作者: 张海峰1;,赵晋忠1;,伊思静1;,卢士香2; (1山西农业大学基础部;2北京理工大学化学与化工学院)
出处: 原子与分子物理学报 2025 第42卷 第2期 P30-38
关键词: ZnO;Cu掺杂;缺陷共存;密度泛函理论;光催化
摘要: 采用密度泛函理论研究了Cu掺杂及缺陷共存对ZnO光催化性能的影响.计算时考虑了富O和贫O两种掺杂条件.研究结果表明富O条件有利于Cu的掺杂,贫O条件则产生抑制作用.当Cu掺杂浓度较低时,不论在何种掺杂条件下,Cu的主要掺杂方式均为CuZn型.当Cu掺杂浓度较高时,富O条件下以C ...
作者: Zhe ZHANG,Zijing ZHAO,Xiangyang LIU,Ningfei WANG (School of Aerospace Engineering, Beijing Institute of Technology)
出处: Chinese Journal of Aeronautics 2024 第6期
关键词: Electric propulsion;Lifetime test;Micro-Cathode-Arc Thruster(μCAT);Conductive film;Discharge characteristics;Plasma parameters
摘要: Ground lifetime test is the most crucial experiment to assess the performance,reliability,and flight qualification of electric propulsion, and it can ...
作者: Hanyu WANG,Qiang SHEN,Zilong DENG,Xinyi CAO,Xiaokang Wang (School of Mechatronical Engineering, Beijing Institute of Technology;Beijing Institute of Technology Chongqing Innovation Center)
出处: Chinese Journal of Aeronautics 2024 第6期
关键词: Satellite imagery;Unmanned Aerial Vehicle(UAV);Deep neural networks;Vision navigation;von Mises-Fisher distribution
摘要: Obtaining absolute pose based on pre-loaded satellite images is one of the important means of autonomous navigation for small Unmanned Aerial Vehicles ...
作者: Sichen CHEN,Zhiqiang LIANG,Yuchao DU,Zirui GAO,Haoran ZHENG,Zhibing LIU,Tianyang QIU,Xibin WANG (School of Mechanical Engineering, Beijing Institute of Technology;Beijing Institute of Technology Chongqing Innovation Center)
出处: Chinese Journal of Aeronautics 2024 第6期
关键词: Robotic milling;Chatter detection;Variational mode decomposition;Information fusion and compression;Chatter featur
摘要: Undesirable self-excited chatter has always been a typical issue restricting the improvement of robotic milling quality and efficiency.Sensitive chatt ...
作者: Zhou HU1;,Zhibo WEI2;,Yan CHEN2,3;,Rui ZHU1; (1School of Aerospace Engineering, Beijing Institute of Technology;2School of Mechanical Engineering, Tianjin University;3Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education,Tianjin University)
出处: Applied Mathematics and Mechanics(English Edition) 2024 第45卷 第7期 P1225-1242
摘要: Elastic metamaterials with unusual elastic properties offer unprecedented ways to modulate the polarization and propagation of elastic waves. However, ...
作者: YE Lingjuan1,2;,YANG Liwen3;,XIA Yuanqing4;,ZHAN Yufeng4;,ZHAO Xinchao1,2; (1School of Science, Beijing University of Posts and Telecommunications;2Key Laboratory of Mathematics and Information Networks, Beijing University of Posts and Telecommunications, Ministry of Education;3School of Automation, Nanjing University of Information Science and Technology;4School of Automation, Beijing Institute of Technology)
出处: Journal of Systems Science & Complexity 2024 第37卷 第5期 P1861-1886
摘要: In cloud control systems, generating an efficient and economical workflow scheduling strategy for deadline-constrained workflow applications, especial ...
作者: Jiahui QIU,Chen YANG,Wenqiang ZHANG,Min ZHANG,Juan DU (Digital Twin Research Center, Institute of Engineering Thermophysics, Chinese Academy of Sciences;School of Engineering and Science, University of Chinese Academy of Sciences;National Key Laboratory of Science and Technology on Advanced Light-duty Gas-turbine, Chinese Academy of Sciences;School of Mechatronical Engineering, Beijing Institute of Technology)
出处: Chinese Journal of Aeronautics 2024 第6期
关键词: Upstream effect;Orbit method;Induced swirl distortion;Body force model;Correction factor;Time-averaged URANS
摘要: To numerically study the impact of total temperature distortion on a transonic compressor with reduced computational costs,a Body-Force Model (BFM)is ...
作者: Shaozhao LU,Yao ZHANG,Quan HU (School of Aerospace Engineering, Beijing Institute of Technology)
出处: Chinese Journal of Aeronautics 2024 第5期
关键词: Relative motion;Expanding training database;Multilayer perceptron;Initial costates;Least-squares method
摘要: In this paper, we present a novel initial costates solver for initializing time-optimal trajectory problems in relative motion with continuous low thr ...
作者: ZHANG Zhibing1;,ZHOU Dapeng1;,WANG Yeguang1;,GAO Wanxin2,3;,ZHANG Yanjun2,3; (1AVIC Shenyang Aircraft Design and Research Institute;2School of Automation, Beijing Institute of Technology;3State Key Lab of Autonomous Intelligent Unmanned Systems, Beijing Institute of Technology)
出处: Journal of Systems Science & Complexity 2024 第37卷 第4期 P1507-1525
摘要: The stability margin is a vital indicator for assessing the safety level of aircraft control systems. It should maintain sufficient stability margin t ...
作者: Yiwei LUO,Tianfu AI,Yuhang HE,Bin XU,Yuping QIAN,Yangjun ZHANG (State Key Laboratory of Intelligent Green Vehicle and Mobility, School of Vehicle and Mobility, Tsinghua University;Key Laboratory of Conveyance and Equipment Ministry of Education, East China Jiaotong University;Vehicle Research Center, School of Mechanical Engineering, Beijing Institute of Technology;Beijing Institute of Technology Chongqing Innovation Center)
出处: Chinese Journal of Aeronautics 2024 第5期
关键词: Unmanned Aerial Vehicle(UAV);Ducted fan;Wind effect;Thrust fluctuations;Computational Fluid Dynamics (CFD)
摘要: Ducted fans have been extensively used in Unmanned Aerial Vehicles(UAVs)for a variety of missions because of high efficiency, high safety and low nois ...
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