ABSTRACT
The entire life cycle of an engine is an asymmetric process, and the characteristics of its internal components are different. It is of great significance to extract engine degradation features and build models for improving the RUL prediction of the main engine. In this paper, a RUL prediction method based on CBAM attention mechanism is designed. For long time series engine data, using Convolutional Neural Network (CNN) to extract features and share convolutional kernels can process high-dimensional data well. The purpose of adding a Gated Recurrent Unit (GRU) network is to use the GRU network to sequentially model the feature expressions extracted from the CNN network and learn the sequential correlation of data. Convolutional block attention module (CBAM) is introduced as a mechanism to reduce the influence of different data lengths on the final prediction by focusing on the channels and spaces. This paper validates the above prediction method on two different engine datasets. The prediction method can effectively mine the internal time and space dependence between multiple sensor data, improve the precision of RUL prediction, and prove that the method has good applicability and effectiveness.
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Index Terms
- Research on Remaining Useful Life Prediction of Dual-fuel Main EngineBased on CBAM Attention Mechanism
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