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2023 applied Mathematics, Computational Science and Mechanics: Current Problems, AMCSM 2023

作者： Lyasheva, Maya Lyasheva, Stella Shleymovich, Mikhail Kazan National Research Technical University Named after A.N. Tupolev-KAI Department for Automated Systems for Information Processing and Control Kazan Russia Kazan National Research Technical University Named after A.N. Tupolev-KAI Department for Applied Mathematics and Informatics Kazan Russia

ISBN: (纸本)9798350348576

Many modern information processing and control systems are based on computer vision technologies. In such systems, a number of tasks are solved, including the task of primary image processing. The primary processing is designed to transform the geometric, brightness and color characteristics of images, ensuring that they are brought to the best possible appearance for further analysis. Brightness conversion must be performed to implement image enhancement and restoration procedures. Threshold wavelet filtering is the basis of one of the frequently used approaches for solving these problems. To build the appropriate procedures in this article, it is proposed to use a weight model of the image. This model allows us to obtain estimates of the significance of the contribution of pixels to the total energy of the analyzed image. © 2023 IEEE.

关键词： Wavelet transforms

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Ontological Decision Support Model for Cargo Port Risk Management

Ontological Decision Support Model for Cargo Port Risk Manag...

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Information, control, and Communication Technologies (ICCT), International Conference on

作者： Irina Bondareva Oleg Protalinskiy Anna Khanova Evgeniya Nesterova Anastasiya Belova Department of Applied informatics Astrakhan State Technical University Astrakhan Russia Department of Automated control systems of thermal processes Moscow Power Engineering Institute Moscow Russia

Modern unstable conditions of the market environment dictate the need for transport logistics enterprises to predict possible risk situations in order to prevent them, as well as to develop tools that allow forming management decisions, evaluating the effectiveness of each of them and choosing the most appropriate one, taking into account specific tasks and various influencing factors. As risks, situations of failure to achieve the goals of the cargo port, as well as failure to achieve standard values by the indicators for assessing these goals are considered. Goals and indicators are indicated in the constructed balanced scorecard (BSC). A set of links between goals and indicators for their assessment with risks at various levels of management is presented in the form of a developed multi-level hybrid logical-probabilistic (LP) risk model of the cargo port, as well as in detailed scenario models of this LP model. The ontological model contains all the information about the interaction of elements that affect the onset of risky events, and allows you to select options for exiting a risky situation in accordance with various specified conditions. The simulation model allows, based on the results of requests to the ontological model and the scenarios of simulation experiments developed on their basis, to develop a management decision that allows avoiding risky situations in the longer term, taking into account all available stochastic characteristics and factors of influence.

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Building the Ontology of Cognitive Functions 22

Building the Ontology of Cognitive Functions

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22nd IEEE International Conference of Young Professionals in Electron Devices and Materials, EDM 2021

作者： Murtazina, Marina Avdeenko, Tatiana Pustovalova, Alexandra Novosibirsk State Technical University Automated Control Systems Department Novosibirsk Russia Novosibirsk State Technical University Theoretical and Applied Informatics Department Novosibirsk Russia

ISBN: (纸本)9781665414982

The paper investigates the possibilities of using the ontological approach in neurocognitive science and presents the results of building an ontology of cognitive functions. The developed ontology is intended for the accumulation of interdisciplinary knowledge necessary for the study of cognitive functions through which the process of rational knowledge of the world is carried out. The paper proposes a conceptual structure for understanding the relationship between patterns of brain activity and human cognitive abilities. The ontology was implemented using the Protégé 5.2. The ontology accumulates knowledge about cognitive functions and methods of their assessment using neuropsychological tests and EEG methods. A distinctive feature of the proposed ontology from existing ones is the inclusion of concepts that reflect the terminology used in the study of cognitive functions from the standpoint of analyzing psychometric and neurophysiological data, as well as knowledge about combinations of electrodes and features that can be used in machine learning from EEG data to identify patterns of brain activity. © 2021 IEEE.

关键词： Ontology

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Reliability Assessment of LCC-HVDC links Using Protection Devices 1

Reliability Assessment of LCC-HVDC links Using Protection De...

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1st International Conference on Renewable Solutions for Ecosystems: Towards a Sustainable Energy Transition, ICRSEtoSET 2023

作者： Hameurlaine, Abdelhadi Boukezzi, Larbi Karef, Salah Sayah, Haouari University of Djelfa Laboratory of Applied Automation & Industrial Diagnostics Djelfa Algeria University of Djelfa Materials Science and Informatics Laboratory Msil Djelfa Algeria University of Djelfa Com Laboratory of Modeling Optimization and Simulation of Real Complex Systems Djelfa Algeria University of SidiBel-Abbes Intelligent Control and Electrical Power System Laboratory SidiBel-Abbes Algeria

ISBN: (纸本)9798350346336

the DC/AC interaction and the presence of the high nonlinearity in the HVDC links, these problems needs to examine the behavior of the system in steady-state and transient conditions in order to define the great role of protection functions and control parameters. Furthermore, control and protection systems are a vital part of an HVDC system to guarantee the safety, reliability, and stability of its operation. This research aim is to provide the solutions for control and protection problems that can occur in HVDC link. In this paper, we study how we mitigate this serious malfunction of commutation failure process in the operation of HVDC converters. Indeed some protection functions like the commutation failure prevention. Furthermore, HVDC transmission systems are vulnerable to DC faults and its protection becomes ever more important with the fast growth in the number of installations. Finally, the dynamics of the studied power system including the HVDC link is thoroughly investigated through various simulation scenarios. © 2023 IEEE.

关键词： HVDC power transmission

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QuITO v.2: Trajectory Optimization with Uniform Error Guarantees under Path Constraints

arXiv

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arXiv 2024年

作者： Ganguly, Siddhartha D’Silva, Rihan Aaron Chatterjee, Debasish Systems and Control Engineering Indian Institute of Technology Mumbai400076 India Applied Mathematics and Physics Graduate School of Informatics Kyoto University Japan Department of Aerospace Engineering University of Illinois at Urbana-Champaign United States

This article introduces a new transcription, change point localization, and mesh refinement scheme for direct optimization-based solutions and for uniform approximation of optimal control trajectories associated with a class of nonlinear constrained optimal control problems (OCPs). The base transcription algorithm for which we establish the refinement algorithm is a direct multiple shooting technique — QuITO v.2 (Quasi-Interpolation based Trajectory Optimization). The mesh refinement technique consists of two steps — localization of certain irregular regions in an optimal control trajectory via wavelets, followed by a targeted ℎ-refinement approach around such regions of irregularity. Theoretical approximation guarantees on uniform grids are presented for optimal controls with certain regularity properties along with guarantees of localization of change points by wavelet transform. Numerical illustrations are provided for control profiles involving discontinuities to show the effectiveness of the localization and refinement strategy. We also announce, and make freely available, a new software package based on QuITO v.2 along with all its functionalities for completeness. The package is available at: https://***/chatterjee-d/***. Copyright © 2024, The Authors. All rights reserved.

关键词： Mesh generation

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From Model Predictive control to Data Driven control to Meet High Efficiency Objective of a PMSM Drive System

From Model Predictive Control to Data Driven Control to Meet...

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International Conference on applied and Theoretical Electricity (ICATE)

作者： Madalin Costin Ion Bivol Dept. of Electrical Engineering and Energy Conversion Systems “Dunarea de Jos” University of Galati Galati Romania Dept. of Automatic Control and Applied Informatics “Gheorghe Asachi” Technical University of Iasi Iasi Romania

ISBN: (数字)9798350388107

ISBN: (纸本)9798350388114

In this paper is proposed a Data Driven control (DDC) law of a Permanent Magnet Synchronous Machine (PMSM) drive as an alternative to the Model Predictive control (MPC) strategy. The DDC method is designed for the inner control structure of the PMSM drive, the outer speed loop being employed by a classical linear PI controller. Thus, the DDC is based on build up a database of the relevant quantities as electromagnetic torque, speed, voltages and current, all obtained in steady - state regime with MPC strategy, being selected for the highest efficiency values for a given pair of speed and torque. The learning process of the DDC strategy by a mutidimesional interpolation method leads to obtain high performances in both steady - state and dynamic regimes, without any additional optimal current reference command. A comparative analysis done in Matlab simulation environment of the results obtained by both MPC and DDC control laws shows the effectiveness of the last strategies. The DDC method provide a robust optimal control under energetic constraints, being more suitable then the classical MPC law that can not offers reliable results for a large area of conditions in practice.

关键词： Permanent magnet machines Interpolation Torque Stator windings Prediction algorithms Permanent magnets Temperature control Steady-state Reliability Predictive control

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Digital twin of the management process of field service teams of an electric grid company 10

Digital twin of the management process of field service team...

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10th International Conference on Mathematical Modeling in Physical Sciences, IC-MSQUARE 2021

作者： Kinzhalieva, A.R. Protalinskiy, O.M. Khanova, A.A. Bondareva, I.O. Department of Applied informatics Astrakhan State Technical University Astrakhan Russia Department of Automated Control Systems of Thermal Processes Moscow Power Engineering Institute Moscow Russia

Modern electric grid companies are focused on minimum economically feasible costs and are aimed at improving the efficiency of financial and economic activities through the rational use of resources. The digital twin structure is proposed for the management of field service teams in the event of accidents and technological failures in an electric grid company. The digital twin includes an agent model, a system dynamics model, a geographic information system component, and modules with experiments. The description of the simulation model of management of field service teams in the event of accidents and technological failures is formalized, the input and output information on the model components is highlighted, the information is structured, and the scheme of the system dynamics model is created. Experiment designs for the digital twin of the management of field service teams in the event of accidents and technological failures in order to determine the best reliability and cost indicators are developed. The developed approach can be used to create digital twins of the management process of field service teams in the event of accidents and technological failures for various electric grid companies by selecting the parameters of simulation models according to the statistical reports by electric grid companies and connecting the appropriate GIS modules. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Human resource management

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Investing Funds Decision Making 5

Investing Funds Decision Making

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5th International Conference on control systems, Mathematical Modeling, Automation and Energy Efficiency, SUMMA 2023

作者： Malafeyev, Oleg Redinskikh, Nadezhda Zaitseva, Irina Bondar, Victoria Skvortsova, Olga Martynovskaya, Alexandra Saint-Petersburg State University Department of Modelling in Social and Economical Systems St. Petersburg Russia Saint-Petersburg State University Faculty of Applied Mathematics and Control Processes St. Petersburg Russia Russian State Hydrometeorological University Department of Higher Mathematics and Physics St. Petersburg Russia Algebra and Geometry North Caucasus Federal University Department of Mathematical Analysis Stavropol Russia North Caucasus Federal University Department of Applied Informatics Stavropol Russia

ISBN: (纸本)9798350309126

In this paper the process of investing funds by group of investors in the products production in certain region to meet public needs is considered. When making decision on investing funds, group of investors expects to maximize profit from the investments. The considering region also receives some benefits. In the paper formalized and studied predictive assessment of the planned investment effectiveness for investors group (personal effectiveness) and an assessment of the effectiveness of this investment for region as a whole. © 2023 IEEE.

关键词： Investments

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A Hybrid Adaptive Filter for Head Tracking in Augmented Reality (AR)-based Flight Simulators

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IEEE Transactions on Computers 2025年

作者： Nwobodo, Onyeka J. Kuaban, Godlove Suila Nkemeni, Valery Wereszczynski, Kamil Cyran, Krzysztof A. Silesian University of Technology Department of Computer Graphics Vision and Digital Systems Faculty of Automatic Control Electronics and Computer Science Gliwice Poland Polish Academy of Sciences Institute of Theoretical and Applied Informatics Poland University of Buea Laboratory of Electrical Engineering and Computing Faculty of Engineering and Technology Buea Cameroon

This paper presents a novel approach for head tracking in augmented reality (AR) flight simulators using an adaptive fusion of Kalman and particle filters. This fusion dynamically balances the strengths of both algorithms, leveraging Kalman filters for computational efficiency and particle filters for handling non-linearities based on real-time factors such as sensor noise and head movement patterns. Our method demonstrates superior tracking precision and reduced latency, making it particularly effective for immersive pilot training in AR-based flight simulations. While focused on flight simulation, our approach holds high potential for broader applications in other AR and virtual reality (VR) environments where precise, real-time head tracking is crucial. These results provide actionable design guidance for developers optimizing tracking systems in environments that require fast response times and high accuracy. Future extensions of this research could explore the generalization of our approach across diverse AR applications, including human-computer interaction (HCI), medical simulations, and gaming. © 1968-2012 IEEE.

关键词： Flight simulators

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Automatic Car License Plate Detection Based on the Image Weight Model

Automatic Car License Plate Detection Based on the Image Wei...

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

作者： Gizatullin, Zinnur M. Lyasheva, Maya M. Shleymovich, Mikhail P. Lyasheva, Stella A. Kazan National Research Technical University Named after A.N. Tupolev-KAI Department for Automated Systems for Information Processing and Control Kazan Russia Kazan National Research Technical University Named after A.N. Tupolev-KAI Department for Applied Mathematics and Informatics Kazan Russia

ISBN: (纸本)9781665409933

Methods of detecting car license plates in images are considered. A method for detecting a car license plate based on a weight model that reflects the importance of pixels for determining image features is described. A scheme for constructing a model using a multiple-scale wavelet transform is presented. It is shown that the model can be represented as a grayscale image - a weight image. A method is proposed for selecting contours on a weighted image using the operation of calculating the morphological gradient and analyzing them for compliance with the parameters of the quadrangular area of the car license plate using the contour length, the area of the inner area and the difference between the area of the inner area and the area of the smallest bounding quadrilateral. It is shown that the described method provides fast and accurate detection of the car number in the image. © 2022 IEEE.

关键词： Computer vision

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