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International Conference on Power Electronics and Motion Control (IPEMC)

作者： Jinsong Xia Yuetong Wang Xiaoli Zhang Tingli Cheng Zhiwei Chen Yingying Zhang School of Electrical Engineering and Automation Hefei University of Technology HeFei China National and local joint Engineering Laboratory of renewable energy access grid technology HeFei China

ISBN: (数字)9781728153018

ISBN: (纸本)9781728153025

With the development of the power electronics technology, the power supply system of radar directly affects the performance of the radar. Higher reliability and security of electronics units in the radar array brought forward stringent requirements for its power supply system. In this paper, a large airborne radar power supply system with output power of 100kW is designed and implemented by using the layered and fused power supply architecture of "centralized rectification and decentralized voltage stabilization". The output voltage, current, power consumption and temperature of the power supply system can be monitored through the network in real time to ensure that the system works in a normal state. The design of each component of the power supply system, such as the distribution unit, the rectifier unit, the DC/DC conversion unit, the capacitance module and so on, is introduced in detail. The scheme of the power supply system has good reliability, high security, and easy expansion, which offers important reference to the design of other radar power supply and distribution systems.

关键词： Power supplies Airborne radar Rectifiers Power system stability Reliability engineering Power system reliability Security

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On the nature of a peculiar initial yield behavior in metastable β titanium alloy Ti-5Al-5Mo-5V-3Cr-0.5Fe with different initial microstructures

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Journal of Materials Science & technology 2020年第3期38卷 135-147页

作者： Jiangkun Fan Zhixin Zhang Puyi Gao Ruimeng Yang Huan Li Bin Tang Hongchao Kou Yudong Zhang Claude Esling Jinshan Li State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an710072China National&Local Joint Engineering Research Center for Precision Thermoforming Technology of Advanced Metal Materials Xi’an710072China School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’an710129China Laboratoire d’étude des Microstructures et de Mécanique des Matériaux(LEM3) CNRS 7239Universitéde Lorraine57045MetzFrance Laboratory of Excellence on Design of Alloy Metals for low-mAss Structures(DAMAS) Universitéde Lorraine57045MetzFrance

The compressive yielding phenomenon of titanium alloys is not as focused and sufficiently ascertain as the tensile yielding *** the present work,the peculiar compressive yielding behavior and the different dynamic responses of three different initial microstructures(singleβ,clavateβand lamellarβ)were investigated in an attractive metastableβtitanium alloy Ti-5553 using electron microscopes/crystallographic calculation/crystal plastic finite element *** reveal that the distinct compressive yielding behavior,steep peaks of sudden drop in the initial stage(very small true strain 0.03)of stress loading have appeared in the compression stress-strain curves except for the lamellarβinitial *** slip is the essential mechanism of the initial yielding *** multiple-slip bands formed in the singleβinitial microstructure during the warm deformation process.A small quantity of single slip bands was observed in the deformed clavateβinitial *** abundant varied nano/ultrafineβsprecipitates were nucleated dynamically and dispersedly in all the three deformed initial *** multiple-slip bands formation and substantial nanoscaleβsresult in the highest peak of flow stress for singleβinitial *** compressive slip bands are formed early in the elastic–plastic deformation *** the increasing strain,the sample showed a significant compressive bulge,or eventually forming a strong adiabatic shear band or *** results are expected to provide a reference for the study of deformation behavior and mechanical properties of metastableβtitanium alloys.

关键词： Titanium alloy Initial yield Deformation mechanism Slip band Phase transformation Ti-5553

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Application of Lithium Ion Battery in Balloon-borne Radar Emergency Power Supply

Application of Lithium Ion Battery in Balloon-borne Radar Em...

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International Conference on Power Electronics and Motion Control (IPEMC)

作者： Xiaoli Zhang Jinsong Xia Yuetong Wang Yingying Zhang School of Electrical Engineering and Automation Hefei University of Technology Hefei China National and local joint Engineering Laboratory of renewable energy access grid technology Hefei China

ISBN: (数字)9781728153018

ISBN: (纸本)9781728153025

As a new type of radar system, the balloon-borne radar system has been widely used in military and civilian fields. To ensure the short-term power supply of control systems and communication systems when the power supply of the entire radar system is insufficient, the balloon-borne radar emergency power supplies are indispensable. Considering the special requirements of the balloon-borne radar system and the characteristics of the lithium ion battery, this paper designs a balloon-borne radar emergency power supply. Firstly, the power distribution of the entire radar system is analyzed. According to the power distribution of each part of the system, the requirements of the emergency power supply is determined. Then based on these technical indicators, we design the required emergency power supply. Finally, the experimental results verify that the emergency power supply meets the design requirements. The design process and analysis method of the emergency power supply in this paper provides an inspiration for the design and analysis of similar power supplies.

关键词： Lithium-ion batteries Emergency power supplies Power distribution Radar Radar applications Temperature control Voltage control

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Retraction Note: Experimental Study for local Buckling of Curved Special-Shaped Pylon (International Journal of Steel Structures, (2024), 24, 4, (825-838), 10.1007/s13296-024-00857-0)

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International Journal of Steel Structures 2025年

作者： Wang, Huili Nie, Feng Zhao, Weihe Zhang, Dechang National and Local Joint Engineering Laboratory of Bridge and Tunnel Technology Dalian University of Technology Dalian China Beijing General Municipal Engineering Design and Research Institute Co. Ltd. Beijing China China Railway 11th Bureau Group First Engineering Co. Ltd. Hubei Province Xiangyang City China

The authors have retracted this article. Their model experiment was conducted on one sample, and after publicationof this article, they found the following problems with their study: the numbering of the 12 stress measuring points on the specimen is confusing the strain gage used was for concrete rather than for steel;as the scaling factors for different strain gages vary, this makes the data unreliable All authors agree with this retraction. © Korean Society of Steel Construction 2025.

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Intelligent Identification of Building Patches and Assessment of Roof Greening Suitability in High-density Urban Areas:A Case Study of Chengdu

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Journal of Resources and Ecology 2022年第2期13卷 247-256页

作者： LUO Luhua CHEN Mingjie DONG Lulu SU Wei LI Xin HU Xiaodong ZHANG Xin LI Chen CHENG Weiming SHI Hanning LUO Jiancheng Faculty of Geomatics Lanzhou Jiaotong UniversityLanzhou 730070China National-Local Joint Engineering Research Center of Technological and Application for National Geographic State Monitoring Lanzhou 730070China Gansu Provincial Engineering Laboratory for National Geographic State Monitoring Lanzhou 730070China College of Geoscience and Surveying Engineering China University of Mining&Technology(Bejing)Beijing 100083China School of Earth Science and Engineering Hebei University of EngineeringHebei 056000China Tianjin University Urban Planning and Design Institute Co.Ltd Tianjin 300072China State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China The ImageSky International Co.Ltd SuzhouJiangsu 215000China Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100101China School of Architecture Tianjin UniversityTianjin 300072China

With the expansion of a city,the urban green space is occupied and the urban heat island effect is *** the roof surfaces of urban buildings is an effective way to increase the area of urban green space and improve the urban ecological *** provide effective data support for urban green space planning,this paper used high-resolution images to(1)obtain accurate building spots on the map of the study area through deep learning assisted manual correction;and(2)establish an evaluation index system of roof greening including the characteristics of the roof itself,the natural environment and the human society *** weight values of attributes not related to the roof itself were calculated by Analytic Hierarchy Process(AHP).The suitable green roof locations were evaluated by spatial join,weighted superposition and other spatial analysis *** the areas within the Chengdu city’s third ring road as the study area,the results show that an accurate building pattern obtained by deep learning greatly improves the efficiency of the *** roof surfaces unsuitable for greening can be effectively classified by the method of feature extraction,with an accuracy of 86.58%.The roofs suitable for greening account for 48.08%,among which,the high-suitability roofs,medium-suitability roofs and low-suitability roofs represent 45.32%,38.95%and 15.73%.The high-suitability green buildings are mainly distributed in the first ring district and the western area outside the first ring district in *** paper is useful for solving the current problem of the more saturated high-density urban area and allowing the expansion of the urban ecological environment.

关键词： deep learning roof greening suitability assessment spatial join weighted overlay

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Experimental study on unfrozen water content of tailings based on nuclear magnetic resonance

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Journal of Applied Geophysics 2025年 241卷

作者： Yang, Yonghao Luo, Zhihao Tan, Ling Niu, Xia Long, Kun Zhu, Jiani National and Local Joint LaboratoryofTrafic Civil Engineering Materials Chongqing Jiaotong University Chongqing400074 China School of Civil Engineering Chongqing Jiaotong University Chongqing400074 China China Merchants Chongqing Communications Technology Research Design Institute Co. Ltd Chongqing400067 China State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing University Chongqing400030 China

Unfrozen water content (UWC) is an important index for evaluating the characteristics of water migration in frozen, but testing UWC is challenging in the scientific research of frozen soils. In this study, nuclear magnetic resonance was used to test the UWC of tailings. The effects of temperature, dry density, and initial water content on the type and content of unfrozen water were studied. A significance analysis was conducted between the UWC of the tailings and soil properties (dry density and initial water content) at different temperatures. Based on the parameter characteristics of the Michalowski model, the UWC prediction model is improved. The results show that the freezing of pore water begins with gravity water, and thawing begins with absorbed water. The UWC of frozen tailings increased as dry density and initial water content increased at a constant temperature. However, initial water content had a greater influence on UWC than dry density, particularly during the thawing process. The improved one-parameter Michalowski model provides a reliable prediction of UWC while reducing the complexity of the model. © 2025 Elsevier B.V.

关键词： Water content

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Bidirectional engineering of Ammonium Vanadate Enables High-Reversibility Hybrid Batteries

SSRN

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SSRN 2025年

作者： Wang, Wenlong Tian, Miao Wang, Zhitao Si, Wenhui Fan, Shuang Zhang, Wenming Ying Yang, Hui Chen, Song Hebei Key Laboratory of Optic-Electronic Information and Materials National & Local Joint Engineering Laboratory of New Energy Photoelectric Devices College of Physics Science and Technology Hebei University Baoding071002 China Hebei Key Laboratory of Optic-electronic Information and Materials College of Physics Science and Technology Hebei University Baoding071002 China Henan Engineering Research Center of Design and Recycle for Advanced Electrochemical Energy Storage Material School of Materials Science and Engineering Henan Normal University Xinxiang453007 China School of Sino-German Intelligent Manufacturing Shenzhen City Polytechnic Shenzhen518100 China Pillar of Engineering Product Development Singapore University of Technology and Design 8 Somapah Road 487372 Singapore Singapore

Layered vanadium-based materials are promising for rechargeable magnesium batteries (rMBs) due to their tunable structures and high capacities. However, the strong electrostatic interactions between Mg2+ and cathode materials lead to sluggish ion diffusion and structural degradation, limiting their application. Herein, we propose an innovative bidirectional design strategy, incorporating oxygen vacancies and conductive polymer intercalation into layered ammonium vanadate (NH4V3O8), achieving excellent energy storage capability in Mg2+/Li+ hybrid batteries. First-principles calculations reveal that oxygen vacancies promote charge transfer, while the conductive polymer interlayer reduces ion diffusion barriers, thereby accelerating ion migration. Multiphysics simulations demonstrate that the ingenious architecture improves wettability and mitigates stress concentration, enhancing cycling stability. Moreover, dual-salt electrolyte optimization reduces Mg stripping/plating overpotential and improves interfacial stability. Ex-situ characterizations elucidate the dynamic evolution of vanadium valence states and the reversible Mg2+/Li+ insertion/extraction mechanism. This study provides a systematic framework for the development of advanced cathode materials towards high-performance and sustainable energy storage solutions. © 2025, The Authors. All rights reserved.

关键词： Electrolytes

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Stress release strategy driven by multi-interface structure and dual-ion insertion toward stable hybrid batteries

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Nano Energy 2025年 142卷

作者： Si, Wenhui Tian, Miao Wang, Zhitao Ma, Heping Du, Yibo Wang, Wenlong Zhang, Longshuai Zhang, Wenming Yang, Hui Ying Chen, Song Hebei Key Laboratory of Optic-Electronic Information and Materials National & Local Joint Engineering Laboratory of New Energy Photoelectric Devices College of Physics Science and Technology Hebei University Baoding 071002 China Hebei Key Laboratory of Optic-electronic Information and Materials College of Physics Science and Technology Hebei University Baoding 071002 China Henan Engineering Research Center of Design and Recycle for Advanced Electrochemical Energy Storage Material School of Materials Science and Engineering Henan Normal University Xinxiang 453007 China Key Laboratory of Jiangxi Province for Persistent Pollutants Prevention Control and Resource Reuse Nanchang Hangkong University Nanchang 330063 China Pillar of Engineering Product Development Singapore University of Technology and Design 8 Somapah Road 487372 Singapore

Transition metal chalcogenides exhibit broad application prospects in the energy sector depending on their high energy density and cycling stability. However, the issue of internal stress regulation within them is seriously neglected. Herein, we explore a novel cathode material for the first time and innovatively propose a stress release strategy driven by a multiple interface structure and dual-ion insertion to achieve superior energy storage behavior. We have designed a system with multi-interfaces Cu4SnS4 cathode and APC-LiCl electrolyte to validate the rationality of our thought. Finite element simulations directionally demonstrate that dual-ion insertion and the multi-interface structure possess the capability to alleviate stress in many directions and exhibit exceptional wettability, thereby maintaining structural integrity from a mechanical perspective and significantly enhancing ion diffusion capabilities. Ex-situ characterizations and theoretical calculations comprehensively analyze the reaction mechanisms during magnesiation/lithiation processes, confirming the necessity of regulating internal stress and reaction kinetics. The proposed stress relief strategy not only provides inspiration for developing cathode materials with superior performance and durability but also opens a new path for driving technological innovation and industrial upgrading in the energy fields.

关键词： Cathode Dual-ion insertion Hybrid batteries Multiple interface Stress release

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Correction: Exploring Agrobacterium-mediated genetic transformation methods and its applications in Lilium

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Plant methods 2024年第1期20卷 138页

作者： Xinyue Fan Hongmei Sun Key Laboratory of Protected Horticulture of Education Ministry College of Horticulture Shenyang Agricultural University Shenyang 110866 China. Key Laboratory of Protected Horticulture of Education Ministry College of Horticulture Shenyang Agricultural University Shenyang 110866 China. sunhm@***. National and Local Joint Engineering Research Center of Northern Horticultural Facilities Design and Application Technology Shenyang 110866 China. sunhm@***.

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A Method for Reverse-Inferring Fuel Gas Composition from Flue Gas Information Based on Residual Network and Physical Constraints

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Energy 2025年

作者： Shijiu Ma Jianmin Gao Biao Huang Heming Dong Xiao Yang Ximei Li Qian Du Laicong Han School of Energy Science and Engineering Harbin Institute of Technology No.92 West Dazhi Street. Harbin 150001 China National Industry-Education Platform for Energy Storage Harbin Institute of technology China-Russia Advanced Energy and Power Technology 'the Belt and Road' Joint Laboratory School of Mechanical and Electrical Engineering Heilongjiang University (Mechanical Design Manufacturing and Automation) No.40 Xuefu Sandao Street. Harbin 150080 China

The gas quality of different gas sources fluctuates, and direct combustion will adversely affect the operation of gas equipment. This paper proposes a method for reverse-inferring fuel gas composition from flue gas information based on residual network and convex optimization (ResNet-CVX), achieving data and physical driving. The method takes flue gas information as input to achieve real-time prediction of methane, ethane, propane, and butane content in fuel gas. The data in this paper are from the energy efficiency test reports of boiler products. Data-driven experiments results show that the maximum absolute prediction errors of the model for CH 4 , C 2 H 6 , C 3 H 8 , and C 4 H 10 are 1.75 Vol.%, 1.25 Vol.%, 0.7 Vol.%, and 0.15 Vol.%, respectively. The model output satisfies physical constraints such as component content and carbon conservation constraints, and no error propagation or interval variation due to inter-component constraints is observed. The relative error of the calorific value calculated from the output fuel gas components is controlled within 1.65%. Compared with the ResNet, it exhibits a lower RMSE and a higher R 2 . This indicates that ResNet-CVX has stronger predictive capabilities, superior generalization performance and physical authenticity. In summary, this method provides technical support for energy-saving modifications and stable operation of gas equipment.

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