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Symmetry
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Symmetry in Reliability Engineering
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Symmetry in Reliability Engineering

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Engineering and Materials".

Deadline for manuscript submissions: 30 June 2025 | Viewed by 2982

Special Issue Editors

Dr. Di Liu

E-Mail Website
Guest Editor
School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
Interests: failure mechanism analysis; degradation modeling; reliability estimation; prognostics and health management
Special Issues, Collections and Topics in MDPI journals
Dr. Cun Shi

E-Mail Website
Guest Editor
School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
Interests: prognostics and health management; performance degradation; nonlinear control for mechatronic systems
Special Issues, Collections and Topics in MDPI journals
Dr. Xiaoyu Cui

E-Mail Website
Guest Editor
School of Artificial Intelligence, Beijing Technology and Business University, Beijing 100048, China
Interests: health management; network reliability

Special Issue Information

Dear Colleagues,

Modern products and systems are always desired to be highly reliable. As a result, reliability engineering becomes an important subject, with research on improving product reliability. The purpose of this Special Issue is to show and share new ideas and achievements of reliability estimation approaches, reliability prediction methods, reliability design tools, and related applications in engineering practices with relevant experts, scholars, and engineers around the world. Symmetric and asymmetry properties are commonly inherent in numerous physical and engineering systems, and have been studied by various researchers. We would like to invite experts to contribute their research by employing symmetry or asymmetry concepts in their methods and methodologies. The topics of this Special Issue include, but are not limited to, the following: prognostics and health management, failure mechanism analysis, degradation modeling, reliability estimation, fault-tolerant control, fault diagnosis, health management, network reliability analysis, maintenance strategy, and digital twins. Manuscript types include original research papers, reviews, and letters.

Dr. Di Liu
Dr. Cun Shi
Dr. Xiaoyu Cui
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Symmetry is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • prognostics and health management
  • failure mechanism analysis
  • degradation modeling
  • reliability estimation
  • fault-tolerant control
  • fault diagnosis
  • health management
  • network reliability analysis
  • maintenance strategy
  • digital twins

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

28 pages, 6013 KiB  
Article
Concomitant Observer-Based Multi-Level Fault-Tolerant Control for Near-Space Vehicles with New Type Dissimilar Redundant Actuation System
by Meiling Wang, Jun Wang and Jian Huang
Symmetry 2024, 16(9), 1221; https://doi.org/10.3390/sym16091221 - 17 Sep 2024
Cited by 1 | Viewed by 1408
Abstract
This paper presents a concomitant observer-based multi-level fault-tolerant control (FTC) for near-space vehicles (NSVs) with a new type dissimilar redundant actuation system (NT-DRAS). When NSV flight control system faults occur in NT-DRAS and attitude-corresponding sensors, the NSV hybrid output states, including the concomitant [...] Read more.
This paper presents a concomitant observer-based multi-level fault-tolerant control (FTC) for near-space vehicles (NSVs) with a new type dissimilar redundant actuation system (NT-DRAS). When NSV flight control system faults occur in NT-DRAS and attitude-corresponding sensors, the NSV hybrid output states, including the concomitant observer usable states and the real system states, are applied to solve the FTC gain by using the linear quadratic regulator (LQR) technique. Furthermore, since NT-DRAS is used in NSVs, a multi-level (actuation system level and flight control level) FTC strategy integrating NT-DRAS channel switching and flight control LQR is proposed for complex and worsening fault cases. The most important finding is that though the proposed strategy is applicable for worsening fault cases in NSVs, systematic and accurate criteria for the process being performed are necessary and can improve the FTC efficiency with minimal FTC resources. Additionally, such criteria can improve the NSV’s responsiveness to comprehensive faults, provided that the real-time performance of the fault detection and diagnosis (FDD) scheme can be further optimized. The concomitant observer convergence and the multi-level FTC strategy have been verified by numerical simulations based on the Matlab/Simulink platform. Full article
(This article belongs to the Special Issue Symmetry in Reliability Engineering)
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14 pages, 1813 KiB  
Article
Research on Classification Maintenance Strategy for More Electric Aircraft Actuation Systems Based on Importance Measure
by Xiaoyu Cui, Xuanhao Li, Zhiyao Zhao, Jiabin Yu and Di Liu
Symmetry 2024, 16(9), 1127; https://doi.org/10.3390/sym16091127 - 31 Aug 2024
Cited by 1 | Viewed by 1036
Abstract
In this paper, a practical maintenance algorithm is proposed to improve the reliability of actuation systems and their components, specifically addressing the consistency degradation caused by faults in the symmetric actuation system components of more electric aircraft (MEA). By integrating important measures with [...] Read more.
In this paper, a practical maintenance algorithm is proposed to improve the reliability of actuation systems and their components, specifically addressing the consistency degradation caused by faults in the symmetric actuation system components of more electric aircraft (MEA). By integrating important measures with traditional genetic algorithms, the accuracy of the algorithm is improved. Prior to maintenance, a reasonable classification of components is built to mitigate the adverse effects of extreme fault conditions on the algorithm. This approach improves both the effectiveness and efficiency of the algorithm, rendering the overall maintenance strategy better suited for real-world needs. Finally, comparative simulations confirm the algorithm’s superior performance in reliability improvement, demonstrating its substantial contribution to the field of MEA maintenance and reliability. Full article
(This article belongs to the Special Issue Symmetry in Reliability Engineering)
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