Engineering English
Loop Gain
Mechatronics & Robotics · Electronics Engineering · Last updated: July 30, 2026 · How this entry was written
Definition: The product of all gains around a feedback loop, typically the magnitude of the open-loop transfer function evaluated at a given frequency. It determines system stability and the amount of overshoot and settling time.
Example in context
“Ensure the loop gain at the crossover frequency is exactly one to achieve a stable closed-loop response with adequate phase margin.”
“Çevrim kazancının geçiş frekansında tam olarak bir olduğundan emin olun, böylece yeterli faz payı ile kararlı bir kapalı çevrim yanıtı elde edilir.”
Where engineers use it
Used in Bode plot analysis to determine stability margins; engineers adjust controller gains to shape the loop gain for desired phase and gain margins.
Synonyms: open-loop gain, loop transfer function gain
In Electronics Engineering
Loop gain is the product of the forward-path gain and the feedback factor in a closed-loop system. It determines the stability, bandwidth, and accuracy of the feedback amplifier.
“The loop gain of the operational amplifier circuit must be well above unity at the desired closed-loop bandwidth to ensure low distortion.”
Practice: can you use “Loop Gain” at work?
You are tuning a PID controller for a DC motor. The Bode plot shows the loop gain crossing 0 dB at 50 Hz. What do you check to guarantee stability?
Show a model answer
“Check the loop gain at the crossover frequency to ensure sufficient phase margin.”
“Loop Gain” in 21 languages
| English | Loop Gain |
|---|---|
| Turkish | çevrim kazancı |
| French | gain de boucle |
| German | Schleifenverstärkung |
| Spanish | ganancia de lazo |
| Chinese | 环路增益 |
| Arabic | كسب الحلقة |
| Portuguese | ganho de malha |
| Russian | коэффициент усиления петли |
| Japanese | ループゲイン |
| Italian | guadagno d'anello |
| Vietnamese | độ lợi vòng lặp |
| Hindi | लूप लाभ |
| Thai | เกนลูป |
| Indonesian | penguatan loop |
| Korean | 루프 이득 |
| Bengali | লুপ লাভ |
| Dutch | lusversterking |
| Swedish | slingförstärkning |
| Finnish | silmukkavahvistus |
| Ukrainian | коефіцієнт підсилення петлі |
Frequently asked questions
What does Loop Gain mean in engineering?
The product of all gains around a feedback loop, typically the magnitude of the open-loop transfer function evaluated at a given frequency. It determines system stability and the amount of overshoot and settling time. In Mechatronics & Robotics, the term carries a usage-frequency rating of 10/10 in the Engineering English library.
How do you pronounce Loop Gain?
Loop Gain is pronounced /luːp ɡeɪn/ (IPA). The Engineering English app plays audio for the term and checks your pronunciation with speech recognition.
How is Loop Gain used in a sentence?
Example from an engineering context: “Ensure the loop gain at the crossover frequency is exactly one to achieve a stable closed-loop response with adequate phase margin.”
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