Feature analysis of rolling bearing fault signal based on electrostatic monitoring in wear site
Aiming at the problem of coupling multi-component excitation interference of rolling bearing vibration monitoring signals,the electrostatic monitoring technology is introduced to monitor the charge level in the bearing wear site.An experimental platform for electrostatic monitoring of rolling bearing was designed and built,and electrostatic monitoring of rolling bearing was completed through fault simulation experiments at different rotating speeds.Several monitoring signals were analyzed in time-frequency domain and compared with vibration monitoring results.The experimental results show that the characteristic frequencies of corresponding fault locations can be monitored by electrostatic signals at different rotating speeds and matched with theoretical characteristic values.Compared with vibration signals,the interference of electrostatic signals is smaller and the fault characteristic signals are more obvious.The research method and results show that the electrostatic monitoring technology avoids multiple excitation sources and has advantages in monitoring the wear site of rolling bearing.
万方数据
维普
