Intelligent Manufacturing Technology

Improved Multi-Bandwidth Mode Manifold for Enhanced Bearing Fault Diagnosis

  • Guifu Du ,
  • Tao Jiang ,
  • Jun Wang ,
  • Xingxing Jiang ,
  • Zhongkui Zhu
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  • School of Rail Transportation, Soochow University, Suzhou, 215131, China

Received date: 2020-03-24

  Revised date: 2021-04-16

  Online published: 2022-06-30

Supported by

Supported by National Natural Science Foundation of China (Grant Nos. 51805342, 51875376, 52007128), Jiangsu Provincial Natural Science Foundation of China (Grant No. BK20180842), China Postdoctoral Science Foundation (Grant Nos. 2021M692354, 2018M640514), Suzhou Prospective Research Program of China (Grant No. SYG201932), and Jiangsu Provincial Natural Science Fund for Colleges and Universities of China (Grant No. 18KJB470022)

Abstract

Variational mode decomposition (VMD) has been proved to be useful for extraction of fault-induced transients of rolling bearings. Multi-bandwidth mode manifold (Triple M, TM) is one variation of the VMD, which units multiple fault-related modes with different bandwidths by a nonlinear manifold learning algorithm named local tangent space alignment (LTSA). The merit of the TM method is that the bearing fault-induced transients extracted contain low level of in-band noise without optimization of the VMD parameters. However, the determination of the neighborhood size of the LTSA is time-consuming, and the extracted fault-induced transients may have the problem of asymmetry in the up-and-down direction. This paper aims to improve the efficiency and waveform symmetry of the TM method. Specifically, the multi-bandwidth modes consisting of the fault-related modes with different bandwidths are first obtained by repeating the recycling VMD (RVMD) method with different bandwidth balance parameters. Then, the LTSA algorithm is performed on the multi-bandwidth modes to extract their inherent manifold structure, in which the natural nearest neighbor (Triple N, TN) algorithm is adopted to efficiently and reasonably select the neighbors of each data point in the multi-bandwidth modes. Finally, a weight-based feature compensation strategy is designed to synthesize the low-dimensional manifold features to alleviate the asymmetry problem, resulting in a symmetric TM feature that can represent the real fault transient components. The major contribution of the improved TM method for bearing fault diagnosis is that the pure fault-induced transients are extracted efficiently and are symmetrical as the real. One simulation analysis and two experimental applications in bearing fault diagnosis validate the enhanced performance of the improved TM method over the traditional methods. This research proposes a bearing fault diagnosis method which has the advantages of high efficiency, good waveform symmetry and enhanced in-band noise removal capability.

Cite this article

Guifu Du , Tao Jiang , Jun Wang , Xingxing Jiang , Zhongkui Zhu . Improved Multi-Bandwidth Mode Manifold for Enhanced Bearing Fault Diagnosis[J]. Chinese Journal of Mechanical Engineering, 2022 , 35(1) : 14 -14 . DOI: 10.1186/s10033-022-00677-5

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