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检索条件"任意字段=International Conference on Complex Systems: Control and Modeling Problems"

共 12202 条记录，以下是521-530 订阅

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Mathematical modeling of the Groundwater Level Regime for Substantiation of Resource-Saving Technological Parameters of Drained Lands Water Regulation 12

Mathematical Modeling of the Groundwater Level Regime for Su...

引用

12th IEEE international conference on Intelligent Data Acquisition and Advanced Computing systems: Technology and Applications, IDAACS 2023

作者： Kuzmych, Lyudmyla Voropai, Halyna Kuzmych, Stepan Institute of Water Problems and Land Reclamation Naas Kyiv03022 Ukraine National University of Water and Environmental Engineering Rivne33000 Ukraine

ISBN: (纸本)9798350358056

The mathematical model of the dynamics of the groundwater level in the area between the drains during the regulation of the pressure in the drains is developed. This model is proposed for the regulation of the water regime on drained lands in the conditions of the three-layer structure of the soil. In combination with a complex of agrotechnical measures, this will significantly increase the productivity of agriculture and provide an opportunity to obtain high and stable yields of agricultural crops. © 2023 IEEE.

关键词： aeration zone analysis filtering groundwater level humidification mode model root layer soil

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Development of a Digital Twin for control and Diagnostics of the Gas Transport Process 5

Development of a Digital Twin for Control and Diagnostics of...

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5th international conference on control in Technical systems, CTS 2023

作者： Korablev, Juri A. Saint-Petersburg Electrotechnical University 'LETI' Saint-Petersburg Russia

ISBN: (纸本)9798350304664

The 'digital twin' technology fits well into the ideology of building intelligent fault-tolerant control systems. The technology is based on the premise that for each system it is possible to create a representation in the form of two systems -physical and virtual, including all information about the physical system. In this case, a constant 'mirror image' occurs: the virtual system 'displays' the real one, and vice versa. The basis of the digital twin in this report is the SIMULINK model of a technical system, updated by data received from a real object. When modeling based on the SIMULINK model, the tasks of diagnostics and fault tolerance are solved in parallel with the operation of a real object. The results of solving these problems -fault diagnoses and parameters of reconfiguration / restructuring of regulators -are transferred from the virtual environment of the digital twin to the real object. Another important task solved within the framework of the 'digital twin' technology is forecasting. In the context of this work, we are talking about solving the problem of predicting the occurrence of faults. To predict the occurrence of malfunctions and, accordingly, early detection of potential equipment failure, it is necessary to calculate the degradation function of equipment characteristics in real time, determine and correct the residual life. As a result, there is a reserve of time for repair and maintenance work at a minimum cost and without downtime. © 2023 IEEE.

关键词： Fault tolerance

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Contribution to the Sensors Faults Diagnosis of a Variable Speed Wind Turbine: Multimodel Approach 11

Contribution to the Sensors Faults Diagnosis of a Variable S...

引用

11th IEEE international conference on systems and control, ICSC 2023

作者： Sayahi, Yosra Allouche, Moez Ghamgui, Mariem Moreau, Sandrine Mehdi, Driss Postal Box 1173 Sfax3038 Tunisia University of Poitiers Laboratory of Computer Science and Automatic Control for Systems France

ISBN: (纸本)9798350304886

This paper highlights the importance of using a Doubly-Fed Induction Generators (DFIG) in the wind industry due to their ability to adapting for all variations in wind speed, thus providing increased efficiency and reliability. However, like any machine, DFIG are not immune to dysfunctional problems and faults (sensor faults, actuator faults and system faults) which affect energy production. To remedy this problem, we develop a Fault Detection and Insolation (FDI) system for sensors fault diagnosis in wind turbine. This work specifically addresses the use of observer's bench to detect and locate faults, such as intermittent sensor faults, inter-coil short circuits, emphasizing a multi-model approach. We use the Dedicated Observer Structure (DOS) and the Generalized Observer Structure (GOS) to solve the complex challenge of multiple and simultaneous sensor fault. Simulation results are presented to assess the effectiveness of the proposed diagnostic methods. © 2023 IEEE.

关键词： Wind turbines

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High-Speed Accurate Robot control using Learned Forward Kinodynamics and Non-linear Least Squares Optimization

High-Speed Accurate Robot Control using Learned Forward Kino...

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IEEE/RSJ international conference on Intelligent Robots and systems (IROS)

作者： Atreya, Pranav Karnan, Haresh Sikand, Kavan Singh Xiao, Xuesu Rabiee, Sadegh Biswas, Joydeep Univ Texas Austin Dept Comp Sci Austin TX 78712 USA Univ Texas Austin Dept Mech Engn Austin TX 78712 USA

ISBN: (数字)9781665479271

ISBN: (纸本)9781665479271

Accurate control of robots at high speeds requires a control system that can take into account the kinodynamic interactions of the robot with the environment. Prior works on learning inverse kinodynamic (IKD) models of robots have shown success in capturing the complex kinodynamic effects. However, the types of control problems these approaches can be applied to are limited only to that of following pre-computed kinodynamically feasible trajectories. In this paper we present Optim-FKD, a new formulation for accurate, high-speed robot control that makes use of a learned forward kinodynamic (FKD) model and non-linear least squares optimization. Optim-FKD can be used for accurate, high speed control on any control task specifiable by a non-linear least squares objective. Optim-FKD can solve for control objectives such as path following and time-optimal control in real time, without needing access to pre-computed kinodynamically feasible trajectories. We empirically demonstrate these abilities of our approach through experiments on a scale one-tenth autonomous car. Our results show that Optim-FKD can follow desired trajectories more accurately and can find better solutions to optimal control problems than baseline approaches.

关键词： Inverse problems Robot control Velocity control Optimal control Real-time systems Hardware Trajectory

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Frequency-Voltage Dynamic modeling and control of Virtual Synchronous Generators Based Power System

Frequency-Voltage Dynamic Modeling and Control of Virtual Sy...

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international conference on Energy Engineering, ICEE 2023

作者： Li, Yan Wang, Decheng Zhang, Qun Du, Jian Wang, Qinshan Wang, Qiong Wang, Xin Li, Zesen Economic and Technological Research Institute State Grid Jiangsu Electric Power Co. Ltd. Nanjing210008 China

ISBN: (纸本)9789819771455

To improve the stability requirements of power systems with high renewable energy penetration, more and more converters adopt Virtual synchronous generator (VSG) control strategies. Especially, the independent islanded system with distributed power sources and large line impedance is prone to voltage quality and stability problems, which put higher requirements on the dynamic performance of converters. Therefore, this paper constructs a dynamic mathematical model of VSG in an isolated system considering the control dynamic of VSG and the interaction with the line impedance. The proposed model provides an analytical model basis for the dynamic performance improvement of VSG. The correctness of the proposed dynamic model of VSG is verified by dynamic simulation in MATLAB/Simulink. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Dynamic model Frequency control Virtual synchronous generator (VSG) Voltage control

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Design of a single-phase inverter control strategy with improved BP neural network 8

Design of a single-phase inverter control strategy with impr...

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8th international conference on Intelligent Computing and Signal Processing, ICSP 2023

作者： Shen, Mingnan Zhang, Fan Zhu, Wenzhang Shen, Yafeng Ma, Luyao Huang, Ke Xiamen University of Technology School of Opto-Electronic and Communication Engineering Xiamen China Xiamen Hualian Electronics Co. Ltd Xiamen China Xiamen University of Technology Xiamen China

ISBN: (纸本)9798350302455

PID control is an excellent control method and one of the first inverter control strategies to emerge. Its robustness, precise control and simple algorithm logic are often used in industrial production technology to control systems with precise mathematical models, but its use in inverter control systems is often due to the influence of the complex external environment and access to power electronics, resulting in a system that cannot be represented internally by a simple linear relationship. The PID control parameters need to be debugged empirically and cannot be precisely modified according to the real time situation, so BP neural networks are introduced to assist the process, using their ability to deal with non-linear problems to compensate for the lack of accuracy of PID control. The results of the simulation show that the improved BP neural network with the introduction of compactness and scheduling processing of the particle swarm algorithm will result in the inverter outputting a voltage and current waveform with less steady-state error than the original control strategy, and the final effect of grid-connected current tracking will be better. © 2023 IEEE.

关键词： Three term control systems

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2023 IEEE international conference on Industrial Technology, ICIT 2023

2023 IEEE International Conference on Industrial Technology,...

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2023 IEEE international conference on Industrial Technology, ICIT 2023

ISBN: (纸本)9798350336504

The proceedings contain 103 papers. The topics discussed include: flexible activation bag: learning activation functions in autoencoder networks;effects of wind noise on hybrid active noise cancellation headphones;analytical modelling of a hybrid reluctance motor based on magnetic equivalent circuit;reinforcement learning of LQR control policy by a double inverted-pendulum biomechanical model;a data-driven hybrid automaton framework to modeling complex dynamical systems;enhanced power-sharing control algorithm for dual-inverter-fed open-end-winding induction motor in hybrid electric vehicles;a python framework for system-on-chip power integrity simulation;smart highways based vehicle speed sensor with piezoelectric energy harvesting: a progress report;a deep multi-modal cyber-attack detection in industrial control systems;performance improvement of flexible common ground flying capacitor PV inverter using model predictive control;guaranteed quantization error computation for neural network model compression;and reconfigurable LNA with on-line fine-tuning of linearity and gain for 5G industrial communications applications.

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A Problem with Free Boundaries in Medicine 4

A Problem with Free Boundaries in Medicine

引用

4th international conference on control systems, Mathematical modeling, Automation and Energy Efficiency, SUMMA 2022

作者： Kudayeva, Fatimat Kh. Kaygermazov, Arslan A. Zhemukhov, Aslan Kh. Khashkhozheva, Diana A. Institute of Artificial Intelligence and Digital Technologies Kabardino-Balkarian State University Named after Kh.M. Berbekov Department of Applied Mathematics and Informatics Nalchik Russia Kabardino-Balkarian State Agricultural University Named after V.M. Kokov Faculty of Economics and Management Department of Management Nalchik Russia Institute of Chemistry and Biology Kabardino-Balkarian State University Named after Kh.M. Berbekov Department of Biology Geoecology and Molecular Genetic Bases of Living Systems Nalchik Russia

ISBN: (数字)9781665456593

ISBN: (纸本)9781665456593

Many problems associated with optimization, optimal management and numerical calculations have been investigated and solved for problems with free boundaries. This paper is devoted to the study of the problem with free boundaries, which arises in the mathematical modeling of medical problems. The task under investigation is reduced to a canonical form. A variation statement of the problem was obtained. The determination of a generalized solution to the variation problem is formulated. The theorem on the existence and uniqueness of a generalized solution has been formulated and proved. © 2022 IEEE.

关键词： Medical problems

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Reach on Access control Technology of Geomagnetic Observation Network System Based on Fog Computing 2

Reach on Access Control Technology of Geomagnetic Observatio...

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2nd international conference on Mobile Internet, Cloud Computing and Information Security (MICCIS)

作者： Sun, Luqiang Liu, Lei Ma, Chaoqun Zhu, Hong Tianjin Earthquake Agcy Tianjin Seism Stn Tianjin Peoples R China Tianjin Elect Informat Coll Dept Elect & Commun Tianjin Peoples R China Tianjin Earthquake Agcy Earthquake Emergency Informat Ctr Tianjin Peoples R China

ISBN: (纸本)9798350389913;9798350389906

In recent years, with the development of cloud computing and Internet of Things technology, earthquake observation technology has made tremendous *** earthquake agency developed a low-cost local magnetic field observation system based on cloud architecture to carry high-density deployed sensors. With the increasing deployment of sensors and the richness of application scenarios, existing access control models couldn't meet the needs of actual business *** original access control technology was based on physical network security protocols and IoT device security *** it could eliminate some security risks during the access process, there were still shortcomings that couldn't be well adapted to the needs of large-scale IoT device deployment ***, using complex access control models may result in neglecting the low local computing power of IoT geomagnetic field observation *** order to solve the above problems, the project team conducted research and analysis on access control between geomagnetic observation devices based on fog computing and combined with blockchain *** IoT access control model suitable for geomagnetic observation network systems was designed based on research *** model uses fog node agents to place the main work on the blockchain for completion and solve the problem of low computing power in some IoT *** smart contracts, the model has achieved control over device access permissions,it provided an effective and secure method for IoT access control.

关键词： blockchain access control internet of things fog calculation

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Development and Research of a control Model Based on Noise-Immune Quantum Computing, Suppression and Correction of Errors in Quantum Computing 27

Development and Research of a Control Model Based on Noise-I...

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27th Pan-Hellenic conference on Progress in Computing and Informatics with international Participation, PCI 2023

作者： Potapov, Viktor Sergey, Gushanskiy Southern Federal University Russia

ISBN: (纸本)9798400716263

In recent years, quantum information systems have attracted increasing attention of researchers in the field of computer science and physics. However, the introduction and practical application of quantum computing is limited by the influence of noise and errors that occur in quantum systems. To implement effective control and improve the reliability of quantum information systems, it is necessary to develop methods that can suppress and correct errors in the process of quantum computing. The purpose of this work is to develop and study a control model based on noise-immune quantum computing, as well as methods for suppressing and correcting errors in quantum computing. The paper proposes a combination of different approaches, including the use of error correction codes, noise suppression algorithms, and methods for optimal control of quantum information systems. In the course of the study, a control model was developed that allows efficient processing of information in quantum systems, taking into account the presence of noise and errors. Experiments were carried out using real quantum devices to evaluate the effectiveness of the proposed model. The experimental results show that the developed method can significantly improve the reliability and accuracy of quantum computing. The proposed control model based on noise-immune quantum computing and methods for suppressing and correcting errors represent a significant contribution to the development of quantum information systems. Further development and optimization of the proposed approach can lead to the creation of more reliable and efficient quantum systems capable of solving complex computational problems. © 2023 ACM.

关键词： Qubits

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