Degradation and acceleration modeling for ball bearings based on kurtosis of vibration data

摘要：

　　Bearing has gradually become a critical rotational component in many mechanical systems, and its health condition will directly affect the whole systems working life.Therefore,it is essential to accurately predict bearings life through collection and process of performance degradation data.Accelerated degradation testing (ADT) proves to be an effective way.By systematically raising stress levels during operation, information about degradation can be gathered and life under normal condition could be extrapolated based on certain accelerated models.This article mainly discusses the establishment of performance degradation model for ball bearings based on kurtosis index extracted from the vibration data for 2012 PHM data challenge.Then an accelerated model that describes the relationship between degradation model parameters and two common kinds of stress, rotational speed and radial load, can be obtained based on fixed effect linear model.Finally, reliability analysis is implemented based on Wiener process.Our research achievements may provide sufficient support on data and model for bearings lifetime prediction.

关键词： feature extraction kurtosis accelerated model reliability analysis Wiener process

作者: Xiankun Zhang Xiaoyang Li

作者单位: Science and Technology on Reliability and Environmental Engineering Laboratory,School of Reliability and Systems Engineering, Beihang University, Beijing, China

会议类型: 国际会议

会议名称: the International Conference Vibroengineering-2014

会议地点: 贵阳

会议语种:英文

页码: 259-264

在线出版日期: 2014-11-07（万方平台首次上网日期，不代表论文的发表时间）