检索结果-内蒙古大学图书馆

2023 International Conference Automatics and Informatics, ICAI 2023

作者： Ivanov, Stefan Nedev, Nedyu Nenova, Zvezditza Technical University of Gabrovo Department of Automation Information and Control Systems Gabrovo Bulgaria Technical University of Gabrovo Department of Fundamentals of Electrical and Power Engineering Gabrovo Bulgaria

ISBN: (纸本)9798350312911

In the present work is investigated the impact of ambient temperature in the range of 20°C to 50°C under a change in relative humidity RH of 20% up to 92 % on the characteristics of a highly sensitive TiO2-SiO2-based thin-film impedance humidity sensor element doped with Ce and prepared by a sol-gel method. The variation of sensor impedance changes in a very wide range - about 4 orders of magnitude. The sensor element is connected in a measurement circuit based on an AC bridge, a variable gain amplifier, a precision rectifier, and a microcontroller with a built-in analog-to-digital converter. The use of artificial neural networks monitoring the ambient temperature and measured voltage is proposed for the realization of the temperature compensation of the characteristics. The proposed approach allows compensating the impact of temperature and performing measurements when connecting humidity sensing elements with a very wide range of impedance change. © 2023 IEEE.

关键词： Silica

来源：评论

学校读者我要写书评

暂无评论

Optimization of Cylindrical Blades for Wind Turbine Based on Magnus Effect

Optimization of Cylindrical Blades for Wind Turbine Based on...

引用

2023 International Conference on Electromechanical and Energy systems, SIELMEN 2023

作者： Lukin, Aleksandr Demidova, Galina Lukichev, Dmitry Poliakov, Nikolai Anuchin, Alecksey ITMO University Faculty of Control Systems and Robotics Saint-Petersburg Russia Moscow Power Engineering Institute Electric Drives Department Moscow Russia

ISBN: (纸本)9798350315240

Wind turbines based on the Magnus effect open new prospects in terms of energy generation for areas with low average wind speeds. The main feature of these turbines is rotating cylinders which are used to create lift instead of blades. Due to this unconventional design, different parameters of the cylinder, such as mass and moment of inertia, can greatly affect the dynamic characteristics of such energy systems. The goal of this paper was to present an approach to structural optimization of a cylinder flange of the experimental Magnus effect-based wind turbine. The proposed approach, presented as an algorithm, allows us to determine input data for the preferred structural optimization software and achieve lightweight, low-inertia parts. control simulation has shown that optimized parts ensure a high enough factor of safety while also significantly reducing the moment of inertia. © 2023 IEEE.

关键词： Finite element method

来源：评论

学校读者我要写书评

暂无评论

A Data-Driven Closed-Loop System Identification Approach Using Canonical Correlation Analysis 25

A Data-Driven Closed-Loop System Identification Approach Usi...

引用

25th IEEE International Conference on Industrial Technology, ICIT 2024

作者： Qiao, Xinyu Li, Xianling Zheng, Wei Huo, Mingyi Jiang, Yuchen Luo, Hao Harbin Institute Of Technology Department Of Control Science And Engineering Harbin China Wuhan 2ndShip Design And Research Institute Science And Technology On Thermal Energy And Power Laboratory Wuhan China

ISBN: (纸本)9798350340266

In this paper, a data-driven closed-loop system identification approach using canonical correlation analysis (CCA) is proposed. Based on the subspace identification methods (SIM), an auxiliary matrix is constructed by utilizing known controller information in the structure of the closed-loop system. With the help of the projection, the equivalent relationship between past input and future output is found, and the optimal identification of system parameters is implemented by using the CCA method. The proposed method solves the biased identification problem caused by the correlation between closed-loop input and noise. The main results are tested and verified via the numerical example, and the superiority of the identification estimation results of the proposed method is compared through different methods. © 2024 IEEE.

关键词： Closed loop systems

来源：评论

学校读者我要写书评

暂无评论

Biodiesel: A Sustainable Alternative to Fossil Fuels for Internal Combustion Engines 7

Biodiesel: A Sustainable Alternative to Fossil Fuels for Int...

引用

7th International Youth Conference on Radio Electronics, Electrical and power engineering, REEPE 2025

作者： Ismail, Ali Arakelyan, Edik K. Bo-Dakkah, Baydaa National Research University 'MPEI' Automated Control Systems for Thermal Processes Department Moscow Russia Tishreen University Mechanical Power Engineering Department Latakia Syria National Research University 'MPEI' Industrial Heat Power Engineering Systems Department Moscow Russia Damascus University Mechanical Engineering Department Damascus Syria

ISBN: (纸本)9798331531836

This article discusses the limitations and increasing costs of petroleum and fossil fuels for internal combustion engines, and highlights the urgent need for alternative fuel sources. It emphasizes the environmental and health issues caused by diesel fuel emissions and discusses biodiesel as a promising alternative. Biodiesel, derived from plant seeds or biomass through esterification, is a renewable, oil-free fuel that can be blended with diesel. The share of biofuels in the automotive industry has been growing rapidly due to environmental, social and economic concerns. Various approaches to using vegetable oils as biofuels in internal combustion engines have been explored, including pyrolysis, micro emulsification, and esterification. The study investigates the ignition characteristics of conventional diesel and biodiesel blends, with experimental results showing promise for reducing environmental impact and conserving resources. © 2025 IEEE.

关键词： Internal combustion engines

来源：评论

学校读者我要写书评

暂无评论

Outlier Treatment and Adaptive Signal Conditioning of Wheel Speed Measurement for Antilock Brake System 16

Outlier Treatment and Adaptive Signal Conditioning of Wheel ...

引用

16th International Conference on COMmunication systems and NETworkS, COMSNETS 2024

作者： Rajesh, R. Gaurkar, Pavel Vijay Vivekanandan, Gunasekaran Sivaram, Sriram Subramanian, Shankar C. Indian Institute of Technology Madras Department of Engineering Design Chennai India Madras Engineering Industries Private Ltd. Air Brake Control Systems Chennai India Madras Engineering Industries Private Ltd. Chennai India

ISBN: (纸本)9798350383119

Wheel speed is an important physical quantity used to implement an Antilock Brake System (ABS) in vehicles. This study uses a Variable Reluctance - Wheel Speed Sensor (VR - WSS) for wheel speed measurement, which is commonly used in Heavy Commercial Road Vehicles (HCRVs). However, wheel speed measurement from in-vehicle experiment results was affected by various time-varying attributes such as noise and outliers. The abovementioned physical measurement considerations are characterized through statistical measures to analyze the consequences on ABS performance. Further, these have been programmed in IPG TruckMaker®, a vehicle dynamics simulation software and experimentally demonstrated using an HCRV Hardware-in-the-Loop (HiL) setup with ABS algorithm. The experimental results showed that the ABS performance is degraded in terms of braking distance and braking efficiency due to these practical considerations. Therefore, this study proposes an adaptive signal conditioning algorithm to address these physical considerations. It consists of an outlier treatment to handle non-synchronized arbitrary data points and an adaptive filter to handle time-varying noise signals in the measurement. The outcomes of the closed-loop HiL evaluation of the ABS algorithm integrated with the signal conditioning algorithm confirmed that the proposed method retained the ABS performance while addressing practical measurement considerations. © 2024 IEEE.

关键词： Antilock brake system Outlier treatment Signal conditioning Wheel speed measurement

来源：评论

学校读者我要写书评

暂无评论

control and Stability of Large-scale power System with Highly Distributed Renewable Energy Generation:Viewpoints from Six Aspects

引用

CSEE Journal of power and Energy systems 2023年第1期9卷 8-14页

作者： Qing-Hua Wu Anjan Bose Chanan Singh Joe H.Chow Gang Mu Yuanzhang Sun Zhaoxi Liu Zhigang Li Yang Liu School of Electric Power Engineering South China University of TechnologyGuangzhou 510640China School of Electrical Engineering&Computer Science Washington State UniversityPullmanWA 99164USA Department of Electrical and Computer Engineering Texas A&M UniversityCollege StationTX 77843USA Department of Electrical Computer and Systems EngineeringRensselaer Polytechnic Institute(RPI)TroyNYUSA Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology Ministry of Education(Northeast Electric Power University)Jilin 132012China School of Electrical Engineering and Automation Wuhan UniversityWuhan 430072China

power systems are moving toward a low-carbon or carbon-neutral future where high penetration of renewables is *** conventional fossil-fueled synchronous generators in the transmission network being replaced by renewable energy generation which is highly distributed across the entire grid,new challenges are emerging to the control and stability of large-scale power *** analysis and control methods are needed for power systems to cope with the ongoing *** the CSEE JPES forum,six leading experts were invited to deliver keynote speeches,and the participating researchers and professionals had extensive exchanges and discussions on the control and stability of power ***,potential changes and challenges of power systems with high penetration of renewable energy generation were introduced and explained,and advanced control methods were proposed and analyzed for the transient stability enhancement of power grids.

关键词： Distributed energy resources high converter penetration power system control renewable energy generation stability control transient stability

来源：评论

学校读者我要写书评

暂无评论

Analytic Mechanism for the Cumulative Effect of Wind power Fluctuations from Single Wind Farm to Wind Farm Cluster

引用

CSEE Journal of power and Energy systems 2022年第5期8卷 1290-1301页

作者： Gang Mu Fangze Wu Xiaoping Zhang Ziheng Fu Bai Xiao Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology Ministry of Education(Northeast Electric Power University)Jilin 132012China Department of Electronic Electrical and Systems EngineeringSchool of EngineeringUniversity of BirminghamBirmingham B152TTU.K

The use of wind power is rapidly growing worldwide as a means of reducing carbon emissions for the energy *** has the world’s largest wind power installation and multiple large-scale wind farm clusters,each comprising dozens of wind *** the planning and operation of the power system,it is important to understand the power fluctuation characteristics of wind farm *** studies demonstrate that the relative power fluctuation of a wind farm cluster is less than that of a single wind *** this decreasing trend a random occurrence or does it have a regular pattern?This scientific question is addressed by investigating the mechanism of the cumulative effect of a wind farm *** this study,a cumulative model is proposed by examining the spatiotemporal relationships of wind power variations and wind farm *** gain function and critical cumulative frequency are defined as the foundations to analytically describing the cumulative *** investigating the cumulative effect mechanism,the relationship between power fluctuation and spatiotemporal parameters of the wind farm cluster are *** power fluctuation of a cluster can be predicted using the cumulative model even before it is completely *** mechanism of the cumulative effect is validated on the basis of the data of two actual wind farm clusters.

关键词： Analytic mechanism cumulative effect evolution regularity wind farm cluster wind power fluctuation

来源：评论

学校读者我要写书评

暂无评论

Catalytic urea hydrolysis by composite metal oxide catalyst towards efficient urea-based SCR process:performance evaluation and mechanism investigation

引用

Frontiers of Environmental Science & engineering 2023年第5期17卷 67-80页

作者： Yuchen Li Zhen Chen Xiangyu Zhang Kun Yang Lidong Wang Junhua Li MOE Key Laboratory of Resources and Environmental Systems Optimization Department of Environmental Science and EngineeringNorth China Electric Power UniversityBeijing 102206China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Xi’an Thermal Power Research Institute Co. Xi’an 710032China

As a promising option to provide gaseous NH_(3) for SCR system,catalytic urea hydrolysis has aroused great attention,and improving surface area and activity of catalysis are the crucial issues to be solved for efficient urea ***,a composite metal oxide(TiO_(2)@Al_(2)O_(3))catalyst was prepared by a simple hydrothermal method,with mesoporous alumina(γ-Al_(2)O_(3))as *** results verify the mesoporous structure and submicron cluster of TiO_(2)@Al_(2)O_(3),with exposed crystal faces of(101)and(400)for TiO_(2)andγ-Al_(2)O_(3),*** electronegativity difference of Ti4+and Al3+changes the charge distribution scheme around the interface,which provides abundant acid/base sites to boost the urea ***,for an optimal proportioning with nano TiO_(2)content at 10 wt.%,the hydrolysis efficiency can reach up to 35.2%at 100℃ in 2 h,increasing by~7.1%than that of the blank experiment.^(13)C NMR spectrum measurements provide the impossible intermediate species during urea *** calculations are performed to clarify the efficient H_(2)O decomposition at the interface of TiO_(2)@Al_(2)O_(3).The result offers a favorable technology for energy-efficiency urea hydrolysis.

关键词： SCR Urea hydrolysis Catalytic Water dissociation Electronegativity

来源：评论

学校读者我要写书评

暂无评论

Operation Analysis and Performance Evaluation of a Modular Step-Down DC-DC Converter 7

Operation Analysis and Performance Evaluation of a Modular S...

引用

7th IEEE International Conference on Smart Technologies in power engineering and Electronics, STEE 2024

作者： Stepenko, Serhii Stala, Robert Waradzyn, Zbigniew Yatchenko, Yevhenii Prystupa, Anatoliy Chernihiv Polytechnic National University Electrical Engineering Information and Measurement Technologies Chernihiv Ukraine Agh University of Krakow Department of Power Electronics and Energy Control Systems Kraków Poland

ISBN: (纸本)9798331540999

The paper presents a comprehensive analysis of the design parameters, operational characteristics and performance evaluation of a modular step-down DC-DC converter. The converter is engineered for applications demanding high-output current, featuring an input voltage of 48 V and an output voltage of 1 V. When operating in the single-stage voltage regulator module (VRM), its modular architecture is optimized to minimize resistive losses. Noteworthy is the integration of an input capacitor divider to alleviate voltage stress of components. Additionally, special attention is given to the impact of parasitic parameters on the converter's performance. Through a meticulous examination of system topology, validated by observed current and voltage waveforms, and analytical comparison to classic interleave converters, this study elucidates the operational intricacies of the converter. The findings, anchored in the context of a MOSFET-based four-module converter rated for a maximum power output of 350 W at 1 V, provide valuable insights for the design and optimization of similar power conversion systems. © 2024 IEEE.

关键词： DC-DC converters

来源：评论

学校读者我要写书评

暂无评论

Creating and Studying a Methodology for Calculating a Resistive Voltage Divider for Use in Electronic Voltage Transformers

Creating and Studying a Methodology for Calculating a Resist...

引用

International Youth Scientific and Technical Conference on Relay Protection and Automation (RPA)

作者： A.A. Yablokov A.V. Panashchatenko E.E. Gotovkina R.A. Maltsev Electric power systems automatic control department Electric systems department Ivanovo State Power Engineering University Ivanovo Russia

ISBN: (数字)9798331501105

ISBN: (纸本)9798331501112

In 2017 the Russian government approved a programme, Russian Federation Digital Economy, the main goal of which is to create an ecosystem with large scale use of digital format data in all fields of social and economic activity [1]. The electric power industry is being transformed in accordance with the concept, Digital Transformation 2030, developed by Russian power Grids PLC [2]. Pursuant to this concept, electric substations under construction should be digital. At present, Russia has a number of operating digital substations (DSS) (Medvedevskaya SS, UVAT SS, Desna SS, Tobol SS [3]–[5], while many DSSs are at the design or construction stage. The creation of new substations, and also reconstruction of already operating ones, requires solving the problems of operating conventional electromagnetic current and voltage transformers. Electromagnetic voltage transformers (VT) are energy-inefficient, explosion – and flammability- hazardous equipment (due to their requiring additional charging with low consumption by micro-processing devices), with large weight and dimensions (an NKF-100 type transformer weighing 840 kg).

关键词： Resistors Resistance Substations Voltage measurement Voltage transformers Biological system modeling Spread spectrum communication Transformers Integrated circuit modeling Electromagnetics

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：