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Jie JI, Junrui DUAN, Huaxian WAN
《能源前沿(英文)》 2022年 第16卷 第6期 页码 1017-1026 doi: 10.1007/s11708-020-0716-x
关键词: flame interaction air entrainment flame height multi-point source model thermal radiation
Optimization of controlled mechanism based on generalized inverse method
YANG Jin-tang, KONG Jian-yi, XIONG He-gen, JIANG Guo-zhang, LI Gong-fa
《机械工程前沿(英文)》 2006年 第1卷 第3期 页码 288-291 doi: 10.1007/s11465-006-0037-8
关键词: controlled displacement multi-point compensation optimization
Fundamental frequency and testing mode of complicated elastic clamped-plate vibration
QI Hongyuan, GUAN Yiduo
《机械工程前沿(英文)》 2008年 第3卷 第4期 页码 360-364 doi: 10.1007/s11465-008-0084-4
关键词: multi-point excitation rectangle-plate single-point processing technology trigonometric interpolation
Chu-hua HUANG,Dong-ming LU,Chang-yu DIAO
《信息与电子工程前沿(英文)》 2016年 第17卷 第5期 页码 422-434 doi: 10.1631/FITEE.1500316
关键词: Multi-view video Free-viewpoint video Point-pair Multiscale-contour-based interpolation Spatio-temporal-contour Consistency Time-varying point cloud sequence
Belkacem MAHDAD, K. SRAIRI
《能源前沿(英文)》 2013年 第7卷 第1期 页码 75-89 doi: 10.1007/s11708-012-0222-x
关键词: differential evolution multi-objective function optimal power flow economic dispatch valve point effect environment wind source STATCOM
STRENGTHENING NON-POINT SOURCE POLLUTION CONTROL TO PROMOTE AGRICULTURAL GREEN DEVELOPMENT
《农业科学与工程前沿(英文)》 2023年 第10卷 第4期 页码 503-509 doi: 10.15302/J-FASE-2023528
STRENGTHENING NON-POINT SOURCE POLLUTION CONTROL TO PROMOTE AGRICULTURAL GREEN DEVELOPMENT
关键词: GREEN AGRICULTURAL PROMOTE POLLUTION SOURCE DEVELOPMENT POINT STRENGTHENING CONTROL
丁雷,吴敏,佘锦华,段平
《中国工程科学》 2010年 第12卷 第2期 页码 101-107
针对铅锌烧结过程综合透气性、烧结终点的优化具有强非线性、计算复杂等特点,提出了一种有效的多目标粒子群协同优化算法。首先,建立了有综合透气性、烧结终点两个目标的优化模型。接着,通过改进的约束比较方法、粒子极值选取方法,以及利用不同的粒子群来分别优化相应的变量,提出了一种改进的多目标粒子群协同优化算法。最后,利用提出的多目标优化算法进行综合透气性、烧结终点的优化。仿真结果表明,所提出的多目标优化算法能较好地解决综合透气性、烧结终点的优化问题。
关键词: 铅锌烧结过程 综合透气性 烧结终点 多目标粒子群协同优化算法
基于迁移学习与多视角感兴趣点的膝关节运动追踪网络 Article
王聪, 谢帅宁, 李康, 王重阳, 刘旭东, 赵亮, 蔡宗远
《工程(英文)》 2021年 第7卷 第6期 页码 881-888 doi: 10.1016/j.eng.2020.03.016
近年来,深度学习为一种基于二维(2D)—三维(3D)配准技术以测量人体膝关节运动的方法,该方法提供了快速完成配准并增加捕捉范围的可能性。但这类方法受限于大量的数据需求,因此,我们提出了一种基于特征的迁移学习法,用于提取荧光透视影像的特征。通过三个受试者以及不到100对荧光透视影像,我们获得了40%的平均配准成功率。本研究提出的基于学习的配准方法,可在荧光透视影像数量有限时使用。
光刻机小型复合节流静压气浮导轨微结构参数设计 Article
温众普, 吴剑威, 邢坤鹏, 张银, 李结安, 谭久彬
《工程(英文)》 2021年 第7卷 第2期 页码 226-237 doi: 10.1016/j.eng.2019.09.012
在光刻机可变狭缝系统(VS)中,紧凑型复合节流静压气浮导轨是实现高精度、高加速度运动的首选结构。研究表明,导轨气浮工作面上加工浅腔、凹槽等微结构可以改善负载性能。然而,微结构微米级变化对导轨性能的影响尚不清晰。文中采用作者提出的网格自适应法,定量研究了微结构四个参数的影响,揭示了微结构变化对导轨负载性能的影响规律,并利用这些规律对微结构参数进行设计。设计方法的特点在于:通过调节浅腔参数,使承载力、刚度和转动刚度的工作点都统一起来。采用文中的设计流程和调整方法,可以在一定程度上缓解供气压力的限制和各项负载性能间的相互制约。实验结果表明,采用该方法所设计导轨的转动刚度达到2.14 × 104 Nm·rad–1,提高了69.8%。在ArF光刻机上的VS上对气浮导轨进行加速扫描实验,平均扫描加速度达到67.5 m·s–2,
达到了设计要求。
关键词: 光刻机 复合节流静压气浮导轨 微结构 工作点 转动刚度
M. NAZEMIZADEH, H. N. RAHIMI, K. AMINI KHOIY
《机械工程前沿(英文)》 2012年 第7卷 第1期 页码 23-28 doi: 10.1007/s11465-012-0304-9
This paper presents an optimal control strategy for optimal trajectory planning of mobile robots by considering nonlinear dynamic model and nonholonomic constraints of the system. The nonholonomic constraints of the system are introduced by a nonintegrable set of differential equations which represent kinematic restriction on the motion. The Lagrange’s principle is employed to derive the nonlinear equations of the system. Then, the optimal path planning of the mobile robot is formulated as an optimal control problem. To set up the problem, the nonlinear equations of the system are assumed as constraints, and a minimum energy objective function is defined. To solve the problem, an indirect solution of the optimal control method is employed, and conditions of the optimality derived as a set of coupled nonlinear differential equations. The optimality equations are solved numerically, and various simulations are performed for a nonholonomic mobile robot to illustrate effectiveness of the proposed method.
关键词: mobile robot trajectory planning nonlinear dynamic optimal control
《机械工程前沿(英文)》 2022年 第17卷 第3期 doi: 10.1007/s11465-022-0686-2
关键词: autonomous excavation unmanned electric shovel point cloud excavation trajectory planning
Room temperature liquid metal: its melting point, dominating mechanism and applications
Junheng FU, Chenglin ZHANG, Tianying LIU, Jing LIU
《能源前沿(英文)》 2020年 第14卷 第1期 页码 81-104 doi: 10.1007/s11708-019-0653-8
关键词: melting point liquid metal crystal thermodynamics molecular dynamics
《农业科学与工程前沿(英文)》 2023年 第10卷 第4期 页码 607-626 doi: 10.15302/J-FASE-2023517
As the common features of agroecosystems, ditches and ponds benefit the irrigation and drainage, as well as intercepting non-point source pollutants. However, most ditch-pond studies have been conducted in lowland areas. To test this source-sink assumption in upland areas, this study made observations on the ecological function of the ditch and pond system in a typical catchment in China. First, the changes in ponds in the catchment were analyzed using high-resolution remote sensing data. Then, the migration of agricultural pollutants in ditches and ponds were analyzed by field sampling and laboratory detection. The results showed that over the past 15 years the length of ditches in the catchment and the number of small ponds (< 500 m2) have increased by 32% and 75%, respectively. The rate of change in nutrient concentrations in the ditches and ponds were mostly from −20% to 20%, indicating ditches and ponds can be both sources and sinks for agricultural pollutants. Lastly, the contributing factors were explored and it was found that ditches and ponds are important sinks in dry season. However, during the rainy season, ditches and ponds become sources of pollutants, with the rapid drainage of ditches and the overflow of ponds in upland areas. The results of this study revealed that the ditches and ponds could be used for ecological engineering in upland catchments to balance drainage and intercept pollutants.
关键词: ditches ponds non-point source pollution mountainous areas nitrogen phosphorus
Zhi-xiang CHEN,Zhao-lin LI,Shan CAO,Fang WANG,Jie ZHOU
《信息与电子工程前沿(英文)》 2015年 第16卷 第12期 页码 1018-1033 doi: 10.1631/FITEE.1500035
关键词: Schedule refining Multi-core processor Heterogeneity Representative chip operating point
Haiyan Yang, Shangping Xu, Derek E. Chitwood, Yin Wang
《环境科学与工程前沿(英文)》 2020年 第14卷 第5期 doi: 10.1007/s11783-020-1254-9
关键词: Point-of-use water treatment Ceramic water filter Bacterial removal Surface modification Water quality
标题 作者 时间 类型 操作
fraction induced by interaction burning of tri-symmetric propane fires in open space based on weighted multi-point
Jie JI, Junrui DUAN, Huaxian WAN
期刊论文
Optimization of controlled mechanism based on generalized inverse method
YANG Jin-tang, KONG Jian-yi, XIONG He-gen, JIANG Guo-zhang, LI Gong-fa
期刊论文
Fundamental frequency and testing mode of complicated elastic clamped-plate vibration
QI Hongyuan, GUAN Yiduo
期刊论文
A multiscale-contour-based interpolation framework for generating a time-varying quasi-dense point cloud
Chu-hua HUANG,Dong-ming LU,Chang-yu DIAO
期刊论文
Solving multi-objective optimal power flow problem considering wind-STATCOM using differential evolution
Belkacem MAHDAD, K. SRAIRI
期刊论文
Trajectory planning of mobile robots using indirect solution of optimal control method in generalized point-to-point
M. NAZEMIZADEH, H. N. RAHIMI, K. AMINI KHOIY
期刊论文
Toward autonomous mining: design and development of an unmanned electric shovel via point cloud-based
期刊论文
Room temperature liquid metal: its melting point, dominating mechanism and applications
Junheng FU, Chenglin ZHANG, Tianying LIU, Jing LIU
期刊论文
DITCHES AND PONDS CAN BE THE SOURCES OR SINKS OF NON-POINT SOURCE POLLUTION: OBSERVATIONS IN AN UPLAND
期刊论文
Schedule refinement for homogeneousmulti-core processors in the presence of manufacturing-caused heterogeneity
Zhi-xiang CHEN,Zhao-lin LI,Shan CAO,Fang WANG,Jie ZHOU
期刊论文