A Bearing Fault Diagnosis Method Using Deformable Periodic Potential System

doi:10.7652/xjtuxb202008010

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A Bearing Fault Diagnosis Method Using Deformable Periodic Potential System

更新时间：2025-07-09

- A Bearing Fault Diagnosis Method Using Deformable Periodic Potential System
- Vol. 54, Issue 8, Pages: 77-83(2020)
- 作者机构：
  
  重庆邮电大学通信与信息工程学院,重庆,400065
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202008010
  CLC： TH133.33
- Online First：10 August 2020，
  
  Published：2020
- 稿件说明：
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A Bearing Fault Diagnosis Method Using Deformable Periodic Potential System[J]. 2020, 54(8): 77-83.
DOI：

A Bearing Fault Diagnosis Method Using Deformable Periodic Potential System[J]. 2020, 54(8): 77-83. DOI： 10.7652/xjtuxb202008010.

摘要

针对在高强度噪声环境下的轴承故障信号难以检测的问题

提出一种利用形变周期势系统(DPPS)的轴承故障诊断方法。该方法首先将掺杂噪声的故障信号输入DPPS中

组成以DPPS为核心的随机共振(SR)系统; 然后

以功率谱放大倍数(SPA)和幅度响应为测度指标来量化DPPS轴承故障诊断方法对轴承故障特征信号的增强效果

通过矩量法和概率流方法推导SPA和幅度响应的解析式

得到当SPA和幅度响应最大时的DPPS诊断方法的最优设置参数; 最后

在相同条件下

将该诊断方法应用于轴承内外圈故障诊断

并与新型幂指三稳势系统(NCETS)轴承故障诊断方法作对比实验。实验结果表明

DPPS轴承故障诊断方法能够利用噪声的能量分别将内外圈故障特征频率的功率谱幅值提高至1 950和2 950 W/Hz

从而可以在功率谱中轻易识别

进而断定轴承的内外圈出现了故障

而NCETS故障诊断方法仅能分别提高至359.2和575.6 W/Hz

证明了采用DPPS的轴承故障诊断方法的有效性和先进性。

Abstract

A bearing fault diagnosis method using the deformation periodic potential system(DPPS)is proposed to solve the problem that the bearing fault signal is difficult to detect in a high-intensity noise environment. The method first inputs the noise-doped fault signal into the DPPS to form a stochastic resonance(SR)system with DPPS as the core and to detect the bearing fault characteristic frequency from the environmental noise and judge the bearing fault type. Then

the spectral power amplification(SPA)and amplitude response are used as measurement indicators to quantify the enhancement effect of the method on the bearing fault characteristic signal. Analytical formulas of SPA and amplitude response are derived using the method of moments and the probability flow method

and the optimal setting parameters of the DPPS diagnosis method are obtained when SPA and amplitude response are maximum. Finally

the DPPS diagnosis method is applied to the fault diagnosis of bearing inner and outer ring

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references

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