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Modeling the Vibrations of an Annular Membrane with a Nonsteady General Boundary Condition

Russian Engineering research 2025年第1期45卷 92-96页

作者： Kostikov, Yu. A. Romanenkov, A.M. Moscow Aviation Institute Moscow Russia Federal Research Center "Computer Science and Control " Russian Academy of Sciences Moscow Russia

Abstract: The initial boundary value problem regarding vibrations of an annular membrane is considered. Nonsteady boundary conditions are specified, and there is no distributed load. This is a nonclassical formulation, since rigid attachment conditions at the edges are usually specified. By appropriate replacement of the function to be determined, the initial problem may be reduced to an inhomogeneous problem with trivial boundary conditions of general form. Application of the standard Fourier method then allows us to express the solution as a functional series based on linear combinations of Bessel functions of the first and second kinds. © Allerton Press, Inc. 2025.

关键词： Boundary value problems

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Solution of a One-Dimensional Parabolic Problem with a Nonlocal Boundary Condition

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Russian Engineering research 2025年第1期45卷 101-105页

作者： Danilina, I.A. Kostikov, Yu. A. Romanenkov, A.M. Moscow Aviation Institute Moscow Russia Federal Research Center "Computer Science and Control " Russian Academy of Sciences Moscow Russia

Abstract: For a one-dimensional boundary problem associated with a linear parabolic equation in the presence of a nonlocal spatial condition, necessary and sufficient conditions for the existence of a solution are established. Structural proof of the existence of a solution is presented. By means of Laguerre polynomials, a solution is explicitly constructed in the form of a functional series. © Allerton Press, Inc. 2025.

关键词： Boundary conditions

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Forced Resonant Damping Vibrations of a Viscoelastic Beam

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Russian Engineering research 2025年第1期45卷 88-91页

作者： Kostikov, Yu. A. Romanenkov, A.M. Skachkov, A.S. Moscow Aviation Institute Moscow Russia Federal Research Center "Computer Science and Control " Russian Academy of Sciences Moscow Russia

Abstract: The initial model boundary value problem regarding vibrations of a viscoelastic beam with damping of Voigt type is considered. A classical formulation of a mixed problem for a fifth-order linear partial differential equation is adopted. The equation includes a term with a mixed derivative: first-order with respect to the time and fourth-order with respect to the spatial variable. On the basis of integral assessment, the energy identity is established, and the presence of damping vibrations is qualitatively demonstrated. By Galerkin projection, an exact solution of this problem is obtained. An algorithm is determined for calculation of the exact solution as a functional series. An explicit resonant term is obtained in general form. © Allerton Press, Inc. 2025.

关键词： Maximum principle

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Motion of an Electrically Conducting Viscous Liquid at a Porous Wall with Liquid Injection

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Russian Engineering research 2025年第1期45卷 106-109页

作者： Vysk, N.D. Gurchenkov, A.A. Romanenkov, A.M. Moscow Aviation Institute Moscow Russia Federal Research Center "Computer Science and Control " Russian Academy of Sciences Moscow Russia

The motion of viscous electrically conducting incompressible liquid is investigated, in circumstances where the liquid rotates initially in a solid mass at constant speed together with a porous boundary wall (plate) until the instantaneous onset of longitudinal vibrations in the wall. The wall is at an arbitrary angle with respect to the axis of rotation. An unsteady flux is induced by the following factors: the longitudinal vibrations;injection (removal) of the liquid perpendicular to the surface of the porous wall;and a constant magnetic field perpendicular to the wall, which is also switched on instantaneously. Exact equations are derived for the velocity field and pressure field of the liquid. The magnetic field induced in the flux of electrically conducting liquid is determined. A hydrodynamic paradox is established on the basis of the results. © Allerton Press, Inc. 2025.

关键词： Magnetic fields

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Modeling the Growth of Household Savings with a Nonlocal Boundary Condition

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Russian Engineering research 2025年第1期45卷 97-100页

作者： Kostikov, Yu. A. Romanenkov, A.M. Parenkina, V.I. Moscow Aviation Institute Moscow Russia Federal Research Center "Computer Science and Control " Russian Academy of Sciences Moscow Russia

Abstract: A stochastic model of the growth of household (family) savings is considered. Conditions are identified such that there exists a solution to the mixed parabolic problem for the distribution density of households in terms of savings. Using Laguerre polynomials, a solution is constructed explicitly in the form of a functional series for an initial boundary value problem with a nonlocal boundary condition. An economic interpretation of this nonlocal condition is outlined. © Allerton Press, Inc. 2025.

关键词： Boundary value problems

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Fault-Tolerant Self-Timed Counters

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Russian Microelectronics 2024年第8期53卷 798-802页

作者： Zatsarinny, A.A. Stepchenkov, Yu. A. Diachenko, Yu. G. Khilko, D.V. Orlov, G.A. Diachenko, D. Yu. Institute of Informatics Problems Federal Research Center "Computer Science and Control" of Russian Academy of Sciences Moscow119333 Russia

Abstract: The article studies the fault-tolerant self-timed (ST) counter design problem. Combinational ST circuits have a higher fault tolerance in comparison with synchronous counterparts due to redundant information coding and mandatory acknowledgment of all initiated circuit cells’ switch completion. Sequential ST circuits, including counters, are more sensitive to soft errors because a soft error can change a state stored by their memory cells. For their fault-tolerant implementation, special circuitry methods, namely DICE and Quatro, are used. They are similar to the data processing channel duplication, but use transistor cross-connection in the circuit cells. This approach significantly reduces the likelihood of a change in the counter bit’s state due to a soft error. The article proposes DICE-type and Quatro-type ST counter cases, compares their features, and resumes recommendations for the fault-tolerant ST counter implementation. © Pleiades Publishing, Ltd. 2024.

关键词： Combinatorial circuits

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Data-driven output regulation control for constrained linear systems

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science China(Information sciences) 2025年第3期68卷 338-353页

作者： Chaoyu XIA Yi DONG Chaoli WANG Shengyuan XU Shanghai Research Institute for Intelligent Autonomous Systems Tongji University College of Electronic and Information Engineering Shanghai Research Institute for Intelligent Autonomous SystemsTongji University Department of Control Science and Engineering School of Optical-Electrical and Computer EngineeringUniversity of Shanghai for Science and Technology Department of Automation Nanjing University of Science and Technology

This study introduces a data-driven approach for state and output feedback control addressing the constrained output regulation problem in unknown linear discrete-time systems. Our method ensures effective tracking performance while satisfying the state and input constraints, even when system matrices are not available. We first establish a sufficient condition necessary for the existence of a solution pair to the regulator equation and propose a data-based approach to obtain the feedforward and feedback control gains for state feedback control using linear programming. Furthermore, we design a refined Luenberger observer to accurately estimate the system state, while keeping the estimation error within a predefined set. By combining output regulation theory, we develop an output feedback control strategy. The stability of the closed-loop system is rigorously proved to be asymptotically stable by further leveraging the concept of λ-contractive sets.

关键词： output regulation constrained system data-driven.

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Authentication and Verification in Human-Robot Cooperative Robotic Cells using Stereo Vision and Gesture control 6

Authentication and Verification in Human-Robot Cooperative R...

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6th IEEE International Conference on Image Processing, Applications and Systems, IPAS 2025

作者： Kovacs, Gabor Sziranyi, Tamas HUN-REN Institute for Computer Science and Control Machine Perception Research Laboratory Budapest Hungary

ISBN: (纸本)9798331506520

The integration of human-robot interaction (HRI) technologies with industrial automation has become increasingly essential for enhancing productivity and safety in manufacturing environments. In this paper, we propose a novel approach to address these challenges by using stereo vision and gesture control in cooperative robotic cells. Our system enables seamless authentication of operators and real-time verification of task execution, ensuring compliance with established protocols and safety *** features of our system include its gesture-based operation with gesture recognition algorithms, allowing operators to interact with robotic systems intuitively and efficiently. By leveraging stereo vision, our system accurately tracks the operators' movement within the workspace, facilitating precise task execution and object *** present a detailed description of our system architecture, experimental configuration, and real-world performance assessment. Our results demonstrate the effectiveness and feasibility of our approach in enhancing operational efficiency, ensuring quality, and improving the overall user experience in industrial automation. © 2025 IEEE.

关键词： Human robot interaction

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Self-Timed Counter Synthesis

Self-Timed Counter Synthesis

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2024 International Conference on Industrial Engineering, Applications and Manufacturing, ICIEAM 2024

作者： Diachenko, Yuri Stepchenkov, Yuri Khilko, Dmitri Institute Of Informatics Problems Federal Research Center 'Computer Science And Control' Moscow Russia

ISBN: (纸本)9798350395013

Self-timed (ST) circuits have higher reliability in comparison with synchronous counterparts and can serve as a promising circuitry basis for microelectronic control unit implementations for robotic complexes and production systems. However, designing ST circuits is more labor-intensive and non-trivial because of the need to adhere to strict signal generation discipline and build an additional indication subcircuit. The synthesis of combinational ST circuits is quite simply formalized by means of dualizing the logical function system obtained by a logic synthesizer and adding an indication subcircuit. However, when synthesizing ST units with memory, including ST counters, this approach leads to excessive hardware redundancy and, as a consequence, to the resulting solution's low level of performance and soft error tolerance. The article analyzes the circuitry basis for the optimal multi-bit ST counter implementation and proposes a method for synthesizing ST counters based on parameterized templates of the ST counter body and its environment, ensuring self-timed implementation, its full functional compliance with the original description, and close to optimal consumer characteristics. © 2024 IEEE.

关键词： Microelectronics

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Failure-Tolerant Self-Timed Circuits

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Russian Microelectronics 2023年第8期52卷 793-797页

作者： Zatsarinny, A.A. Stepchenkov, Yu. A. Diachenko, Yu. G. Rogdestvenski, Yu. V. Plekhanov, L.P. Institute of Informatics Problems Federal Research Center "Computer Science and Control" of Russian Academy of Sciences Moscow119333 Russia

Abstract: The article considers the problem of developing synchronous and self-timed (ST) circuits that are tolerant to failures. Redundant ST coding and two-phase discipline ensures that ST circuits are more tolerant to soft errors than synchronous counterparts. Duplicating ST channels instead of tripling reduces the failure-tolerant ST circuit’s hardware redundancy and retains its reliability in higher level compared to synchronous counterparts. © Pleiades Publishing, Ltd. 2023.

关键词： Timing circuits

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