Do I need to install anything?

No. It runs in any modern browser, free, with no account required.

For Researchers · Feedback Loop

Feedback Loop for a robot arm

Built for researchers prototyping or validating an idea. Prototype fast, reproduce exactly, and share a citable, interactive version of your model. Simulate a robot arm live below — adjust the inputs and watch it respond, right in your browser.

Feedback LoopLive

why feedback beats open-loop

Controls

Presets

Loop gain G

Plant drift (%)

Disturbance (%)

Feedback measures the output, compares it to the target, and corrects the difference. High loop gain shrinks both tracking error and the effect of disturbances by a factor of 1+G — which is why feedback control is everywhere, from thermostats to cruise control. Educational tool.

▶ Run in Python

Data Inspector

Closed-loop gain0.980

Error reduction51×

Disturbance rejected98%

Governing equation

T = \frac{G}{1 + G H} = \frac{50}{1 + 50 \cdot 1} = 0.980

Reading this result: Moderate gain divides both tracking error and disturbance by 1+G = 51×, cutting the 30% open-loop error down to 0.6%.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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Also for:Students Educators Engineers Hobbyists & Makers K-12 Students First Responders General version →

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Frequently asked questions

Is this good for researchers?: Yes — this version of "Feedback Loop for a robot arm" is framed for researchers prototyping or validating an idea. Prototype fast, reproduce exactly, and share a citable, interactive version of your model.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.