になっている。
This sensor is designed to be resistant to external disturbances.
制御系では外乱の影響を最小限に抑えることが重要だ。
In control systems, it is important to minimize the effects of external disturbances.