The improved LMD algorithm and its application in bearing fault diagnosis

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (8) : 183-186.

Li Lin，Zhang Yongxiang，Ming Tingfeng

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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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Li Lin，Zhang Yongxiang，Ming Tingfeng. The improved LMD algorithm and its application in bearing fault diagnosis[J]. Journal of Vibration and Shock, 2016, 35(8): 183-186

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