Fault diagnosis of imbalance and misalignment in rotor-bearing systems using deep learning

• Autorzy: Liu Fayou , Li Weijia , Wu Yaozhong , He Yuhang , Li Tianyun

Identyfikatory

DOI

10.2478/pomr-2024-0011

• Języki publikacji: EN

Abstrakty

EN

Rotor-bearing systems are important components of rotating machinery and transmission systems, and imbalance and misalignment are inevitable in such systems. At present, the main challenges faced by state-of-the-art fault diagnosis methods involve the extraction of fault features under strong background noise and the classification of different fault modes. In this paper, a fault diagnosis method based on an improved deep residual shrinkage network (IDRSN) is proposed with the aim of achieving end-to-end fault diagnosis of a rotor-bearing system. First, a method called wavelet threshold denoising and variational mode decomposition (WTD-VMD) is proposed, which can proces original noisy signals into intrinsic mode functions (IMFs) with a salient feature. These one-dimensional IMFs are then transformed into two-dimensional images using a Gramian angular field (GAF) to give datasets for the deep residual shrinkage network (DRSN), which can achieve high levels of accuracy under strong background noise. Finally, a comprehensive test platform for a rotor-bearing system is built to verify the effectiveness of the proposed method in the field. The true test accuracy of the model at a 95% confidence interval is found to range from 84.09% to 86.51%. The proposed model exhibits good robustness when dealing with noisy samples and gives the best classification results for fault diagnosis under misalignment, with a test accuracy of 100%. It also achieves a higher testing accuracy compared to fault diagnosis methods based on convolutional neural networks and deep residual networks without improvement. In summary, IDRSN has significant value for deep learning engineering applications involving the fault diagnosis of rotor-bearing systems.

Słowa kluczowe

EN

rotor-bearing system; vibration signal; feature extraction; deep learning; deep residual shrinkage network; test platform

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2024
• Tom: nr 1
• Strony: 102--113
• Opis fizyczny: Bibliogr. 27 poz., rys., tab.

Twórcy

autor

Liu Fayou

• Huazhong University of Science and Technology, School of Naval Architecture and Ocean Engineering, China

• https://orcid.org/0000-0002-6574-7733

autor

Li Weijia

• Huazhong University of Science and Technology, School of Naval Architecture and Ocean Engineering, China

autor

Wu Yaozhong

• School of Automobile and Traffic Engineering, Wuhan University of Science and Technology, China

autor

He Yuhang

• Huazhong University of Science and Technology, School of Naval Architecture and Ocean Engineering, China

autor

Li Tianyun

• Huazhong University of Science and Technology, School of Naval Architecture and Ocean Engineering, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki i promocja sportu (2025).