MY SIMULATOR · research-gradeRotor Run-Up Lab

speed0 rpm1× amp0 µmlag0°

idle

max 4700 rpm

ramp 300 rpm/s

Orbit of the disc centre (µm). Dashed circle = eccentricity e of the mass centre. The 1× vector is demodulated once per revolution.

Probe X (blue) and Y (violet), last 60 ms (µm).

Show data

analytic overlay probe Y

Show data

1× vector at probe X (µm). Below the critical speed it points along +Re, at the peak it passes -Im (90° lag), above it ends on -Re (180°).

Frequency vs speed: the 1× line (unbalance) crosses the natural frequencies at the critical speeds (no gyroscopic splitting in v1).

Trial weight 100 g·mm

Balance speed 3000 rpm

ISO grade G

Rotor mass

reveal the hidden unbalance U₀

Sensor noise σ 1.0 µm

Residual unbalance after one trial-weight balancing, N = 200 runs, same seed gives the same histogram.

Tornado: change of the natural frequency when each parameter moves by −10 % / +10 %.

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Rotor Run-Up Lab

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The physics and all graphs still work: use Run-up, the Bode, Polar and Campbell tabs and the balancing wizard.