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Investigation Methods of Parameters Random Variations in Control Systems
P. 1–5.
Most publications on the theory and practice of creating control systems are devoted to deterministic problems, when the input quantities and output characteristics have deterministic values or functions. In the article, the authors draw attention to the fact that all input and output signals, as well as the internal parameters of control systems, always have random variations. Technological random deviations have parameters for construction materials and electronic components and devices. In addition, the ambient temperature randomly influences the control systems, mechanical effects from the installation object, as well as temporary aging, wear and other factors. The authors draw attention to the insufficient number of publications devoted to the system discussion of probabilistic methods for studying control systems. In this article, the authors not only systematized the methods for studying random variations in the parameters of control systems, but also set forth their unified approach to solving the most frequently encountered problems of studying accuracy, stability, serial seriality and parametric reliability in the case of gradual failure of control systems. The necessary mathematical apparatus is given.
Keywords: stabilitycontrol systemsaccuracysensitivityprobabilistic methodsrandom scatterserial fitnessparametric reliabilitygradual failures
Publication based on the results of:
In book
Tomsk: Tomsk State University of Control Systems and Radioelectronics (TUSUR), 2019.
Kibkalo Vladislav, Chertopolokhov V., Mukhamedov A. et al., IEEE Access 2026 Vol. 14 P. 14369–14392
This study presents on-the-fly identification and multi-step prediction of nonlinear systems with delayed inputs using a dynamic neural network combined with a smooth projection onto ellipsoids. The projection enforces parameter constraints that guarantee stability, while a Lyapunov–Krasovskii analysis yields computable ultimate error bounds. Riccati-type matrix inequalities are derived, providing an efficient vectorization–projection–devectorization implementation suitable for ...
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Shishkina E., Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria 2025
This article investigates the problem of approximating the generalized
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convergence rate of the proposed method is proven, and its stability is
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Kuninets A., Malygina E., , in: 2025 XIХ International Symposium on Problems of Redundancy in Information and Control Systems (Redundancy), 5-7 Nov. 2025.: IEEE, 2025. P. 1–5.
This paper presents explicit constructions of bases for Riemann-Roch spaces associated with arbitrary divisors on elliptic curves. In the context of algebraic geometry codes, the knowledge of an explicit basis for arbitrary divisors is especially valuable, as it enables efficient code construction. From a cryptographic point of view, codes associated with arbitrary divisors with many ...
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Posnenkova O., Simonyan M., Akimova N., Blood Pressure Monitoring 2025 No. 11
We aimed to evaluate the accuracy of B.Well PRO-33 (B.Well, Widnau, Switzerland) oscillometric device for professional office measurement of blood pressure (BP) on the upper arm in the general population in accordance with the Amendment 2.2024-01 of the Standard 81060-2:2018 by the International Organization for Standardization (ISO 81060-2:2018/AMD 2:2024). Study participants were recruited according to ...
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Mironova P., Меркулова А. А., Фольклор и антропология города, Российская Федерация 2025 Т. 7 № 3 С. 74–95
Traditionally, Delhi’s markets are oversaturated spaces for sensory perception: a cacophony of sounds, contrasting smells, and a vivid visual cascade. This study adopts a sensitive ethnographic lens to examine how bodily sensations relate to sociality, of- fering insight into the social order of the marketplace and an individual’s position within it. What markers evoke comfort ...
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Dalian: IEEE, 2025.
The increasing complexity of modern software development necessitates intelligent, automated security analysis frameworks that can effectively pay attention of human on high-risk software releases. This paper introduces a Multi Agent System (MAS) framework designed to enhance the security assessment process by leveraging artificial intelligence (AI) and intelligent computing for real-time release analysis. The proposed system ...
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Perfluorosulfonic acid polymer membrane with increased chemical stability for hydrogen-air fuel cell
Safronova E. Y., A. O. Bedarkova, Novikova S. et al., Polymer Degradation and Stability 2025 Vol. 240 Article 111477
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Котельников А. В., Laboratorium. Журнал социальных исследований (США) 2024 Т. 16 № 2 С. 4–23
The article presents an ethnographic study of the commune Dom (Home), one of about a dozen currently existing communes (“homes”) in Saint Petersburg, Russia, based on cohabitation and management of common household by people who are not related to each other, in large apartments (once communal apartments or dormitories). The residents of the Dom postulate ...
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Буланова И. С., Dvoinin A., Двойнина В. К., Современная зарубежная психология 2025 Т. 14 № 1 С. 103–113
Recently, the concept of resilience has become very popular in psychological science, which in Russian-language psychology is translated as “zhiznesposobnost” [“viability”] or “ustoichivost” [“stability”]. Despite the fact that this concept has firmly entered the conceptual framework of psychological science, there is still no consensus among researchers on its definition and theoretical load. In the scientific ...
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Lysova A. A., Ponomarev I. I., Yaroslavtsev A. B., Solid State Ionics 2024 Vol. 414 Article 116644
Polybenzimidazoles (PBI) doped with phosphoric acid are a promising electrolyte for medium-temperature fuel cells. However, to be effective at high temperatures in the presence of acid, the mechanical and conductive properties of the material must be stable and no critical increase in gas permeability is required. This work proposes an approach to improve the properties ...
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Mikhail V. Meshcheryakov, Nina I. Zhukova, Regular and Chaotic Dynamics 2025 Vol. 30 No. 1 P. 141–154
Continuous actions of topological semigroups on products $X$ of an arbitrary family of topological spaces $X_i$, $i\in J,$ are studied. The relationship between the dynamical properties of semigroups acting on the factors $X_i$ and the same properties of the product of semigroups on the product of these spaces is investigated. We consider the following dynamical properties: ...
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Sergeev A., Minchenkov V., Солдатов А. В., / Series Computer Science "arxiv.org". 2024. No. 2401.10777.
Systems of intelligent control of manual operations in industrial production are being implemented in many industries nowadays. Such systems use high-resolution cameras and computer vision algorithms to automatically track the operator's manipulations and prevent technological errors in the assembly process. At the same time compliance with safety regulations in the workspace is monitored. As a ...
Added: September 4, 2024
Balakin S., Панасик Д. С., Федоров В. И., Космическая техника и технологии 2023 Т. 2(41) № 2 С. 22–31
The paper presents operating principles of the path for controlling the ratio
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Zhukova N., Regular and Chaotic Dynamics 2024 Vol. 29 No. 1 P. 174–189
The focus of the work is the investigation of chaos and closely related dynamic properties of continuous actions of almost open semigroups and $C$-semigroups. The class of dynamical systems $(S, X)$ defined such semigroups $S$ is denoted by $\frak A.$ These semigroups contain, in particular, cascades, semiflows and groups of homeomorphisms. We extend the Devaney ...
Added: February 11, 2024
Shanskov M., Мельников Д. С., Фокин А. М., Вестник Томского государственного университета 2023 № 494 С. 163–171
In sports games, along with the improvement of motor skills, athletes develop tactical thinking skills – a specialized form of mental activity. This is due to the fact that the absence of standard programs of motor activity in games requires special attention to its current conditions. Therefore, in these sports, the main form of brain ...
Added: February 10, 2024
Бурков А. А., Tyurlikov A., Информационно-управляющие системы 2022 Vol. 5 P. 49–59
Introduction: Internet of Things devices are actively used within the framework of Massive Machine-Type Communication scenarios. The interaction of devices is carried out by random multiple-access algorithms with limited throughput. To improve throughput one can use orthogonal preambles in the ALOHA-type class of algorithms. Purpose: To analyze ALOHA-based algorithms using the exploration phase and to calculate the characteristics ...
Added: September 26, 2023
Brodetskiy G., Gerami V., Gusev D. et al., Анализ и прогноз. Журнал ИМЭМО РАН 2023 № 2 С. 14–23
The article is devoted to the process of transformation of international supply chains in a crisis situation caused by the imposition of three powerful negative factors: the financial and economic crisis of 2008, the consequences of the COVID-19 pandemic and economic sanctions against the Russian Federation.
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Karabekyan D., Журнал Новой экономической ассоциации 2022 № 5(57) С. 24–37
Some distortions are possible in the process of preference aggregation. For example, one voter who is pivotal for some preference profi le may not read instructions properly and accidently submit wrong preference. We study how different voting rules react to these distortions for three, four and fi ve alternatives with computer modelling. One of the ...
Added: January 17, 2023
M. V. Pomazanov, , in: 9th International Conference on Information Technology and Quantitative ManagementIssue 214.: Elsevier, 2022. P. 565–572.
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