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23rd IEEE International Conference of Young Professionals in Electron Devices and Materials, EDM 2022

作者： Garder, Aleksey V. Shornikov, Yury V. Novosibirsk State Technical University Faculty of Automation and Computer Engineering Novosibirsk Russia Novosibirsk State Technical University Institute of Automation and Electrometry of the Siberian Branch of the Russian Academy of Sciences Faculty of Automation and Computer Engineering Novosibirsk Russia

ISBN: (纸本)9781665498043

The numerical analysis of complex event-continuous processes represented by the class of Cauchy problems with constraints on an event function is considered. The processes are specified in the developed unique textual-graphical language LISMA using Harel statecharts. The program models are edited, numerically analyzed, and their results are processed in the computer-aided analysis environment ISMA. The numerical analysis is performed using a collection of traditional and developed original explicit numerical integration methods of variable order and step with extended stability domains and an original algorithm detecting unilateral events in hybrid systems. The efficiency of the original methods has been tested on typical examples of hybrid systems. The chosen visual specification of program models satisfies the representation semantics of discrete-continuous processes with complex operational mode switching logic. Moreover, such a specification is understandable to an end user, who is rather interested in analyzing complex dynamic processes using simple and comprehensible tools for composing and editing models and being able to change the model structure and parameters fast. © 2022 IEEE.

关键词： computer aided analysis

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Impact of distributed generation upon Reghin - Ləpuşna Medium Voltage line

Impact of distributed generation upon Reghin - Ləpuşna Med...

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2014 International Symposium on Fundamentals of Electrical engineering, ISFEE 2014

作者： Duləu, Lucian Ioan Abrudean, Mihail Bicə, Dorin Department of Automation Faculty of Automation and Computer Science Technical University of Cluj-Napoca Romania Department of Electrical and Computer Engineering Faculty of Engineering Petru Maior University of Tîrgu-Mureş Romania

ISBN: (纸本)9781479968213

The transition between the power market competition and these emerging renewable power system alternatives (wind turbines, solar plants, micro-turbine), has awaken a great deal of interest for distributed power generation. Distributed Generation comprise in low power generators (typically lower than 50 MW), installed within the area of the main power consumption to ensure the growth of the existent distribution network and to satisfy the consumer's needs. © 2014 IEEE.

关键词： Distributed power generation

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An Insight Into Communication Technologies Utilized in Smart Metering Systems 45

An Insight Into Communication Technologies Utilized in Smart...

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45th Jubilee International Convention on Information, Communication and Electronic Technology, MIPRO 2022

作者： Bacnar, David Leytner, Lolita Stojkovic, Nino Lerga, Jonatan University of Rijeka Faculty of Engineering Department of Computer Engineering Rijeka Croatia University of Rijeka Faculty of Engineering Department of Automation and Electronics Rijeka Croatia University of Angers Polytech Angers Automation and Computer Engineering Department Angers France

ISBN: (纸本)9789532331035

This paper presents an insight into the smart metering field. The paper address specifics of different network hierarchy structures (wide area networks, neighborhood area networks, and home area networks) and topologies used for this purpose (mesh, point-to-point, virtual point-to-point, or broadcast networks). Next, we focus on listing and describing some of the most commonly used communication technologies (both wired and wireless, such as power line communication, public switched telephone network, digital subscriber line, radiofrequency, in-home radio frequency, wireless local area network, or mobile network communications), their characteristics, advantages, and disadvantages utilized for remote and smart metering. © 2022 Croatian Society MIPRO.

关键词： Wide area networks

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Modification of the Prony Method for Pulse Signal Modeling 25

Modification of the Prony Method for Pulse Signal Modeling

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25th IEEE International Conference of Young Professionals in Electron Devices and Materials, EDM 2024

作者： Gavrilov, Alexey B. Bakulina, Arina I. Faculty of Automation and Computer Engineering Novosibirsk State Technical University Novosibirsk Russia

ISBN: (纸本)9798350389234

This paper considers a modification of the Prony parametric approximation method for modeling impulse signals. It is assumed that the experimentally measured signal is represented as a time series. The method is based on the construction of a model of the experimental signal under study as a sum of damped sinusoids. The problem, which does not allow approximating impulse signals with the required accuracy, is revealed. On the basis of the analysis of the classical formulation of the method, its modification is proposed, which allows to solve this problem. Mathematical substantiation of the modified method is presented. The possibility of interference filtering on the basis of analyzing the spectral structure of the signal model is substantiated. The possibility of identification of dynamic characteristics of elements of automatic control systems in analytical form using the developed approach is investigated. The results of modeling a test signal in the form of a rectangular pulse are given. The directions of development of the modified method are discussed, as well as possible areas of practical application. © 2024 IEEE.

关键词： Identification (control systems)

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Research and Development of Monitoring and Display Terminals for Digital Switchgears at Substation 25

Research and Development of Monitoring and Display Terminals...

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25th IEEE International Conference of Young Professionals in Electron Devices and Materials, EDM 2024

作者： Repin, Sergey E. Karpov, Igor D. Faculty of Automation and Computer Engineering Novosibirsk State Technical University Novosibirsk Russia

ISBN: (纸本)9798350389234

Medium voltage distribution equipment plays a key role in ensuring reliable operation of electrical systems. Given the rapid development of the electric power industry, new ways to increase the stability and efficiency of electric grids are emerging. In this regard, there is a need to improve the devices used in switchgears at substations. This article examines the creation of a device for monitoring and controlling electrical parameters at a substation using modern data transmission protocols. Among other things, the equipment of a modern substation, data transmission protocols and control and measuring devices are being studied. Attention is also paid to ensuring reliable data backup in the substation's information network using PRP. A structural and functional diagram of a device combining the functions of monitoring and displaying information, as well as analog data aggregation, is being developed. The article is aimed at creating a device for monitoring electrical parameters at a substation, taking into account the convenience of use and modern data transmission protocols such as IEC-60870-104 and IEC-61850, for data exchange in a SCADA system and with relay protection devices, as well as ensuring reliable data backup in the substation information network via PRP. © 2024 IEEE.

关键词： Relay protection

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PID Resonant Controller for Suppressing the Oscillations of an Elastic Suspension 16

PID Resonant Controller for Suppressing the Oscillations of ...

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16th International Conference on Stability and Oscillations of Nonlinear Control Systems (Pyatnitskiy's Conference), STAB 2022

作者： Yurkevich, Valeriy D. Tam, Bui Van Novosibirsk State Technical University Faculty of Automation and Computer Engineering Novosibirsk Russia

ISBN: (纸本)9781665465861

The method of PID resonance controller design, which provides asymptotic convergence to zero of the amplitude of suspension vibrations under the action of external harmonic perturbations, is proposed. It is shown that the application of the time-scale separation method makes it possible to calculate the parameters of the PID components independently of the calculation of the resonance components of the proposed controller. © 2022 IEEE.

关键词： Controllers

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Increasing the Spatial Resolution of Digital Holograms Based on the Fourier Transform

Increasing the Spatial Resolution of Digital Holograms Based...

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2022 IEEE International Multi-Conference on engineering, computer and Information Sciences, SIBIRCON 2022

作者： Guzhov, Vladimir I. Ilinykh, Sergey P. Novosibirsk State Technical University Faculty of Automation and Computer Engineering Novosibirsk Russia

ISBN: (纸本)9781665464802

The paper considers possible methods of increasing spatial resolution in digital holographic microscopy. A new original approach to increase the spatial resolution of digital holograms obtained in optical-electronic interference measuring systems is proposed. The approach is based on forming a "mosaic"consisting of a set of digital holograms with low spatial resolution. Image reconstruction of an object is obtained by Fourier transformation of such a synthesized digital hologram. A method for forming a digital hologram with high spatial resolution is shown by increasing the spatial resolution of a digital hologram with low spatial resolution by a factor of two horizontally. The optical scheme and design of a digital microscope that implements the proposed approach are shown. The results of practical application of the proposed approach are presented. It is shown that a synthesized digital hologram with high spatial resolution completely reconstructs an image of an object without diffraction limitations inherent in holograms with low spatial resolution. The number of digital holograms with low resolution required to form a digital hologram with high spatial resolution is determined as a product of scale factors in the horizontal and vertical directions. The proposed approach can be easily adapted to arbitrary values of scale coefficients of original holograms. © 2022 IEEE.

关键词： Holograms

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Dynamic Inversion- and Neural Network- based Five-stage Cascaded Control for Automatic Carrier Landing Subject to Multiple Disturbances and Uncertainties

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Journal of the Franklin Institute 2025年

作者： Mihai Lungu Mou Chen MohammadReza Ebrahimpour Hongzhen Guo University of Craiova Faculty of Electrical Engineering Craiova Romania Nanjing University of Aeronautics and Astronautics College of Automation Engineering Nanjing China Tarbiat Modares University Department of Electrical and Computer Engineering Tehran Iran College of Mechanical and Electronic Engineering Nanjing Forestry University Nanjing China

This work proposes a novel control scheme for automatic carrier landing to enhance the landing precision and improve both the tracking of the reference trajectory and the touchdown accuracy. First, the nonlinear dynamics of the carrier-based aircraft is written under a five-stage cascaded strict feedback form. Then, a robust automatic carrier landing system (ACLS) is proposed by employing a novel nonlinear dynamic inversion (NDI)-based control approach, disturbance observers (for estimating the airwake and wind type disturbances), radial basis function neural networks (RBFNNs) for the estimation of the parametric uncertainties, a block based on a recursive least squares algorithm (for the deck motion prediction), a deck motion compensation subsystem, a block for updating the aircraft reference trajectory, and first-order command filters (for computing the required reference signals). The NDI- and RBFNN- based automatic carrier landing system consists of a guidance subsystem, attitude control subsystems, an angular rates’ control subsystem, and an approach power compensation system. The stability properties of the disturbance observers, controllers, RBFNNs, and command filters are integrated into a Lyapunov-based analysis to prove the stability of the closed-loop control architecture. Finally, the effectiveness of the presented automatic carrier landing system is verified by means of comparative numerical simulations.

关键词： Automatic carrier landing system dynamic inversion neural network airwake uncertainty

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Small-Signal and Transient Stability Investigation of Inverter Grid Synchronization 27

Small-Signal and Transient Stability Investigation of Invert...

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27th International Conference on Circuits, Systems, Communications and computers, CSCC 2023

作者： Scholey, Alexander Jeinsch, Torsten University of Rostock Institute of Automation Faculty of Computer Science and Electrical Engineering Germany

ISBN: (纸本)9798350337594

Grid synchronisation is essential for grid following inverter control. Typically, a phase-locked loop (PLL) is used to perform the synchronisation, but it is known that the PLL can fail to synchronise with the grid in weak grid scenarios. Although there have been many studies on this topic which relate the grid impedance, the grid voltage and the PLL parameterisation to the grid synchronisation, comprehensive analyses are difficult due to the nonlinear nature of the underlying system. Therefore, the exact relationships remain unclear. This paper investigates the stability of PLL-based grid synchronisation for a grid-side inverter with LC-type output filter and RL-type grid impedance. An analytical steady-state solution is presented, which is used for linearization and evaluation of the small-signal stability. Additionally, the transient stability with consideration of nonlinearities is investigated and a condition for stability of the PLL-based grid synchronization in the transient case is derived. The results are validated by numerical simulations. © 2023 IEEE.

关键词： Stability

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Development of the Device for Human Hearing Assessment 25

Development of the Device for Human Hearing Assessment

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25th IEEE International Conference of Young Professionals in Electron Devices and Materials, EDM 2024

作者： Karavaev, Valentin V. Pavlov, Aleksandr V. Faculty of Automation and Computer Engineering Novosibirsk State Technical University Novosibirsk Russia

ISBN: (纸本)9798350389234

The article describes the main parameters by which modern audiometers make a diagnosis. The role of audiometry in preventing of hearing pathology development in patients is shown. The principle of pure-tone audiometry and the method for determining the type of hearing loss from the obtained audiograms are described. The advantages of pure-tone audiometry over whisper audiometry and other devices that detect hearing impairment, are considered. The possibility of introducing additional hearing abilities into audiometers, such as hearing thresholds, relative pitch and absolute pitch, is explained. The device measuring the listed abilities is described in terms of its operating modes and electronic components. The method used in the device for adjusting the intensity of a sound wave, when it is impossible to change the duty cycle of a rectangular signal, is presented. Possible improvements to the device are shown. Prerequisites have been made for the introduction of a new approach to studying human hearing abilities and establishing a hypothetical diagnosis. © 2024 IEEE.

关键词： Audiometers

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