现代制造工程Issue(6)：6-10,26,6.
基于过完备字典的基追踪法在轴承故障诊断中的应用
Application of basis pursuit based on over-complete dictionary to rolling bearing fault diagnosis
摘要
Abstract
Rolling bearing fault has the characteristics of compound signal and strong environmental noise.By building an over-complete dictionary that is sensitive to the rolling bearing fault, the basis pursuit is used to obtain the optimal sparse representa-tion of compound signal.The excellent effect of time-frequency structure of impulse can be acquired, and the noise can be re-duced.The fault characteristic frequency is proved to be specific from the spectral analysis results of reconstructed signals.The analysis results of simulating data and experimental data show that the proposed method has a good denoising effect and it can ob-tain the early impact characteristics from damage signal accurately.关键词
过完备字典/基追踪/故障诊断/时频分析Key words
over-complete dictionary/basis pursuit/fault diagnosis/time-frequency analysis分类
信息技术与安全科学引用本文复制引用
欧伟光,张春良,岳夏,刘威..基于过完备字典的基追踪法在轴承故障诊断中的应用[J].现代制造工程,2015,(6):6-10,26,6.基金项目
国家自然科学基金资助项目（51275099）；国家青年自然科学基金资助项目（E050302）；广东省自然科学基金资助项目（S2012010009505）；广州市羊城学者首席科学家项目（12A006S）；广州市机电设备状态监测与控制重点实验室建设项目 （）
