Performance degradation assessment of slewing bearings based on deep auto-encoder and optimized particle filtering

Yubin Pan, Rongjing Hong, Jie Chen, Weiwei Wu

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Due to the low speed and heavy load conditions of slewing bearings, extracting of effective features for fault diagnosis and prediction is difficult but crucial. Moreover, challenges such as large data volumes, unlabeled and multi-source bring more difficulties for advanced prognosis and health management methods. To solve these problems, a novel method for performance degradation assessment of bearings based on raw signals is proposed. In this methodology, a combination of deep auto-encoder (DAE) algorithm and particle filter algorithm is utilized for feature extraction and remaining useful life (RUL) prediction. First, the raw vibration signal is employed to train parameters of a restricted Boltzmann machine to build the DAE model. Through encoding and decoding multi-source data, root mean square error of reconstruction error between the raw signal and reconstructed signal is employed to detect incipient faults of slewing bearings. Then, degradation trend model is established by particle filtering to predict RUL of bearings. The effectiveness of proposed method is validated using simulated and experimental vibration signals. Results illustrate that proposed method can evaluate the performance degradation process and RUL of slewing bearings.

Original languageEnglish
Pages (from-to)2380-2394
Number of pages15
JournalJVC/Journal of Vibration and Control
Volume25
Issue number17
DOIs
StatePublished - 1 Sep 2019

Keywords

  • Slewing bearing
  • deep auto-encoder
  • feature extraction
  • particle filter
  • remaining useful life prediction

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