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应用EMD能量值的导轨摩擦特征提取方法

任瑶 李国富 应小刚

任瑶, 李国富, 应小刚. 应用EMD能量值的导轨摩擦特征提取方法[J]. 机械科学与技术, 2016, 35(4): 601-605. doi: 10.13433/j.cnki.1003-8728.2016.0419
引用本文: 任瑶, 李国富, 应小刚. 应用EMD能量值的导轨摩擦特征提取方法[J]. 机械科学与技术, 2016, 35(4): 601-605. doi: 10.13433/j.cnki.1003-8728.2016.0419
Ren Yao, Li Guofu, Ying Xiaogang. A Method for Extracting Friction Characteristic of Rail with EMD Energy Value[J]. Mechanical Science and Technology for Aerospace Engineering, 2016, 35(4): 601-605. doi: 10.13433/j.cnki.1003-8728.2016.0419
Citation: Ren Yao, Li Guofu, Ying Xiaogang. A Method for Extracting Friction Characteristic of Rail with EMD Energy Value[J]. Mechanical Science and Technology for Aerospace Engineering, 2016, 35(4): 601-605. doi: 10.13433/j.cnki.1003-8728.2016.0419

应用EMD能量值的导轨摩擦特征提取方法

doi: 10.13433/j.cnki.1003-8728.2016.0419
基金项目: 

浙江省自然科学基金项目(LY12E09001)、宁波市自然科学基金项目(2015A610150)、宁波市重点学科项目(XKl15D223)及浙江省教育厅项目(Y20112100)

详细信息
    作者简介:

    任瑶(1990-),硕士,研究方向为信号分析、机电测控,rynbu90@163.com

    通讯作者:

    李国富(联系人),教授,博士,liguofu@nbu.edu.cn

A Method for Extracting Friction Characteristic of Rail with EMD Energy Value

  • 摘要: 针对机床类设备加速度传感器安装不便的实际情况,以机床电机负荷电流为分析对象,提出了应用经验模态分解(empirical mode decomposition,EMD)和本征模态函数(intrinsic mode function,IMF)能量值的摩擦特征提取方法,间接分析摩擦振动和摩擦磨损状态特性。设计对比实验获取4组传动链电流信号,利用EMD分解电流信号获得系列IMF,计算各阶IMF分量单位时间内能量值,提取摩擦振动对应的边频带和摩擦特征值E(IMF3)。实验表明,通过摩擦特征值E(IMF3)变化曲线可以观察出导轨磨损状态经历的4个时期,实现在线监测导轨磨损状态的目的。
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出版历程
  • 收稿日期:  2015-08-20
  • 刊出日期:  2016-04-05

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