作者：顾双双¹, 刘若晨¹, 严旭¹, 孙见忠², 贝绍轶¹

作者单位：1. 江苏理工学院汽车与交通工程学院，江苏 常州 213001;
2. 南京航空航天大学民航学院，江苏 南京 211106

关键词：静电监测;滚动轴承;磨损区域;故障特征;信号分析

摘要：

针对滚动轴承振动监测信号耦合多部件激励干扰问题，引入静电监测技术，对轴承磨损区域的荷电水平进行监测研究。设计并搭建滚动轴承静电监测实验平台，通过不同转速下的故障模拟实验，完成滚动轴承静电监测；对多组监测信号进行时频域分析，并与振动监测结果进行比较。实验结果表明，静电信号在各不同转速下均能监测到各对应故障位置的特征频率，且与理论特征值相匹配；实测同组静电信号与振动信号相比，静电信号所含干扰较小，故障特征信号更为明显。研究方法和结果证明静电监测技术可避免多激励源，对滚动轴承磨损区域监测具备优势。

Feature analysis of rolling bearing fault signal based on electrostatic monitoring in wear site
GU Shuangshuang¹, LIU Ruochen¹, YAN Xu¹, SUN Jianzhong², BEI Shaoyi¹
1. School of Automobile and Traffic Engineering, Jiangsu University of Technology, Changzhou 213001, China;
2. College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
Abstract: 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.
Keywords: electrostatic monitoring;rolling bearing;wear site;fault characteristics;signal analysis
2024, 50(5):145-152  收稿日期: 2021-12-23;收到修改稿日期: 2022-04-30
基金项目: 国家自然科学基金（51705221，91860139，52072176）；江苏理工学院研究生实践创新计划项目（XSJCX22_40）
作者简介: 顾双双(1997-),男,江苏丹阳市人,硕士研究生,专业方向为故障诊断、信号处理。
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