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Science china(Information Sciences) 2010年第12期53卷 2687-2695页

作者： DAI HuanYao ,WANG XueSong,LI YongZhen,LUO Jia & XIAO ShunPing college of Electronic Science and engineering,National university of Defense Technology,changsha 410073,china 1. college of Electronic Science and engineering National University of Defense Technology Changsha 410073 China

Polarimetry is an important trend in the development of modern *** technique for measuring polarization scattering property of the target is the key for polarization radar realization,but it faces challenges in ***,a new theoretical model for target scattering characteristic measurement radar,named orthogonal polarization binary array radar(OPBAR),is *** spatial polarization characteristics of the radar antennas are addressed.A new polarimetric algorithm that needs only one channel is *** polarization scattering matrix measurement can be implemented by processing received signal in a short time interval while antenna’s beam mechanically scans the *** compactness field microwave dark room experiment,measurments of dynamic broadband polarimetry on OPBAR have been conducted and the validity of research work has been *** result is helpful to exploiting the capability of current radar systems and enhancing their information acquiring and processing capacity.

关键词： orthogonal polarization binary array radar(OPBAR) spatial polarization characteristics radar target signatures polarization scattering matrix polarization measurement mechanical scanning

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基于事件记录的塞拉门故障诊断方法

计算机工程与应用 2003年第16期39卷 219-220,232页

作者：刘坚于德介湖南大学机械与汽车工程学院长沙410082

提出了一种基于事件记录的塞拉门故障诊断方法,该方法在诊断知识数字化的基础上,结合知识检索技术实现了塞拉门故障诊断的计算机化,从而较好地解决了列车塞拉门系统检修工作中一直存在的故障部位查找困难和故障隐患难以排除的问题。应... 详细信息

提出了一种基于事件记录的塞拉门故障诊断方法,该方法在诊断知识数字化的基础上,结合知识检索技术实现了塞拉门故障诊断的计算机化,从而较好地解决了列车塞拉门系统检修工作中一直存在的故障部位查找困难和故障隐患难以排除的问题。应用该方法在塞拉门故障的现场诊断中获得了满意的效果。

关键词：事件记录知识检索故障诊断塞拉门

DECOUPLED MODEL FOR FLATNESS CONTROL IN 4-H CVC COLD ROLLING MILLS

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中国有色金属学会会刊：英文版 1998年第4期8卷 185-187页

作者： Zhong Jue and Chen Jie college of mechanical and Electrical engineering, Central South university of Technology, changsha 410083, P. R. china

ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｐｒｅｃｉｓｅｃｏｎｔｒｏｌｏｆｒｏｌｇａｐｉｎ４ｈＣＶＣｍｉｌｓｉｓｐａｒｔｉｃｕｌａｒｌｙｄｉｆｉｃｕｌｔｄｕｅｔｏｔｈｅｃｏｍｐｌｅｘｉｎｔｅｒａｃｔｉｏｎｓｂｅｔｗｅｎｗｏｒｋ... 详细信息

ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｐｒｅｃｉｓｅｃｏｎｔｒｏｌｏｆｒｏｌｇａｐｉｎ４ｈＣＶＣｍｉｌｓｉｓｐａｒｔｉｃｕｌａｒｌｙｄｉｆｉｃｕｌｔｄｕｅｔｏｔｈｅｃｏｍｐｌｅｘｉｎｔｅｒａｃｔｉｏｎｓｂｅｔｗｅｎｗｏｒｋｒｏｌｓｈｉｆｔｉｎｇａｎｄｂｅｎ...

关键词： decoupled model gage and shape control cold rolling

Effect of Curing Procedure on the Properties of Copper-Powder-Filled Conductive Adhesives

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Journal of Wuhan university of Technology(Materials Science) 2008年第3期23卷 323-325页

作者：郑小玲游敏 college of mechanical and Material engineering China Three Gorges University

By means of testing the shear strength with single lap joint, measuring electrical resistivity for cured products and the curing strain with strain gauges, the effect of cure parameters on the properties of HT1012 conductive adhesive filled with copper powder was investigated, and the residual stress in the conductive adhesives was also estimated. The experimental results show that the properties such as shear strength of the adhesives, electrical resistivity of products as well as the residual stress of cured HT 1012 copperfitted conductive adhesive were evidently affected by curing temperature and time. The diagrams of scanning electron microscopy （SEM） and Fourier transform infrared （FT-IR） were also used to determine the properties. The higher mechanical property was achieved under the condition of curing the adhesive 3 h at 60 ℃ as the density of the hydrogen links or linkages existed in the adhesive was relatively higher and the lower electrical resistivity occurred at 80 ℃.

关键词： conductive adhesives epoxy copper-powder-filled curing procedure

OPTIMAL CONTROL APPLIED IN automatic CLUTCH ENGAGEMENTS OF VEHICLES

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Chinese Journal of mechanical engineering 2004年第2期17卷 280-283页

作者： Sun Chengshun Zhang Jianwu School of mechanical and Power engineering,Shanghai Jiaotong university,Shanghai 200030, china School of mechanical and Power engineering Shanghai Jiaotong University Shanghai 200030 China Department of Science and Technology Studies University College London WC1E 6BT UK

Start-up working condition is the key to the research of optimal engagementof automatic clutch for AMT. In order to guarantee an ideal dynamic performance of the clutchengagement, an optimal controller is designed by considering throttle angle, engine speed, gearratio, vehicle acceleration and road condition. The minimum value principle is also introduced toachieve an optimal dynamic performance of the nonlinear system compromised in friction plate wearand vehicle drive quality. The optimal trajectory of the clutch engagement can be described in theform of explicit and analytical expressions and characterized by the deterministic and accuratecontrol strategy in stead of indeterministic and soft control techniques which need thousands ofexperiments. For validation of the controller, test work is carried out for the automated clutchengagements in a commercial car with an traditional mechanical transmission, a hydraulic actuator, agroup of sensors and a portable computer system. It is shown through experiments that dynamicbehaviors of the clutch engagement operated by the optimal control are more effective and efficientthan those by fuzzy control.

关键词： automatic clutch Optimal control Nonlinear system dynamics

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基于生物信息学方法发现潜在药物靶标

生物化学与生物物理进展 2011年第1期38卷 11-19页

作者：刘伟谢红卫国防科学技术大学机电工程与自动化学院自动控制系长沙410073

药物靶点通常是在代谢或信号通路中与特定疾病或病理状态有关的关键分子.通过绑定到特定活动区域抑制这个关键分子进行药物设计.确定特定疾病有关的靶标分子是现代新药开发的基础.在药物靶标发现的过程中,生物信息学方法发挥了不可替代... 详细信息

药物靶点通常是在代谢或信号通路中与特定疾病或病理状态有关的关键分子.通过绑定到特定活动区域抑制这个关键分子进行药物设计.确定特定疾病有关的靶标分子是现代新药开发的基础.在药物靶标发现的过程中,生物信息学方法发挥了不可替代的重要的作用,尤其适用于大规模多组学数据的分析.目前,已涌现了许多与疾病相关的数据库资源,基于生物网络特征、多基因芯片、蛋白质组、代谢组数据等建立了多种生物信息学方法发现潜在的药物靶标,并预测靶标可药性和药物副作用.

关键词：药物靶标网络特征基因芯片蛋白质组学

A CONTROVERTIBLE EQUATION IN “VIBRATION PROBLEMS IN engineering” BY TIMOSHENKOS

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中国有色金属学会会刊：英文版 1998年第4期8卷 188-190页

作者： Zhang Huailiang and Li Dengling college of mechanical and Electrical engineering, Central South university of Technology, changsha 410083, P. R. china Wang Peiwen Department of mechanical engineering, Wuhan university of Metallurgy Technology, Wuha

ＩＮＴＲＯＤＵＣＴＩＯＮ“ＶＩＢＲＡＴＩＯＮＰＲＯＢＬＥＭＳＩＮＥＮＧＩＮＥＥＲＩＮＧ（４ｔｈＥｄ）”，ｗｒｉｔｅｎｂｙＴｉｍｏｓｈｅｎｋｏＳ，ａｎＡｍｅｒｉｃａｎｍｅｃｈａｎｉｃｓｐｒｏｆｅｓｏｒ，ｉｓａｆａｍｏ... 详细信息

ＩＮＴＲＯＤＵＣＴＩＯＮ“ＶＩＢＲＡＴＩＯＮＰＲＯＢＬＥＭＳＩＮＥＮＧＩＮＥＥＲＩＮＧ（４ｔｈＥｄ）”，ｗｒｉｔｅｎｂｙＴｉｍｏｓｈｅｎｋｏＳ，ａｎＡｍｅｒｉｃａｎｍｅｃｈａｎｉｃｓｐｒｏｆｅｓｏｒ，ｉｓａｆａｍｏｕｓｗｏｒｋａｂｏｕｔｖｉｂｒａｔ...

关键词： vibation problems engineering controvertible problem

Unsteady lubricating modeling of inlet zone in metal rolling processes

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Science china Mathematics 2001年第S1期44卷 49-57页

作者： MAO Mingzhi TAN Jianping college of mechanical & Electrical engineering, Central South university, changsha 410083, china Cent S Univ Coll Mech & Elect Engn Changsha 410083 Peoples R China

In this paper an unsteady lubricating model of inlet zone in metal rolling has been es-tablished. The simulation computations show that for the variation amplitude of the inlet filmthickness, the variation of the inlet angle contributes the largest, the surface mean speed thesecond and the back tension stress the least. The higher the input frequency, the smaller the am-plitude output of the inlet film thickness would be. For a sinusoidal input, the inlet film thicknessvaries periodically but is not a sine wave because the system is not linear.

关键词： metal rolling unsteady state lubrication inlet film thickness

QUASI-3D DYNAMIC FINITE ELEMENT MODEL FOR ROLLING MILLS

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QUASI-3D DYNAMIC FINITE ELEMENT MODEL FOR ROLLING MILLS

2001亚太振动会议

作者： WUYun-Xin HUAGuangjun DUANJi-An ZHONGJue college of mechanical & Electrical engineering Central-South university changsha hunan china 410083

＜正＞ A quasi-3D dynamic finite element （FE） model for striprolling mills is developed, which uses beam, stiffness,and lumped mass elements, instead of 3D body *** proposed quasi-3D FE model resolves problemsarising in 2D models, such as losing bending modes ofthe rollers. Meanwhile, the proposed model also avoidshuge meshing and computational efforts needed with 3Dbody models. Therefore, it is feasible to make one’s ownFE program code and to integrate it to a model updatingsoftware, so as to update the initial quasi-3D modelsaccording to measuring data.

关键词：

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地铁轮轨噪声的统计能量分析

铁道机车车辆 2009年第5期29卷 60-63页

作者：罗斌肖友刚中南大学机电工程学院湖南长沙410075 中南大学交通运输工程学院湖南长沙410075

采用统计能量分析法,建立了地铁轮轨噪声预测模型,预测了某地铁的轮轨噪声,得出了如下结论：当地铁以60 km/h的速度运行时,轮轨总辐射噪声主要分布在中心频率为500~4000 Hz的一个较宽的频率范围内,其中钢轨辐射噪声主要分布在中心频率为... 详细信息

采用统计能量分析法,建立了地铁轮轨噪声预测模型,预测了某地铁的轮轨噪声,得出了如下结论：当地铁以60 km/h的速度运行时,轮轨总辐射噪声主要分布在中心频率为500~4000 Hz的一个较宽的频率范围内,其中钢轨辐射噪声主要分布在中心频率为500~4000 Hz的较宽频率范围内;车轮辐射噪声主要分布在中心频率为1250~4000 Hz的中、高频范围内。从二者对总噪声的贡献来看,钢轨是主要的辐射源,车轮次之。轮轨、钢轨、车轮的辐射总声压级分别为86、85、81 dBA。

关键词：地铁轮轨噪声统计能量分析