滚动轴承性能退化静电监测方法及试验  

Electrostatic Monitoring of Oil Lubricated Rolling Bearing Performance Degradation and Experiment

作　　者：刘若晨[1] 左洪福[1] 张营[1] 梁坤[1] 

机构地区：[1]南京航空航天大学民航学院,南京211106

出　　处：《机械工程学报》2014年第23期75-81,共7页Journal of Mechanical Engineering

基　　金：国家自然科学基金资助项目(60939003)

摘　　要：采用静电方法对滚动轴承进行在线监测以及退化评估的研究。在滚动轴承寿命强化试验机平台上,使用自研磨损区域静电传感器对滚动轴承进行在线监测,通过多组试验采集得到滚动轴承磨损静电信号,在对滚动轴承磨损过程静电产生机理分析的基础上,进行静电信号的特征提取,通过加速疲劳全寿命周期试验进行滚动轴承性能退化评估,并与振动信号与温度信号进行对比验证。研究结果表明,磨损区域静电监测技术可以实现滚动轴承性能退化的在线监测,该研究是机械系统在线监测以及故障诊断和预测的重要组成部分,并为仪器实现产品化奠定了基础。Study of on-line monitoring of oil lubricated rolling bearing and performance degradation with electrostatic sensing method. Electrostatic monitoring is a new method for rolling bearing with self-made wear-site sensor （WSS） on rolling bearing accelerated life testing rig. With the analysis of charge generating process induced by tribological activity, the experiments are carried out to collect the electrostatic signals. Then feature extraction of the electrostatic signals is taken for rolling bearing performance degradation assessment, compared with the vibration signals and the temperature signals. The study result shows that the wear-site electrostatic sensor technology can be used to realize the on-line monitoring of lubricated oil rolling bearing performance degradation, which is an essential part of state monitoring and fault diagnosis for mechanical system and lays a foundation for the commercialization of the instrument.

关 键 词：静电监测 滚动轴承 磨损区域 特征提取 性能退化 

分 类 号：TH133[机械工程—机械制造及自动化]