中国科学院机构知识库网格系统: 检索

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	Effect of coupled vibration modes of dual-strip pan head on pantograph-catenary interaction 期刊论文 OAI收割 ACTA MECHANICA SINICA, 2025, 卷号: 41, 期号: 4, 页码: 9 作者: Zhang HC(张颢辰); Xu XH(许向红); Wu MZ(吴孟臻); Zhou R(周睿) \| 收藏 \| 浏览/下载：15/0 \| 提交时间：2024/11/22 Pantograph-catenary contact force Running speed Cut-off frequency Pan head degree of freedom
	Effects of Running Speed on Coupling between Pantograph of High-Speed Train and Tunnel Based on Aerodynamics and Multi-Body Dynamics Coupling 期刊论文 OAI收割 APPLIED SCIENCES-BASEL, 2021, 卷号: 11, 期号: 21, 页码: 16 作者: Ji, Zhanling; Guo, Yi; Guo, Dilong; Yang, Guowei; Liu, Yubiao \| 收藏 \| 浏览/下载：42/0 \| 提交时间：2022/01/12 coupling effect between pantograph and tunnel high-speed pantograph high-speed train running speed coupled aerodynamics and multi-body dynamics passing through a tunnel
	Effects of accessory parts topology on the aerodynamics of high-speed trains 会议论文 OAI收割 Cagliari, Sardinia, Italy , 5-8 April 2016 作者: Zhang Y(张业); Sun ZX(孙振旭); Guo DL(郭迪龙); Yang GW(杨国伟) \| 收藏 \| 浏览/下载：31/0 \| 提交时间：2018/11/08 Aerodynamics Bogies (railroad rolling stock) Electric current collection Pantographs Railroad cars Railroads Speed Topology Vehicle performance Aero dynamic performance High speed train (HST) Key factors Lift coefficient Local optimizations Running speed Total drags
	高速列车通过隧道时气动阻力特性的CFD仿真分析期刊论文 OAI收割中国铁道科学/CHINA RAILWAY SCIENCE, 2012, 卷号: 33, 期号: SUPPL.1, 页码: 33-38 作者: 王一伟; 杨国伟; 黄晨光收藏 \| 浏览/下载：76/0 \| 提交时间：2013/01/31 高速列车通过隧道 Aerodynamics 空气动力学 Computational fluid dynamics 气动阻力 Railroad cars Aerodynamic drag Railroad transportation Railroads Three dimensional computer graphics Turbulence models - CFD simulations Characteristics and mechanisms Compressible fluids High speed trains Running-in Software-based Time variations
	An embedded infrared image enhancement system based on DSP and FPGA (EI CONFERENCE) 会议论文 OAI收割 2012 International Conference on Manufacturing Engineering and Process, ICMEP 2012, April 21, 2012 - April 22, 2012, Kunming, China 作者: 收藏 \| 浏览/下载：46/0 \| 提交时间：2013/03/25 According to the disadvantage of the large noises of histogram equalization algorithm a new adaptive image enhancement algorithm is presented. First the statistical histogram of the infrared image is done. Then the threshold of plateaus Equalization is calculated and the statistical histogram is modified. Finally the bright values of the pixels of the image are changed. An embedded high speed image enhancement processing system on high performance DSP TMS320DM642 and FPGA was designed. Experimental results with real images shown that the system can improve the contrast of the infrared image limit the noises of the enhancement image and effectively enhance the infrared image the running time of the program is shorter so it can meet the requirements of real-time in the project. (2012) Trans Tech Publications.
	Aerodynamic design on China new high-speed trains 会议论文 OAI收割 1st International Workshop on High-Speed and Intercity Railways, IWHIR 2011, Shenzhen, Hong Kong, China, JULY 19-22, 2011 作者: Yang GW(杨国伟); Yang GW(杨国伟) 收藏 \| 浏览/下载：35/0 \| 提交时间：2013/02/06 Railroad cars Railroad transportation Railroad tunnels Railroads Wind effects Aerodynamic designs Aerodynamic noise Aerodynamic performance Cross-wind effects High speed trains Pressure waves Running conditions Running tests Running-in Wind tunnel experiment
	An efficient discrete particle swarm algorithm for task assignment problems (EI CONFERENCE) 会议论文 OAI收割 2009 IEEE International Conference on Granular Computing, GRC 2009, August 17, 2009 - August 19, 2009, Nanchang, China 作者: Wang C. 收藏 \| 浏览/下载：14/0 \| 提交时间：2013/03/25 Task Assignment Problems (TAPs) in distributed computer system are general NP-hard and usually modeled as integer programming discrete problems. Many algorithms are proposed to resolve those problems. Discrete particle swarm algorithm (DPS) is a newly developed method to solve constraint satisfaction problem (CSP) which has advantage on search capacity and can find more solutions. We proposed an improved DPS to solve TAP in this paper. DPS has a special operator namely coefficient multiplying speed which is designed for CSP but does not exist in other discrete problems. Thus we redefined a coefficient multiplying speed operator with probability selection. We analyzed the speed and position updating formula then we derived a refined position updating formula. Several experiments are carried out to test our DPS. Experimental results show that our algorithm has more efficient search capacity higher success rate less running time and more robust.