Fault Diagnosis and Health Monitoring of Mechanical Systems

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Mechanical Engineering".

Deadline for manuscript submissions: 20 September 2024 | Viewed by 116

Special Issue Editors


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Guest Editor
State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China
Interests: signal processing; data mining; edge computing; digital twin; interpretable deep learning; and intelligent monitoring system for fault diagnosis and health monitoring of machines

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Guest Editor
School of Civil Aviation, Northwestern Polytechnical University, Xi’an 710072, China
Interests: intelligent sensing; condition monitoring; fault diagnosis; dynamics modeling; signal processing; data analysis

Special Issue Information

Dear Colleagues,

In recent years, the fault diagnosis and health monitoring of mechanical systems have played an increasingly important role in automated and intelligent industrial applications. Although many studies related to mechanism modeling and data-driven and artificial intelligence have been proposed, there are still issues that need further study. These issues include the intelligent fault diagnosis of mechanical systems, such as nonlinear system dynamics modeling analysis, early weak fault detection, multi-source information decoupling and separation, trend assessment and prediction under complex operating conditions, interpretable deep learning, and digital twin algorithms.

This Special Issue aims to publish the latest advancements and research findings in the field of mechanical systems’ fault diagnosis, as well as the health monitoring and interpretable intelligent recognition. It aims to explore innovative theories, methodologies, and technologies employed in ensuring the safety and longevity of mechanical systems. Topics covered may include, but are not limited to, dynamics mechanism analysis, signal adaptive filtering, blind source separation, predictive maintenance techniques, information fusion, intelligent systems’ fault diagnosis, predictive techniques, IoT applications, interpretable deep learning algorithms, and digital twin approaches to mechanical systems’ health maintenance. The Special Issue provides a platform for experts, scholars, and research groups in related fields to share their insights, experiences, and solutions contributing to the advancement of the intelligent fault diagnosis and health monitoring of mechanical systems.

Dr. Xiaoxi Ding
Dr. Jun Zhu
Guest Editors

Manuscript Submission Information

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Keywords

  • dynamics mechanism modeling
  • signal adaptive filtering
  • mode decomposition
  • blind source separation
  • information fusion
  • intelligent fault diagnosis
  • predictive maintenance techniques
  • interpretable deep learning
  • internet of things applications
  • digital twin approaches to mechanical systems health maintenance

Published Papers (1 paper)

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Research

24 pages, 5759 KiB  
Article
A New Order Tracking Method for Fault Diagnosis of Gearbox under Non-Stationary Working Conditions Based on In Situ Gravity Acceleration Decomposition
by Yanlei Li, Zhongyang Chen and Liming Wang
Appl. Sci. 2024, 14(11), 4742; https://doi.org/10.3390/app14114742 - 30 May 2024
Abstract
Abstract: Rotational speed measuring is important in order tracking under non-stational working conditions. However, sometimes, encoders or coded discs are not easy to mount due to the limited measurement environment. In this paper, a new in situ gravity acceleration decomposition method (GAD) [...] Read more.
Abstract: Rotational speed measuring is important in order tracking under non-stational working conditions. However, sometimes, encoders or coded discs are not easy to mount due to the limited measurement environment. In this paper, a new in situ gravity acceleration decomposition method (GAD) is proposed for rotational speed estimation, and it is applied in the order tracking scene for fault diagnosis of a gearbox under non-stationary working conditions. In the proposed method, a MEMS accelerometer is locally embedded on the rotating shaft or disc in the tangential direction. The time-varying gravity acceleration component is sensed by the in situ accelerometer during the rotation of the shaft or disc. The GAD method is established to exploit the gravity acceleration component based on the linear-phase finite impulse response (FIR) filter and complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) methods. Then, the phase signal of time-varying gravity acceleration is derived for rotational speed estimations. A motor–shaft–disc experimental setup is established to verify the correctness and effectiveness of the proposed method in comparison to a mounted encoder. The results show that both the estimated average and instantaneous rotational speed agree well with the mounted encoder. Furthermore, both the proposed GAD method and the traditional vibration-based tacholess speed estimation methods are applied in the context of order tracking for fault diagnosis of a gearbox. The results demonstrate the superiority of the proposed method in the detection of tooth spalling faults under non-stationary working conditions. Full article
(This article belongs to the Special Issue Fault Diagnosis and Health Monitoring of Mechanical Systems)
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