基于摩擦信号的滑动轴承接触摩擦故障的状态监测

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (3) : 68-72.

论文

张峻宁　张培林　陈彦龙　张云强

作者信息 +

The condition monitoring of contacting fault of plain bearings based on friction signal

ZHANG Jun-ning　ZHANG Pei-lin　CHEN Yan-long　YANG Wang-can

Author information +

文章历史 +

摘要

摩擦信号与固有振动信号混叠造成滑动轴承的接触摩擦故障诊断困难。针对此特点，本文在不分离摩擦信号的条件下提出了一种基于摩擦信号强度的接触摩擦故障监测方法。该方法首先结合EMD和非线性峭度确定摩擦信号发生的时刻，然后改进灰色B型绝对关联度以计算摩擦信号对相邻固有振动信号的冲击强度，以此衡量摩擦信号的相对大小，进而监测滑动轴承接触摩擦故障。仿真和试验证明了该方法的有效性，为监测滑动轴承故障提供了一种新思路。

Abstract

Contact friction fault diagnosis is diffcult in plain bearing caused by friction signals mixed with natural vibration signals. A plain bearing contact friction fault diagnosis method is proposed based on signal strength calculation but don’t need to separate the friction signals, in which EMD and Nonlinear Kurtosis is used to search time of friction signal. Then the impact strength of friction signals on natural vibration signals were calculated by improved Absolute Grey Relational Degree of B-mode. Finally, the calculation results were used to estimate the size of the friction signal and to diagnose contacting fault of plain bearing. The proposed method was applied to simulate signals and actual signals, the analysis results demonstrated the effectiveness of the proposed method and offer us a new ideas to diagnosis the plain bearing fault.

导出引用

张峻宁　张培林　陈彦龙　张云强. 基于摩擦信号的滑动轴承接触摩擦故障的状态监测[J]. 振动与冲击, 2016, 35(3): 68-72

ZHANG Jun-ning　ZHANG Pei-lin　CHEN Yan-long　YANG Wang-can. The condition monitoring of contacting fault of plain bearings based on friction signal[J]. Journal of Vibration and Shock, 2016, 35(3): 68-72

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