| Citation: | YANG P D,HUANG H,YU W W,et al. Tool wear prediction based on attention mechanism and PSO-BiLSTM[J]. Journal of Beijing University of Aeronautics and Astronautics,2025,51(10):3589-3598 (in Chinese) doi: 10.13700/j.bh.1001-5965.2023.0545 |
A bi-directional long short-term memory (BiLSTM) neural network optimization end-to-end tool wear prediction method based on attention mechanism (AM) and particle swarm optimization (PSO) algorithm is proposed to address the issues of single monitoring data and poor feature signal processing in tool wear fault diagnosis. Firstly, based on the sensor data, to construct high-quality signal input samples, extract the multi-domain feature. With multi-sensor data to obtain the fused data samples with higher robustness, the Kalman filter is used to fuse the input samples. On this basis, the hyperparameters of the BiLSTM are optimized by PSO, and the neural network model is built according to the optimized hyperparameters. Finally, based on the attention mechanism to give weights to the input influences, the PSO-BiLSTM is improved to obtain a better tool wear prediction. The suggested model's validity and feasibility in tool wear prediction are confirmed by comparative experimental findings, and its accuracy is significantly higher than that of classical deep learning. This approach offers a fresh viewpoint on tool wear prediction.
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