Synchronizing electric motor rotation angles to cancel destructive acoustic harmonics in passenger cabins.
When multiple electric propellers rotate at slightly differing speeds, acoustic beating creates unbearable low-frequency droning. AAVSync aligns individual motor rotor electrical angles within 0.1 degrees, shifting blade passage frequencies to induce destructive acoustic wave cancellation.
Motor inverters receive synchronized space-vector pulse-width modulation (SVPWM) triggers over the TTEthernet bus, adjusting phase currents at 20 kHz to damp airframe structural resonance modes.