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2023 International Russian Automation Conference, RusAutoCon 2023

作者： Gaiduk, Anatoly Prokopenko, Nikolay Chumakov, Vladislav Southern Federal University Scientific Design Office Robotics and Control Systems Taganrog Dept. of Automatic Control Systems Rostov-on-Don Russia Don State Technical University Dept. of Scientific Research Dept. of Information Systems and Radio Engineering Rostov-on-Don Russia

ISBN: (纸本)9798350345551

To design linear control systems a new method is suggested on the basis of the principle of output and impacts control. The main difference of this principle consists in the use of only measurable variables and separate operators for each input signal of the control device. The design problem has a solution if the plant is completely controllable, and at least the controllable variable is measured. The suggested approach makes it possible to eliminate the well-known contradiction between the accuracy and stability of systems with control on deviation, and to provide the required astatism orders or selective invariance to the external actions. At the same time, the conditions of ensuring the direct indicators of the transient quality and the physical implementation of the control device are taken into account. The coefficients of the equation of the output and impacts control device are determined by solving a system of linear algebraic equations. The control device can be implemented on the basis of either operational amplifiers or sufficiently high-speed digital automation tools. The suggested method can be applied for designing high-quality linear control systems for various purposes. © 2023 IEEE.

关键词： Operational amplifiers

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Averaged Models and Analysis of a Three-Phase CSI as a Dual of a Three-Phase VSI 25

Averaged Models and Analysis of a Three-Phase CSI as a Dual ...

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25th IEEE International Conference on Industrial Technology, ICIT 2024

作者： Pujol, Pau Boira Dòria-Cerezo, Arnau Griñó, Robert Universitat Politècnica De Catalunya Barcelona Spain Ioc Universitat Politècnica De Catalunya Dept. Electrical Engineering Barcelona Spain Ioc Universitat Politècnica De Catalunya Dept. Automatic Control Barcelona Spain

ISBN: (纸本)9798350340266

The averaged model of a current source inverter (CSI) as a voltage source inverter (VSI) dual is presented in this paper. The differential equations defining the CSI are in-troduced in matrix representation for phase-to-phase and phase-to-neutral voltages and expressed using the Clarke and Park transformations. This multiple-input, multiple-output system is studied through the transfer function matrix of the linearized model, and the results are related to original CSI dynamics. Finally, open-loop simulations using Matlab/Simulink and realtime Typhoon-HIL have been carried out to validate the models. © 2024 IEEE.

关键词： Simulink

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Assessment of the Reliability of the Model of an Unmanned Underwater Vehicle

Assessment of the Reliability of the Model of an Unmanned Un...

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2022 Conference of Russian Young Researchers in Electrical and Electronic engineering, ElConRus 2022

作者： Neuimin, German A. Sakovich, Sergey Yu. Galtsov, German A. Saint Petersburg State Marine Technical University Smtu Dept. of Automatic Control Systems and On-Board Computing Saint Petersburg Russia

ISBN: (纸本)9781665409933

关键词： Submersibles

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Selecting an Operating System for an Industrial Board Installed in an Uninhabited Underwater Vehicle

Selecting an Operating System for an Industrial Board Instal...

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2022 Conference of Russian Young Researchers in Electrical and Electronic engineering, ElConRus 2022

作者： Kuznetsov, Evgeny S. Yu. Sakovich, Sergey Galtsov, Herman A. Saint Petersburg State Marine Technical University Smtu Dept. of Automatic Control Systems and On-Board Computing Saint Petersburg Russia

ISBN: (纸本)9781665409933

The article describes the steps for choosing the optimal operating system for specific hardware characteristics of an industrial motherboard for an uninhabited underwater vehicle using a virtualization platform. A board suitable for the tasks of an uninhabited underwater vehicle was selected. Next, assessment of virtualization environments with the choice of the preferred one was carried out, with the help of which the operability of various operating systems is tested in order to choose the appropriate one. © 2022 IEEE.

关键词： Vehicles

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COMPARING WSN PERFORMANCE: TRADITIONAL VS. SDN APPROACH

UPB Scientific Bulletin, Series C: Electrical Engineering an...

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UPB Scientific Bulletin, Series C: Electrical engineering and Computer Science 2024年第4期86卷 81-94页

作者： Hamad, Diyar Jamal Yalda, Khirota Gorgees Okumus, Ibrahim Taner Tapus, Nicolae Faculty of Automatic Control and Computer Science University of Science and Technology POLITEHNICA Bucharest Soran Technical college Erbil Polytechnic University Erbil Iraq Computer Engineering Kahramanmaras Sutcu Imam University Kahramanmaras Turkey Dept. of Computer Science University of Science and Technology POLITEHNICA Bucharest Romania

The proliferation of Wireless Sensor Networks (WSN) in various applications has necessitated the exploration of network architectures that can ensure efficient, scalable, and reliable communication. This study presents a comparative performance evaluation of traditional networking paradigms and Software-Defined Networking (SDN)-based architectures within WSN. Utilizing the Floodlight SDN controller and Mininet-WiFi emulator, we conducted a series of experiments across three different network topologies, varying the number of hosts and access points. The performance metrics focused on are average latency, packet loss percentage, and throughput. The results demonstrate a considerable improvement in all measured parameters under the SDN-based environment compared to the traditional setup. Specifically, SDN environments consistently showcased lower latency, minimal packet loss, and higher throughput, with the most notable difference observed in smaller network configurations. The findings suggest that SDN, with its centralized control plane, can significantly enhance the performance of WSNs, particularly in scenarios demanding rapid scalability and dynamic traffic management. This study underscores the potential of SDN architectures in optimizing WSN operations and lays the groundwork for future research in this domain. © 2024, Politechnica University of Bucharest. All rights reserved.

关键词： Floodlighting

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Current-limiting control of interlinking converter to maintain power balance in hybrid microgrids

Current-limiting control of interlinking converter to mainta...

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2022 IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT-Europe 2022

作者： Skentzos, Panagiotis Konstantopoulos, George C. The University of Sheffield Dept. of Automatic Control and Systems Engineering Sheffield United Kingdom University of Patras Dept. of Electrical and Computer Engineering Patra Greece

ISBN: (数字)9781665480321

ISBN: (纸本)9781665480321

In this paper, a novel nonlinear current-limiting controller that maintains the desired power balance in a hybrid microgrid, is proposed for interlinking converters (ICs). The RMS value of the IC current is analytically proven to remain below a desired maximum value at all times using nonlinear ultimate boundedness theory, without limiting separately the d- and q-axis current components and without using adaptive saturation units, as done in conventional approaches. Furthermore, the stability of the closed loop system is investigated through root locus analysis for different values of the controller gain. Finally, the performance of the proposed control scheme is validated through detailed simulation results of an interlinking converter connected to both an AC and a DC subgrid. © 2022 IEEE.

关键词： controllers

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Switched-Capacitor Low-Pass Filter with Pole Frequency Tuning at Constant Frequency of Switching 16

Switched-Capacitor Low-Pass Filter with Pole Frequency Tunin...

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16th IEEE International Scientific and Technical Conference Actual Problems of Electronic Instrument engineering, APEIE 2023

作者： Denisenko, Darya Y. Titov, Alexey E. Alferova, Irina A. Kuznetsov, Dmitry V. Dept. of Scientific Research Don State Technical University Dept. of Automatic Control Systems Southern Federal University Rostov-on-Don Russia Dept. of Automatic Control Systems Southern Federal University Rostov-on-Don Russia Dept. of Scientific Research Dept. of Cyber Security of Information Systems Don State Technical University Rostov-on-Don Russia Dept. of Information Systems and Radio Engineering Don State Technical University Rostov-on-Don Russia

ISBN: (纸本)9798350330885

The circuitry of a switched-capacitor low-pass filter (SCF) is considered, in which it is possible to tune the pole frequency without changing the capacitances of the switched capacitors, for example, by selecting them of the same kind. To study the suggested SCF circuit, the analysis in the time domain was used, and the obtained characteristics of the SCF were further compared with the characteristics of a generalized second-order analog filter. It is shown that the parameters implemented by the suggested filter depend not only on the capacitance values of the switched capacitors, but also on the ratio of the resistances of two additional resistors. Moreover, the SCF pole frequency is determined by the switching frequency of the keys, the ratios of the capacitances of the switched capacitors, as well as the ratio of the resistances of additional resistors. Due to the goal-oriented selection of the resistances of these resistors, it is possible to lower the SCF pole frequency at constant and identical values of the capacitances of the switched capacitors. © 2023 IEEE.

关键词： Resistors

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Design and performance analysis of tetrafurcated optical fiber displacement sensors for enhanced range and linearity 11

Design and performance analysis of tetrafurcated optical fib...

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Photonic Instrumentation engineering XI 2024

作者： Zubia, Gorka Zubia, Joseba Durana, Gaizka Aldabaldetreku, Gotzon Amorebieta, Josu Dept. of Automatic Control and Systems Engineering University of the Basque Country Plaza Ingeniero Torres Quevedo 1 Bilbao48013 Spain Dept. of Communications Engineering University of the Basque Country Plaza Ingeniero Torres Quevedo 1 Bilbao48013 Spain Dept. of Applied Mathematics University of the Basque Country Plaza Ingeniero Torres Quevedo 1 Bilbao48013 Spain

ISBN: (纸本)9781510670464

Optical fiber displacement sensors (OFDS) offer several advantages over conventional sensors due to their compact size and immunity to electromagnetic interference. These are particularly useful for applications in confined spaces, including aeronautical turbines. The critical component of OFDS is the fiber bundle, whose response depends on the arrangement, radius, and number of fibers. We developed a straightforward yet effective method for designing OFDSs based on sensor specifications: working point, range, and sensitivity. This allows to determine the bundle geometry directly from the specified requirements. Among the explored designs, the tetrafurcated bundle stands out, composed by a transmitting fiber at the center, surrounded by three collections of receiving fibers. This paper demonstrates that tetrafurcated OFDS designs significantly enhance both the range and linearity. Additionally, they effectively reduce the dead zone of the sensors, enabling precise measurements even at very short distances. The design has been manufactured and experimentally validated. Simulation and measurements are in good agreement with an MSE of 0.26%. Our findings highlight the practicality and reliability of tetrafurcated OFDS designs, opening new possibilities for advanced displacement sensing applications. © 2024 SPIE.

关键词： Optical fibers

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Analysis of the zero dynamics of three-phase current source inverters using a complex-valued approach 32

Analysis of the zero dynamics of three-phase current source ...

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32nd IEEE International Symposium on Industrial Electronics, ISIE 2023

作者： Rahimi, Leila Dòria-Cerezo, Arnau Griñó, Robert Inst. of Ind. and Control Engineering Universitat Politècnica de Catalunya Barcelona Spain Universitat Politècnica de Catalunya Inst. of Industrial and Control Eng. Dept. of Electrical Engineering Barcelona Spain Universitat Politècnica de Catalunya Inst. of Industrial and Control Eng. Dept. of Automatic Control Barcelona Spain

ISBN: (纸本)9798350399714

This paper analyzes the zero dynamics of three-phase current source inverters fed from a voltage source and connected to a local resistive load or the electrical power grid. The zero dynamics is the remaining dynamics of a system when it exactly meets the control objectives. It is important for understanding the system behaviour, and its limitations, and designing efficacious controllers. The analysis concludes that, when the power source is modelled from its Thévenin equivalent circuit, some stability problems occur in the dc link if the control scheme only tracks the output voltage. The paper includes an alternative nested-loop controller that overcomes the internal dc-current instability. © 2023 IEEE.

关键词： Equivalent circuits

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High-Speed CBJT Operational Amplifier Based on 'Folded' Cascode with a Differentiating Transient Correction Circuit

High-Speed CBJT Operational Amplifier Based on 'Folded' Casc...

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2024 Wave Electronics and its Application in Information and Telecommunication Systems, WECONF 2024

作者： Titov, A.E. Kuznetsov, D.V. Denisenko, D.Y. Alferova, I.A. Southern Federal University Dept. Of Automatic Control Systems Rostov-on-Don Russia Don State Technical University Dept. Of Scientific Research Dept. Of Information Systems And Radio Engineering Rostov-on-Don Russia Don State Technical University Dept. Of Scientific Research Rostov-on-Don Russia Don State Technical University Dept. Of Scientific Research Dept. Of Cyber Security Of Information Systems Rostov-on-Don Russia

ISBN: (纸本)9798350364989

A circuit design of a high-speed CBJT operational amplifier (OpAmp) based on an 'folded' cascode is proposed, in which a differentiating transient correction circuit is introduced to increase the maximum slew rate of the output voltage (SR). The considered OpAmp is intended for use in a subclass of so-called discrete-to-analog SC filters on switched capacitors, where (in some important cases) higher SR values of the OpAmp are required. In addition, such high-speed OpAmps are in demand in drivers of high-speed analog-to-digital converters and other devices of automatics and computer engineering. Computer simulation in LTSpice environment shows that the proposed CBJT OpAmp circuit designs for micron silicon technological processes provide SR increase from 45.8 V/µs to 18000 V/µs. © 2024 IEEE.

关键词： Operational amplifiers

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