Vibration Research of Rub-impact Between Rotor and Stator in Rotating Machine

The characteristic of rotor and stator vibration signals under run-impact status is studied.Firstly,the characteristic and rules of rotor and stator vibration signals under rub-impact status are studied.Rotor and stator vibration feature with different rotor speed is analyzed through experiment.Through the analysis of stator vibration characteristic,the pulse force from rub-impact may lead to stator resonance,so it can be brought out to diagnose rubimpact faults.Results reveal that the stator resonance signals can indicate rub-impact faults.The conclusions can give basis for the vibration character of the stator and the detection of rub-impact signals for the rotor system.