本文關(guān)鍵詞：基于KPCA和WPHM的滾動軸承可靠性評估與壽命預(yù)測　出處：《振動.測試與診斷》2017年03期 　論文類型：期刊論文

  更多相關(guān)文章： 滾動軸承 壽命預(yù)測 核主元分析 威布爾比例故障率模型 相對特征

【摘要】：為了評估滾動軸承的可靠性和預(yù)測剩余使用壽命,選取能夠反映性能退化過程的特征參數(shù)作為壽命預(yù)測模型的輸入?yún)?shù),提出一種基于核主元分析(kernel principal component analysis,簡稱KPCA)和威布爾比例故障率模型(Weibull proportional hazards model,簡稱WPHM)的方法。首先,提取滾動軸承全壽命周期的時域、頻域及時頻域等多特征參數(shù),從中篩選出有效的特征參數(shù),構(gòu)建高維相對特征集;其次,進行核主元分析,選取能夠反映軸承全壽命周期性能退化過程的核主元,進而作為WPHM的協(xié)變量來進行可靠性評估和剩余壽命預(yù)測。通過滾動軸承全壽命試驗,驗證了該方法能夠?qū)S承進行準確的可靠性評估和剩余壽命預(yù)測,以提供及時的維修決策。同時,由于提取的是相對特征,降低了同種軸承間在制造、安裝及工況的差異,增強了該方法的適用性和穩(wěn)定性。
[Abstract]:In order to evaluate the reliability and prediction of rolling bearing residual service life, selection of characteristic parameters can reflect the performance degradation process of life prediction as input parameters of the model, put forward a kind of based on kernel principal component analysis (kernel principal component analysis, referred to as KPCA) and Weibull proportional hazards model (Weibull proportional hazards model, referred to as WPHM) method. First, multi feature extraction of rolling bearing life cycle time-domain and frequency domain, selected the effective feature parameters in construction of high dimensional relative feature set; secondly, to select the kernel principal component analysis, kernel principal component can reflect the degradation process of bearing life cycle performance, and as a covariate WPHM to evaluate the reliability and residual life prediction. Through the life cycle test of rolling bearing, it is verified that the method can accurately evaluate the bearing and predict the remaining life, so as to provide timely maintenance decisions. At the same time, due to the relative characteristics, the difference between the manufacturing, installation and working conditions of the same kind of bearing is reduced, and the applicability and stability of the method are enhanced.
【作者單位】： 大連理工大學(xué)機械工程學(xué)院;
【基金】：國家自然科學(xué)基金資助項目(51375067) 航空科學(xué)基金資助項目(20132163010)
【分類號】：TH133.33
【正文快照】： 引言滾動軸承是旋轉(zhuǎn)機械的關(guān)鍵組成部件之一,其性能的好壞直接影響整臺機器能否正常運轉(zhuǎn)。在滾動軸承發(fā)生損毀之前,對軸承進行主動維修保養(yǎng)可以有效避免惡性事故的發(fā)生,最大程度地減少生命財產(chǎn)損失[1]。有效的維修策略不僅可以減少停機次數(shù)和降低維修成本,而且可以保障整個設(shè)，

本文編號：1346373