PPolySim OS

Lead–Lag Compensator

Sometimes a controller needs a nudge of phase in just the right place. Place a zero and a pole and watch a lead or lag compensator do the shaping.

Lead–Lag CompensatorLive

Controls

Presets

A lead compensator (pole above zero) adds phase near the crossover to boost stability margins and speed; a lag compensator (pole below zero) trades phase to raise low-frequency gain and kill steady-state error. Educational tool.

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Data Inspector

Typelead
Max phase shift55°
At frequency3.16 rad/s

Governing equation

Reading this result: Pole above zero makes this a lead network: it injects up to 55° of phase near 3.2 rad/s, widening the stability margin and speeding the response right where the loop crosses over.

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How it works

A lead compensator (pole above zero) injects phase near the crossover to improve stability margins and transient speed; a lag compensator (pole below zero) boosts low-frequency gain to cut steady-state error. Both are staples of classical control design. Educational tool.

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Frequently asked questions

Is this lead lag compensator tool really free?▾
Yes. Lead–Lag Compensator runs entirely in your browser using your device's own compute, so local use is free forever. You only pay Compute Tokens if you scale a job to the cloud.
Do I need to install anything?▾
No. Everything runs client-side in a modern browser — no downloads, no license, no account required to start.
Can I save or share my simulation?▾
Create a free account to save projects, and use a shareable embed or minted DOI to publish a live, interactive version anywhere.
How accurate are the results?▾
The solver uses established numerical methods, but results are for research and educational purposes and should be validated against experiment or professional review before you rely on them.