振动与冲击
振動與遲擊
진동여충격
JOURNAL OF VIBRATION AND SHOCK
2015年
8期
66-70
,共5页
王志阳%杜文辽%陈进
王誌暘%杜文遼%陳進
왕지양%두문료%진진
独立成分分析%约束独立成分分析%盲源分离%机械故障诊断%滚动轴承
獨立成分分析%約束獨立成分分析%盲源分離%機械故障診斷%滾動軸承
독립성분분석%약속독립성분분석%맹원분리%궤계고장진단%곤동축승
independent component analysis (ICA)%constrained independent component analysis (CICA)%blind source separation%machine fault diagnosis%rolling element bearing
由独立成分分析(ICA)的顺序不确定性带来的源数估计和对传感器个数的估计问题使得ICA在机械故障诊断中的广泛应用受到了限制,而约束独立成分分析(CICA)充分利用了设备的先验知识作为ICA的约束条件,可以使ICA算法收敛到感兴趣的故障信号。本文提出了一种基于滚动轴承模型的约束独立成分分析(CICA)方法,该方法可以从传感器信号中快速诊断出设备是否发生了滚动轴承故障,并用仿真和实验验证了该方法在滚动轴承故障诊断中的有效性。
由獨立成分分析(ICA)的順序不確定性帶來的源數估計和對傳感器箇數的估計問題使得ICA在機械故障診斷中的廣汎應用受到瞭限製,而約束獨立成分分析(CICA)充分利用瞭設備的先驗知識作為ICA的約束條件,可以使ICA算法收斂到感興趣的故障信號。本文提齣瞭一種基于滾動軸承模型的約束獨立成分分析(CICA)方法,該方法可以從傳感器信號中快速診斷齣設備是否髮生瞭滾動軸承故障,併用倣真和實驗驗證瞭該方法在滾動軸承故障診斷中的有效性。
유독립성분분석(ICA)적순서불학정성대래적원수고계화대전감기개수적고계문제사득ICA재궤계고장진단중적엄범응용수도료한제,이약속독립성분분석(CICA)충분이용료설비적선험지식작위ICA적약속조건,가이사ICA산법수렴도감흥취적고장신호。본문제출료일충기우곤동축승모형적약속독립성분분석(CICA)방법,해방법가이종전감기신호중쾌속진단출설비시부발생료곤동축승고장,병용방진화실험험증료해방법재곤동축승고장진단중적유효성。
The order ambiguity of independent component analysis (ICA ) makes it very difficult to estimate numbers of sources and sensors.Constrained independent component analysis (CICA)can use some prior knowledge of equipments as a constraint of ICA to make the ICA algorithm converge to fault signals to be interested.Here,a model-based constrained independent component analysis method for fault diagnosis of rolling element bearings was presented.Its effectiveness was verified with simulations and tests.