Rolling Bearing Fault Diagnosis Method Base on Periodic Sparse Attention and LSTM

被引:70
|
作者
An, Yiyao [1 ]
Zhang, Ke [1 ]
Liu, Qie [1 ]
Chai, Yi [1 ]
Huang, Xinghua [1 ]
机构
[1] Chongqing Univ, Coll Automat, Chongqing 400044, Peoples R China
关键词
Feature extraction; Vibrations; Rolling bearings; Fault diagnosis; Time series analysis; Interference; Computational complexity; Attention mechanism; LSTM; intermittent faults diagnosis; rolling bearing; ROTATING MACHINERY; MODEL; ENTROPY;
D O I
10.1109/JSEN.2022.3173446
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The rolling bearing fault signals are complex time series with complex dynamic characteristics and non-uniform periodicity due to the influence of random interference, such as random impulse noise and equipment vibration. This will affect the accuracy of the diagnostis method. This paper analyses the characteristics of bearing fault signals and discussed the basic ideas of current diagnosis methods. In order to decrease the computational complexity in time series analysis process and reduce the influence of random interference in subsequent feature extraction, this paper proposes a rolling bearing fault diagnosis method base on periodic sparse attention and LSTM (PSAL) for non-uniform bearing vibration signals. According to the periodic characteristics of bearing fault, a periodic sparse attention network is proposed to decrease the time consumption in the process of reducing the influence of random interference and enhancing the feature. Then, LSTM is used to extract long-term dependence features in the fault signals. Finally, two sets of rolling bearing datasets are adopted to verify the validity and superiority of the proposed method by comparing with other methods.
引用
收藏
页码:12044 / 12053
页数:10
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