A Spectrogram Vision Transformer (ViT) Approach for Cross-Domain Bearing Fault Diagnosis on the UORED-VAFCLS Dataset
Resumo
Este artigo aborda a limitação na generalização entre domínios no diagnóstico de falhas em rolamentos a partir de dados tradicionais de séries temporais. O estudo propõe uma abordagem baseada em espectrogramas utilizando modelos avançados de Vision Transformer (ViT)—ViT, DeiT, DINOv2, SwinV2 e MAE—validada em imagens de espectrogramas derivadas de dados de acelerômetro do dataset UORED-VAFCLS. Uma estratégia pré-existente de divisão por domínios é iterada para avaliar o desempenho dos modelos em diferentes severidades de falha. Os resultados demonstram que o método proposto baseado em espectrogramas e ViT supera substancialmente a abordagem CNN-LSTM, considerada o estado da arte, estabelecendo um caminho promissor para diagnósticos robustos de falhas em rolamentos entre diferentes domínios..
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