V2EX control loop

Control Loop

Definition / 定义

control loop:控制回路;控制环路。指在控制系统中,通过“测量输出 → 与目标比较 → 计算控制量 → 调整输入 → 再次测量”的循环过程,使系统输出保持稳定或跟随设定值(常见于自动化、电子、机械与软件控制)。在工程语境中也常称为反馈回路的一种实现形式。

Pronunciation / 发音

/kntrol lup/

Examples / 例句

The heater uses a control loop to keep the room at 22°C.
加热器使用控制回路把房间温度维持在 22°C。

In a well-tuned control loop, small disturbances are corrected quickly without causing oscillation.
在调校良好的控制回路中,微小扰动会被迅速修正,同时不会引发系统振荡。

Etymology / 词源

control 源自中古法语 contrerolle(“对照用的副本/登记册”),引申为“核对、监管”,再发展为“控制”。loop 来自古英语 hlēap(与“跳跃、环形回转”的意象相关),表示“环、圈”。合在一起的 control loop 直观表达“控制过程以循环方式反复运行”,尤其强调系统的持续监测与调整。

Related Words / 相关词

Literary Works / 文学作品

  • Feedback Control of Dynamic Systems(Gene F. Franklin, J. David Powell, Abbas Emami-Naeini):控制工程经典教材,系统讲解控制回路与反馈结构。
  • Process Dynamics and Control(Dale E. Seborg 等):过程控制领域权威著作,频繁使用“control loop”讨论工业回路整定与稳定性。
  • Computer-Controlled Systems(Karl J. strm, Bjrn Wittenmark):讨论数字控制与软件实现的控制回路(采样、离散化与实时性等)。
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