Engineering English
Current Loop
Mechatronics & Robotics · Last updated: July 30, 2026 · How this entry was written
Definition: An inner feedback control loop that regulates the motor current (torque) by comparing the actual current to a reference command. It forms the fastest control layer in cascaded motion control systems.
Example in context
“The current loop bandwidth is set to 1 kHz to ensure fast torque response before the outer velocity loop in the servo drive.”
“Servo sürücüdeki dış hız döngüsünden önce hızlı tork tepkisi sağlamak için akım döngüsü bant genişliği 1 kHz olarak ayarlanmıştır.”
Where engineers use it
The current loop is implemented in the servo drive's digital signal processor, using PI controllers and PWM generation. Engineers tune it first when commissioning a motion system to achieve stable torque control and avoid oscillations.
Synonyms: torque loop, inner loop
Antonyms: velocity loop
Practice: can you use “Current Loop” at work?
During robot arm startup, the joint oscillates when holding a load. The engineer must evaluate whether the current loop or velocity loop tuning is causing the instability.
Show a model answer
“Increase the current loop proportional gain to reduce the torque ripple at low speeds.”
“Current Loop” in 21 languages
| English | Current Loop |
|---|---|
| Turkish | Akım Döngüsü |
| French | Boucle de Courant |
| German | Stromregelkreis |
| Spanish | Lazo de Corriente |
| Chinese | 电流环 |
| Arabic | حلقة التيار |
| Portuguese | Malha de Corrente |
| Russian | Контур тока |
| Japanese | 電流ループ |
| Italian | Anello di Corrente |
| Vietnamese | Vòng lặp dòng điện |
| Hindi | धारा लूप |
| Thai | ลูปกระแส |
| Indonesian | Lingkar Arus |
| Korean | 전류 루프 |
| Bengali | কারেন্ট লুপ |
| Dutch | Stroomlus |
| Swedish | Strömslinga |
| Finnish | Virtasilmukka |
| Ukrainian | Контур струму |
Frequently asked questions
What does Current Loop mean in engineering?
An inner feedback control loop that regulates the motor current (torque) by comparing the actual current to a reference command. It forms the fastest control layer in cascaded motion control systems. In Mechatronics & Robotics, the term carries a usage-frequency rating of 10/10 in the Engineering English library.
How do you pronounce Current Loop?
Current Loop is pronounced /ˈkʌrənt luːp/ (IPA). The Engineering English app plays audio for the term and checks your pronunciation with speech recognition.
How is Current Loop used in a sentence?
Example from an engineering context: “The current loop bandwidth is set to 1 kHz to ensure fast torque response before the outer velocity loop in the servo drive.”
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