HAN Yuntong,WANG Jingyue,HOU Xingda,et al. Service life prediction method for in-service bearings based on the improved CNN-LSTM model[J]. Journal of Mechanical Strength,2026,48(2):40-46.
HAN Yuntong,WANG Jingyue,HOU Xingda,et al. Service life prediction method for in-service bearings based on the improved CNN-LSTM model[J]. Journal of Mechanical Strength,2026,48(2):40-46. DOI: 10.16579/j.issn.1001.9669.2026.02.005.
SERVICE LIFE PREDICTION METHOD FOR IN-SERVICE BEARINGS BASED ON THE IMPROVED CNN-LSTM MODEL
Aiming at the problems of complex parameter adjustment and limited prediction accuracy in traditional convolutional neural network-long short-term memory (CNN-LSTM) models
an improved remaining useful life prediction method was proposed to enhance the accuracy and stability of life prediction for in-service rolling bearings.
Methods
2
Firstly
the golden sine strategy was integrated into the golden sparrow search algorithm (GSSA) to improve its global and local search capabilities
enabling adaptive optimization of key parameters in the CNN-LSTM model. Secondly
a feature screening system based on correlation
monotonicity
and robustness was constructed to select highly sensitive degradation features. Finally
using the PHM2012 bearing dataset
a GSSA-CNN-LSTM prediction model was established
and its effectiveness was validated through comparisons with back propagation (BP) neural network and CNN-LSTM model.
Results
2
The results showed that the proposed GSSA-CNN-LSTM model reduced the root mean square error
mean absolute error
and mean square error by 67.61%
83.71%
80.89% and 61.18%
78.78%
51.02%
respectively
compared with the BP neural network and CNN-LSTM models
while the determination coefficient was closer to 1
demonstrating significant improvements in prediction accuracy and robustness.
关键词
Keywords
references
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