振动与冲击
振動與遲擊
진동여충격
JOURNAL OF VIBRATION AND SHOCK
2014年
6期
165-169
,共5页
周雁冰%柳亦兵%王峰%姜锐
週雁冰%柳亦兵%王峰%薑銳
주안빙%류역병%왕봉%강예
点蚀故障%Gabor滤波%非高斯性强度%趋势分析%3σ准则
點蝕故障%Gabor濾波%非高斯性彊度%趨勢分析%3σ準則
점식고장%Gabor려파%비고사성강도%추세분석%3σ준칙
pitting fault%Gabor filtering%non-Gaussian intensity%trend analysis%3σcriterion
以齿轮箱实测振动信号为对象,对齿轮点蚀故障发展过程深入研究。通过Gabor滤波仅保留振动信号的边带成分与随机成分;据双谱分析结果研究信号非线性、非高斯性变化,并提取非高斯性强度特征值;在故障趋势分析中利用“3σ准则”设定故障阈值。结果表明,非高斯性强度特征值对齿轮点蚀故障较敏感,可揭示故障发展变化趋势,有利于齿轮故障报警及寿命预测,对齿轮传动系统状态监测与故障诊断具有实际意义。
以齒輪箱實測振動信號為對象,對齒輪點蝕故障髮展過程深入研究。通過Gabor濾波僅保留振動信號的邊帶成分與隨機成分;據雙譜分析結果研究信號非線性、非高斯性變化,併提取非高斯性彊度特徵值;在故障趨勢分析中利用“3σ準則”設定故障閾值。結果錶明,非高斯性彊度特徵值對齒輪點蝕故障較敏感,可揭示故障髮展變化趨勢,有利于齒輪故障報警及壽命預測,對齒輪傳動繫統狀態鑑測與故障診斷具有實際意義。
이치륜상실측진동신호위대상,대치륜점식고장발전과정심입연구。통과Gabor려파부보류진동신호적변대성분여수궤성분;거쌍보분석결과연구신호비선성、비고사성변화,병제취비고사성강도특정치;재고장추세분석중이용“3σ준칙”설정고장역치。결과표명,비고사성강도특정치대치륜점식고장교민감,가게시고장발전변화추세,유리우치륜고장보경급수명예측,대치륜전동계통상태감측여고장진단구유실제의의。
Gear pitting fault causes change in non-Gaussian components of vibration signals.This change can be quantitatively described by higher order spectral analysis.With measured vibration signals of a gearbox,the development process of gear pitting fault was investigated in depth.By Gabor filtering,the sideband components and the random components of vibration signals were retained.According to the bispectral analysis results,the change of nonlinear non-Gaussian characteristics of vibration signals was studied and the non-Gaussian intensity characteristic values were then extracted.The fault trend analysis was carried out and the fault threshold value was set in accordance with the ’3σcriterion’.The results show that the non-Gaussian intensity characteristic value is sensitive to gear pitting fault,and it can reveal the trend of fault development.It’s conducive to the failure alarm and life prediction of gears,and has practical significance to condition monitoring and fault diagnosis of gear transmission system.