机电学院是北京理工大学以军为主、军民融合、具有鲜明军工特色的主要院系之一,其前身是成立于1954年的第二机械系(弹药系),经过半个多世纪的建设与发展,特别是改革开放以来,已形成多学科、多层次的办学实体,学科专业和科学研究国防特色鲜明,办学实力雄厚,规模不断扩大,质量不断提高,各项工作都取得了明显成绩... [详细]
作者: 岳胜哲,王正杰 (北京理工大学机电学院)
出处: 兵工学报 2024 第45卷 第1期 P156-165
关键词: 动态环境;光流法;实例分割;语义SLAM
摘要: 针对传统语义实时定位与建图(Semantic real-time Localization and Mappling, SLAM)算法在动态环境下剔除特征点过多、造成定位精度降低的问题,提出一种基于实例分割与光流的视觉语义SLAM算法。算法使用Mask R-CNN网络对图像中的潜在动态物体进行实例级 ...
作者: Xiangyi Wang;Cuiying Ye;Pengfei Chen;Hao Pang;Chuanhui Wei;Yuxue Duan;Tao Jiang;Zhong Lin Wang (CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400 P. R. China School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing, 100049 P. R. China CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400 P. R. China School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing, 100049 P. R. China CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400 P. R. China School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing, 100049 P. R. China School of Mechatronical Engineering, Beijing Institute of Technology, Beijing, 100081 P. R. China CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400 P. R. China School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing, 100049 P. R. China School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi, 530004 P. R. China CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400 P. R. China School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing, 100049 P. R. China CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400 P. R. China Georgia Institute of Technology, Atlanta, GA, 30332 USA)
出处: Advanced Functional Materials 2024 Vol.34 No.6 P2311196
关键词: blue energy harvesting;charge pumping;marine environmental protection;multilayered swing-structures;triboelectric nanogenerators
摘要: Protecting marine environment is an important and urgent task to maintain marine ecological balance. As a promising blue energy harvesting technology, ...
作者: Enhui Wang;Wei Wang;Lujun Niu;Yansong Feng;Haifeng Zhao;Yongshi Luo;Ligong Zhang;Qiqing Li;Haoran Chen;Yulei Chang;Langping Tu;Hong Zhang;Jing Zuo (Key Laboratory of Automobile Materials of Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022 China Department of Neurosurgery, The First Hospital of Jilin University, Changchun, 130000 China Key Laboratory of Automobile Materials of Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022 China State Key Laboratory of Explosion Science and Technology, School of Mechatronical Engineering, Beijing Institute of Technology, Beijing, 100081 China State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences Changchun, Jilin, 130033 China State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences Changchun, Jilin, 130033 China State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences Changchun, Jilin, 130033 China State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences Changchun, Jilin, 130033 China State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences Changchun, Jilin, 130033 China State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences Changchun, Jilin, 130033 China State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences Changchun, Jilin, 130033 China Van ’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH The Netherlands Key Laboratory of Automobile Materials of Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022 China)
出处: Advanced Optical Materials 2024 Vol.12 No.5 P2301827
关键词: cross relaxation;information encryption;low temperatures;nanostructures;upconversion
摘要: Recent advances reveal that due to the cross-relaxation restriction, impressive upconversion (UC) enhancement (≈100-folds) can be achieved in cryogeni ...
作者: 徐祎,陈百权,马兹浩,彭芋程,赵勃兴 (北京理工大学爆炸科学与技术国家重点实验室;北京理工大学)
出处: 兵器装备工程学报 2024 第45卷 第2期 P9-15
关键词: 视景仿真;毁伤评估;杀爆战斗部;预制破片;破片威力场;相控阵雷达
摘要: 为提高战斗部的设计迭代与毁伤评估效率,引入典型相控阵雷达的目标易损性模型,构建了杀爆战斗部威力场计算模型、弹目交会模型以及典型相控阵雷达的毁伤概率计算模型,并基于Unity3D引擎搭建了杀爆战斗部对相控阵雷达的毁伤评估系统。系统能够实现杀爆战斗部的参数化设计、威力场计算以及杀爆战斗部对典型相控阵雷达 ...
作者: 韩志跃1;,杨军1;,杜志明1;,李昊阳1;,王珊珊2; (1北京理工大学爆炸科学与技术国家重点实验室;2北京理工大学分析测试中心)
出处: 安全与环境学报 2024 第24卷 第2期 P560-569
关键词: 安全工程;杯式燃烧器;测试系统;灭火剂;最小灭火浓度(MEC);灭火性能
摘要: 杯式燃烧器试验是消防领域用于测定气体灭火剂最小灭火浓度的经典方法。自哈龙灭火剂被淘汰以来,哈龙替代物经历了不同相态的发展,促使杯式燃烧器测试系统进行相应的改进,同时基于杯式燃烧器测试系统的灭火性能评价研究也在不断拓展。综述了国内外杯式燃烧器测试系统的使用和改进研究,重点介绍了适用于气相、液相、固相和 ...
作者: 闫晓鹏,张锦玉,郝新红,李剑锋,代健 (北京理工大学机电动态控制重点实验室)
出处: 兵工学报 2024 第2期
关键词: 多项式Chirplet变换;参数估计; 调频连续波;参数化时频分析; 干扰重构
摘要: 针对现代战场环境下线性调频引信干扰技术的迫切需求,提出多项式Chirplet变换的方法实现低信噪比下对调频连续波无线电引信的信号参数估计,并针对调频连续波引信重构了干扰信号。基于线性小波变换原理,选取适当的核函数,将无线电引信信号经过旋转与平移操作后进行短时傅里叶变换,再利用遗传算法求得变换核的最优 ...
作者: 王昕捷,王心宇,丁凯,黄风雷 (北京理工大学爆炸科学与技术国家重点实验室)
出处: 北京理工大学学报 2024 第44卷 第2期 P123-134
关键词: PBX-9501;低速撞击;微裂纹演化;黏塑性
摘要: 为研究塑性黏结炸药PBX-9501在低速撞击条件下的力学变形、损伤以及温升情况,发展了基于黏塑性演化方程以及复杂应力状态下微裂纹形核、演化机制的非线性黏弹塑性细观损伤力热化学耦合模型.通过分析低速撞击试验中力学变形-损伤对炸药宏细观温升的影响,可确定炸药发生点火的主导机制及点火速度阈值,结果表明:撞 ...
作者: 王新伟,闫晓鹏,郝新红,陈齐乐,黄鼎琨 (北京理工大学机电动态控制重点实验室)
出处: 兵工学报 2024 第45卷 第1期 P97-104
关键词: 脉冲多普勒引信;波达方向;合成虚拟阵列;阵列分解;数字波束形成
摘要: 为提高脉冲多普勒(Pulse Doppler, PD)引信的波达方向(Direction of Arrival, DOA)分辨率,利用引信的运动特性,将不同时刻下的回波数据进行组合,合成一个大孔径的虚拟阵列,达到扩展孔径的目的,并利用数字波束形成(Digital Beam Forming, DBF) ...
作者: 马天宝,龙俊文,刘玥 (北京理工大学爆炸科学与技术国家重点实验室)
出处: 北京理工大学学报 2024 第3期
关键词: 水中爆炸;冲击波耦合作用;超压计算模型;神经网络;多爆源
摘要: 为了获得水中等质量两爆源同步爆炸时冲击波耦合中心的峰值压力计算模型,利用Autodyn 计算得到不同药量和爆距下的峰值压力数据.一方面根据量纲分析确定的函数形式拟合数据从而获得峰值压力的计算公式;另一方面对药量、爆距及峰值压力三类数据进行对数变换和归一化,并将其分为训练集和测试集,然后将训练集代入B ...
作者: 李云飞1;,高鑫1,2;,陈鹏万1,2;,刘开源1; (1北京理工大学爆炸科学与技术国家重点实验室;2北京理工大学前沿技术研究院)
出处: 兵工学报 2024 第45卷 第1期 P26-34
关键词: TiB2/B4C;复相陶瓷;自蔓延高温合成;爆炸烧结;微观结构
摘要: 为了探究高硬度复相陶瓷高效且低成本的制备方法,利用自蔓延高温合成结合爆炸烧结技术,开展制备二硼化钛/碳化硼(TiB2/B4C)复相陶瓷的研究,成功制备厚度约为1 cm、直径约为5 cm的TiB2/B4C复相陶瓷块 ...