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Electronics
Special Issues
Large-Scale and Complex Systems: Advances in Modeling and Control
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Large-Scale and Complex Systems: Advances in Modeling and Control

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Systems & Control Engineering".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 4041

Special Issue Editors

Prof. Dr. Danica Rosinová

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Guest Editor
Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava, Bratislava, Slovakia
Interests: robust control; optimization; LMI; decentralized control
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Alena Kozáková

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Guest Editor
Institute of Automotive Mechatronics, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava, Bratislava, Slovakia
Interests: decentralized control; robust control; frequency domain control approaches; optimal control
Dr. Kenric Nelson

E-Mail Website
Guest Editor
Photrek, Watertown, MA 02109, USA
Interests: complex systems; deep learning; machine intelligence; nonlinear systems; probability and statistics; electrical engineering
Dr. Marek Bolanowski

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Guest Editor
Department of Complex Systems, Rzeszow University of Technology, Al. Powstancow Warszawy 12, 35-959 Rzeszow, Poland
Interests: distributed systems; self-aware and autonomous systems; anomaly detection; Industry 4.0; Internet of Everything; cybersecurity; complex communication systems; SDN networks; PoC systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Rapid progress in information and communication technologies in recent decades has strengthened the importance of research on large-scale and complex systems, as well as their monitoring, diagnostics, and control. The aim of this Special Issue is to collect selected papers on the latest developments and trends in modeling and control of complex systems composed of several interconnected subsystems, which are characterized by many variables, nonlinearities, uncertainties, and/or a networked structure. The issue focuses on presentation of innovative decentralized, hierarchical multilayer–multilevel, and multiagent modeling and control methods as well as risk-based decision-making technologies, practical solutions utilizing the latest advances in information and communication technologies including embedded systems, and the IoT and Industrial IoT. Papers ranging from theoretical works to engineering applications are invited.

Prof. Dr. Danica Rosinová
Prof. Dr. Alena Kozáková
Dr. Kenric Nelson
Prof. Dr. Marek Bolanowski
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. Electronics is an international peer-reviewed open access semimonthly 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

  • Complex systems
  • Cyberphysical systems
  • Decentralized control
  • Hierarchical systems
  • Industrial Internet of Things
  • Large-scale systems
  • Multiagent systems
  • Network control systems

Published Papers (2 papers)

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21 pages, 5455 KiB  
Article
Decentralized QFT Controller Design Based on the Equivalent Subsystems Method
by Alena Kozáková, Romana Čápková and Štefan Kozák
Electronics 2023, 12(17), 3658; https://doi.org/10.3390/electronics12173658 - 30 Aug 2023
Cited by 1 | Viewed by 647
Abstract
Since the 1970s various decentralized control methodologies have been developed to deal with the challenge of controlling complex and/or spatially distributed systems with multiple inputs and multiple outputs (MIMO), e.g., chemical plants, power systems, water systems, etc. In general, the use of distributed [...] Read more.
Since the 1970s various decentralized control methodologies have been developed to deal with the challenge of controlling complex and/or spatially distributed systems with multiple inputs and multiple outputs (MIMO), e.g., chemical plants, power systems, water systems, etc. In general, the use of distributed information and control structures requires the synthesis of control laws in a constrained (decentralized) information structure. The article presents a novel frequency domain robust decentralized controller design method that is appropriate for uncertain dynamic MIMO systems with equal numbers of input and output variables, which consist of interconnected physical subsystems and are given as a set of square transfer function matrices. The main framework of the proposed method provides the Equivalent Subsystems Method (ESM), whereby the overall closed-loop system under a decentralized controller is stable if, and only if, all the individual closed-loop equivalent subsystems are stable. By generating equivalent subsystems for all transfer matrices, which describe the uncertain MIMO system, the individual uncertain equivalent subsystems are obtained as sets of respective frequency responses. Such representation allows the application of the QFT (quantitative feedback theory) approach to independently design local single-input single-output (SISO) robust controllers which constitute the resulting decentralized controller implemented in real subsystems. The designed controller ensures robust stability of the overall closed-loop system and the required performance as specified by the standard QFT performance specification types in both the equivalent subsystems and the overall closed-loop system. Compared to the existing method and references therein, the proposed method reduces the conservatism of the robust stability conditions and enables the exploitation of the benefits by the SISO QFT approach in the independent design of the robust decentralized controller. The developed design procedure is verified and illustrated in a case study on the robust decentralized level controller design of the quadruple tank process. Full article
(This article belongs to the Special Issue Large-Scale and Complex Systems: Advances in Modeling and Control)
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33 pages, 6020 KiB  
Article
ASSIST-IoT: A Modular Implementation of a Reference Architecture for the Next Generation Internet of Things
by Paweł Szmeja, Alejandro Fornés-Leal, Ignacio Lacalle, Carlos E. Palau, Maria Ganzha, Wiesław Pawłowski, Marcin Paprzycki and Johan Schabbink
Electronics 2023, 12(4), 854; https://doi.org/10.3390/electronics12040854 - 08 Feb 2023
Cited by 12 | Viewed by 2794
Abstract
Next Generation Internet of Things (NGIoT) addresses the deployment of complex, novel IoT ecosystems. These ecosystems are related to different technologies and initiatives, such as 5G/6G, AI, cybersecurity, and data science. The interaction with these disciplines requires addressing complex challenges related with the [...] Read more.
Next Generation Internet of Things (NGIoT) addresses the deployment of complex, novel IoT ecosystems. These ecosystems are related to different technologies and initiatives, such as 5G/6G, AI, cybersecurity, and data science. The interaction with these disciplines requires addressing complex challenges related with the implementation of flexible solutions that mix heterogeneous software and hardware, while providing high levels of customisability and manageability, creating the need for a blueprint reference architecture (RA) independent of particular existing vertical markets (e.g., energy, automotive, or smart cities). Different initiatives have partially dealt with the requirements of the architecture. However, the first complete, consolidated NGIoT RA, covering the hardware and software building blocks, and needed for the advent of NGIoT, has been designed in the ASSIST-IoT project. The ASSIST-IoT RA delivers a layered and modular design that divides the edge-cloud continuum into independent functions and cross-cutting capabilities. This contribution discusses practical aspects of implementation of the proposed architecture within the context of real-world applications. In particular, it is shown how use of cloud-native concepts (microservices and applications, containerisation, and orchestration) applied to the edge-cloud continuum IoT systems results in bringing the ASSIST-IoT concepts to reality. The description of how the design elements can be implemented in practice is presented in the context of an ecosystem, where independent software packages are deployed and run at the selected points in the hardware environment. Both implementation aspects and functionality of selected groups of virtual artefacts (micro-applications called enablers) are described, along with the hardware and software contexts in which they run. Full article
(This article belongs to the Special Issue Large-Scale and Complex Systems: Advances in Modeling and Control)
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