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Abstract To decrease the error induced by the boundary effect in the process of LMD, a new method is introduced which is based on the grades changing. After comparison with other methods by simulation, this method is proved to be more accurate. As the vibration signal of the faulty rolling element bearing is composed by a series of modulating signal, the improved LMD is applied to the fault diagnosis of bearing. This application, in which the SVD is used for noise reduction, is proved to be effective and feasible by experiment.
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Received: 09 March 2015
Published: 15 April 2016
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[1] 陈龙.基于时延自相关与局部均值分解的齿轮故障诊断方法的研究[D],华东理工大学硕士学位论文,2003.01
Chen Long. The Research of Gear Fault Diagnosis Based on Delayed Autocorrelation and LMD[D]. East China University of Science and Technology. master’s thesis, 2013.01
[2] 程军圣,杨怡,杨宇. 基于LMD的能量算子解调机械故障诊断方法[J],振动、测试于诊断,2012年12月,Vol.32 No.6: 915-919;
Cheng Junsheng, Yang Yi, Yang Yu. Mechanical Fault Diagnosis of Energy Operator Demodulating Approach Based on LMD[J]. Journal of Vibration, Measurement & Diagnosis, 2012.12,Vol.32 No.6: 915-919;
[3] 宋海军,黄传金,刘宏超,陈铁军,李景丽,罗勇. 基于改进LMD的电能质量扰动检测新方法[J]. 中国电机工程学报, 2014年4月, Vol.34,No.10:1700-1708;
Song Haijun, Huang Chuangjin, Liu Hongchao. A New Power Quality Disturbance Detection Method Based on the Improved LMD[J]. Proceedings of the CSEE, 2014.4, Vol.34,No.10:1700-1708;
[4] 杨武. 基于LMD的AR模型在旋转机械故障诊断中的应用[D]. 大连交通大学硕士学位论文,2013.06.
Yang Wu. AR Model Based LMD Applied for Diagnosising Fault of Rotating Machine[D]. Dalian Jiao Tong University, master’s thesis, 2013.6
[5]Jonathan S Smith，The local mean decomposition method and its application to EEG perception data[J], Journal of the Royal Society Interface, 2005,2(5): 443-454;
[6] 程军圣,罗颂荣,杨斌,杨宇. LMD能量矩和变量预测模型模式识别在轴承故障诊断中的应用[J], 振动工程学报,2013年10月,Vol.26, No.5: 751-757;
Cheng Junsheng, Luo songrong, Yang Bin, Yang Yu. LMD energy moment and variable predictive model based class discriminate and their application in intelligent fault diagnosis of roller bearing[J]. Journal of Vibration Engineering, 2013.10,Vol.26, No.5: 751-757;
[7] 刘树勇,朱石坚,俞翔. 确定相空间重构嵌入维数的研究[J], 哈尔滨工程大学学报, 2008年4月,Vol.29,No.4:374-380;
Liu Shuyong, Zhu shijian, Yu Xiang. Determinating the embedding dimension in phase space reconstruction[J]. Journal of Harbin Engineering University, 2008.4,Vol.29,No.4:374-380;
[8] Luis A. A nonlinear correlation function for selecting the delay time in dynamic reconstructions[J]. Physics Letter A, 1995, 203:88-94.
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