Research on vibration synchronization of single-mass nonlinear system under sharp resonance condition;

Based on predigest model for vibration synchronization driven by four motors,the equations of classical vibration were detailedly discussed,and self-synchronization and stability condition were set up in theory.

When synchronous vibration occurs during blade rotation,vibration information acquired will decrease so greatly that it will bring much trouble to vibration analysis.

The relative phase angles of the busses voltage reflect the change of relative power angles, so whether the system is in synchronous oscillation condition or in asynchronous oscillation condition can be identified and predictive system separation control can be applied,by the change speed and sign of relative phase angles.