Symmetry, Fault Detection, and Diagnosis in Automatic Control Systems

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 327

Special Issue Editor


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Guest Editor
College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Interests: advance control theory and application methods (with emphasis on sliding mode theory and intelligent optimization) in health evaluate; fault diagnosis; fault-tolerant control of energy and power systems; microgrids; electromechanical systems

Special Issue Information

Dear Colleagues,

In today’s rapidly developing automation technology, we need to pay more attention to the health, stability, fault tolerance, and safety of automatic control systems.

Symmetric and asymmetric faults are widely present in automatic control systems.

Three-phase short circuit fault is a type of symmetrical fault, which is a serious fault that must be avoided as much as possible. or its impact must be cut off as soon as possible, such as taking timely fault-tolerant measures.

Asymmetric faults such as single-phase grounding, two-phase short circuit, and two-phase short circuit grounding faults also need to be detected and diagnosed early.

For some complex energy and power systems, it is necessary to regularly monitor the health status of the system, effectively provide health assessments, and ensure the long-term safety of the system.

Therefore, in-depth research on the causes and effects of symmetrical and asymmetrical faults in automatic control systems, exploration of fault detection and diagnosis methods, accurate assessment of the health status of control systems, efficient fault detection and diagnosis, and rapid adoption of fault-tolerant measures have become the problems we must face.

This Special Issue of the journal Symmetry invites contributions illustrating the symmetrical and asymmetric fault phenomena in automatic control systems, exploring detection and diagnosis methods for symmetrical and asymmetrical faults, fault-tolerant strategies and methods, and studying health assessment and management methods for automatic control systems.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • Fault diagnosis and fault-tolerant control under symmetrical or asymmetrical faults in sustainable energy systems;
  • Fault tolerant control of permanent magnet generator set under symmetrical or asymmetrical faults;
  • Fault diagnosis and fault-tolerant control under symmetrical or asymmetrical faults of inverters;
  • Fault diagnosis and fault-tolerant control under symmetrical or asymmetrical faults in microgrids;
  • Sustainable energy system health evaluation and management;
  • Power system health evaluation and management.

I look forward to receiving your contributions.

Dr. Lingfei Xiao
Guest Editor

Manuscript Submission Information

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Keywords

  • fault diagnosis
  • fault-tolerant control
  • health evaluation
  • energy systems
  • power systems
  • microgrids
  • electromechanical systems

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Published Papers (1 paper)

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Research

14 pages, 2531 KiB  
Article
On Design of IIR Cascaded-Resonator-Based Complex Filter Banks
by Miodrag D. Kušljević
Symmetry 2025, 17(5), 657; https://doi.org/10.3390/sym17050657 - 26 Apr 2025
Viewed by 122
Abstract
This paper extends the research on cascaded-resonator (CR)-based filter banks introduced in previous studies. These IIR filter banks are online adaptive, making them highly suitable for spectral decomposition and signal analysis. The multiple-resonator-based structure offers an efficient design with low side lobes and [...] Read more.
This paper extends the research on cascaded-resonator (CR)-based filter banks introduced in previous studies. These IIR filter banks are online adaptive, making them highly suitable for spectral decomposition and signal analysis. The multiple-resonator-based structure offers an efficient design with low side lobes and high stopband attenuation. While earlier works focused on the fundamental structure and principles of these filter banks, the efficiency of their design was not thoroughly explored. In this study, thanks to the full periodicity of the frequency response, significant improvements in the modeling of the characteristic polynomial (the denominator of the transfer function) and preprocessing filters are introduced, resulting in an enhanced sparsity and a computational efficiency. Additionally, the previously employed linear programming algorithm for solving semi-infinite problems including a large number of linear constraints is replaced by more advanced quadratic programming (QP) or linear least-squares (LLS) optimization methods. These changes lead to a much faster and more powerful design process, even for filter banks with a larger number of resonator cascades and/or resonators per cascade. Furthermore, additional enhancements to the design methodology are proposed, further improving the robustness and applicability of the filters. These advancements enable the creation of highly efficient filter banks capable of handling complex and dynamic spectral analysis tasks in real time. Full article
(This article belongs to the Special Issue Symmetry, Fault Detection, and Diagnosis in Automatic Control Systems)
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