Fault Diagnosis of Rotor Bearing System Based on Stator Current

Rotor bearing system as the power of fully mechanized mining equipment. Fault will affect the whole operation of system, in order to study the relationship between current and fult. Simulation modeling using MATLAB/Simulink software, analog when the failure happen on the rotor bearing system and observe the change of the stator current signal in the event of misalignment, imbalance,bearing raceway wear.Research shows that,the electromechanical coupling model can find the characteristics of rotor bearing systemunder the excitation of the stator current in the fault, through the different excitation frequency to identify failure of rotor bearing system.The model provides a new theoretical basis for fault diagnosis and improvement of the rotor systemdynamics.