电子散斑干涉法测量碳钢腐蚀的面内位移
作者:
欧艺文;成纯富;叶佩;陈艳秋;龙娈珍
期刊:
武汉轻工大学学报 ,2008年27(2):28-31 ISSN:2095-7386
作者机构:
武汉工业学院工商学院电气信息工程系;湖北理工大学理学院;武汉工业学院工商学院电气信息工程系 湖北武汉430065;湖北武汉430068
关键词:
电子散斑干涉法;碳钢腐蚀;面内位移;散斑图
摘要:
运用电子散斑干涉法研究碳钢腐蚀的面内位移。采用光纤导光,减少光学系统影响,提高了散斑图质量。电子散斑干涉法不仅能定量测得腐蚀的面内位移,而且能得到腐蚀速度的大小。
语种:
中文
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地形数据对象存储组织方式及其分布策略研究
作者:
李忠民;喻占武
期刊:
测绘学报 ,2008年37(4):489-494 ISSN:1001-1595
通讯作者:
Li, Z.-M.(zhongmli@gmail.com)
作者机构:
[喻占武; 李忠民] Department of Electric Information Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[李忠民] State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China
通讯机构:
[Li, Z.-M.] D;Department of Electric Information Engineering, Wuhan Polytechnic University, China
关键词:
地形数据;基于对象存储;分布策略;矢量基对
摘要:
结合基于对象存储技术,将地形数据按平面格网划分成若干个瓦片,每个瓦片映射为一个对象存储在基于对象存储系统中。根据地形瓦片之间的位置相关性,提出一种地形数据矢量基对分布策略,将多个瓦片对象分布在多个基于对象存储设备中,充分发挥基于对象存储系统的并行性。并采用分布模板的思想来实现矢量基对分布策略,减小运算的复杂度。该策略保证查询窗口在一定范围内每台基于对象存储设备最多只被访问一次,且响应时间恒定。
语种:
中文
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汽车防雨密封性能测试与数学模型建立
作者:
周龙;谢莉;牟怿
期刊:
华中科技大学学报(自然科学版) ,2008年36(8):114-116 ISSN:1671-4512
通讯作者:
Zhou, L.(profzh@126.com)
作者机构:
[周龙; 谢莉; 牟怿] Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan 430023, China
通讯机构:
Department of Electrical and Information Engineering, Wuhan Polytechnic University, China
关键词:
汽车;防雨密封性能;经验数学模型;超声检测;最小二乘法
摘要:
采用超声波试验系统,研究汽车防雨密封性能,并研究超声波发生器与接收器距离,汽车车体缝隙尺寸与最大接收电压的关系.现场采集试验数据,并基于最小二乘法和Matlab软件,建立了可以描述汽车防雨密封性能的经验数学模型.研究结果表明:所拟合的曲线与测量数据点十分接近,拟合的效果较为理想,证明了该方法的可靠性和可行性.
语种:
中文
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新型计算机加扰器的设计
作者:
周龙;张旭
期刊:
华中科技大学学报(自然科学版) ,2008年36(9):45-47 ISSN:1671-4512
通讯作者:
Zhou, L.(profzh@126.com)
作者机构:
[周龙; 张旭] Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan 430023, China
通讯机构:
Department of Electrical and Information Engineering, Wuhan Polytechnic University, China
关键词:
信息泄漏;电磁辐射;压控振荡器;伪随机序列;加扰器
摘要:
设计了一种为防止计算机电磁辐射而造成信息泄露的新型加扰器.本加扰器采取软硬件相结合的方法产生一系列频带范围很宽的随机电磁波信号作为伪噪声信号,与计算机泄漏的有用信息混合在一起进行辐射,以达到淹没和掩盖计算机有用信息的目的,使窃密者即使截获了这一混合信号也无法从中提取有用信息.该加扰器输出的噪声信号频率范围为1~1 000 MHz,能有效覆盖计算机辐射信号的频带范围.
语种:
中文
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Study on Minimum Exact Cover Problem of Group Key Distribution
作者:
Lu, Yaling*
期刊:
DCABES 2008 PROCEEDINGS, VOLS I AND II ,2008年:918-923
通讯作者:
Lu, Yaling
作者机构:
[Lu, Yaling; Lu, YL] Wuhan Polytech Univ, Dept Elect Informat Engn, Wuhan 430070, Peoples R China.
通讯机构:
[Lu, Yaling] W;Wuhan Polytech Univ, Dept Elect Informat Engn, Wuhan 430070, Peoples R China.
会议名称:
2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会(2008 International Symposium on Distributed Computing and Applications for Business Engineering and Science)
会议时间:
2008-07-27
会议地点:
大连
会议论文集名称:
2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会(2008 International Symposium on Distributed Computing and Applications for Business Engineering and Science)论文集
关键词:
minimum exact cover problem;key distribution;secure mulficast
摘要:
To renew group key is necessary to ensure secrecy of multicast contents. However how to distribute updated key to all legitimate members efficiently is a hard problem in opening research. All existing works have complexity of O(clogn) in batch re-keying, where c is total additions/evictions. The Minimum Exact Cover Problem of Group Key Distribution is presented and studied, which can reduce the complexity down to O(1). Efficiency analysis and simulation test show that the achievement can improve efficiency of any tree-based group key management.
语种:
英文
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Management of electrical power through GSM wireless-recording system
作者:
秦实宏;卢亚玲;胡胜;赵庆
期刊:
华中科技大学学报(自然科学版) ,2007年35(12):53-55 ISSN:1671-4512
通讯作者:
Qin, S.(Qinsh@whpu.edu.cn)
作者机构:
[秦实宏; 卢亚玲; 胡胜; 赵庆] Department of Electrical and Informational, Wuhan Polytechnic University, Wuhan 430023, China
通讯机构:
Department of Electrical and Informational, Wuhan Polytechnic University, China
关键词:
短信发送;无线抄表系统;单片机控制;电量管理
摘要:
分析了目前不同抄表方式的优势与不足,提出了基于全球移动通信系统(GSM)无线远程集中抄表的方法.在每一栋楼设立一个电能控制管理中心站和一个GSM集抄终端,管理中心站单片机控制系统利用485总线对本楼的用户电能计量表实现控制和管理.设定某一集抄终端为数据服务器终端,利用GSM网,短信发送(SMS)功能实现每一GSM抄终端与数据服务器终端之间的数据通信.通过软件和硬件的设计与研究,该系统实现了购电、用电控制、远程抄表的功能.
语种:
中文
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Two MPI-Based extended Petri net models
作者:
Zeng, Wu* ;Hong, Zhiguo
期刊:
Dynamics of Continuous, Discrete and Impulsive Systems Series B: Applications and Algorithms ,2007年14:210-212 ISSN:1492-8760
通讯作者:
Zeng, Wu
作者机构:
[Zeng, Wu] Wuhan Polytech Univ, Dept Elect Informat Engn, Wuhan 430023, Peoples R China.;Chinese Acad Sci, Natl Key Lab Integrated Informat Syst Technol, Inst Software, Beijing 100080, Peoples R China.
通讯机构:
[Zeng, Wu] W;Wuhan Polytech Univ, Dept Elect Informat Engn, Wuhan 430023, Peoples R China.
关键词:
full-duplex;half-duplex;MPI;Petri net
摘要:
MPI is the one of the most popular parallel programming standards based on message-passing. It provides many kinds of point-to-point communication functions. In this paper, two MPI-Based Extended Petri Net Models are constructed to analyze the procedure during message-passing under full-duplex mode and half-duplex one respectively.
语种:
英文
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Particle swarm optimisation based inversion and numerical simulation of permeability of oilseed cakes
作者:
Zheng, Xiao* ;Lin, Guoxiang;Li, Zhi;Wang, Jingzhou
期刊:
New Zealand Journal of Agricultural Research ,2007年50(5):627-634 ISSN:0028-8233
通讯作者:
Zheng, Xiao
作者机构:
[Zheng, Xiao; Wang, Jingzhou; Lin, Guoxiang] Wuhan Polytech Univ, Dept Mech Engn, Wuhan 430023, Peoples R China.;[Li, Zhi] Wuhan Polytech Univ, Dept Elect & Informat Engn, Wuhan 430023, Peoples R China.
通讯机构:
[Zheng, Xiao] W;Wuhan Polytech Univ, Dept Mech Engn, Wuhan 430023, Peoples R China.
关键词:
inversion;numerical simulation;particle swarm optimisation;permeability;oilseed cakes
摘要:
Considering the variations of porosity and permeability of rapeseed cake and dehulled rape-seed cake during pressing, a one-dimensional partial differential equation for now of fluids through porous media of rapeseed cake and dehulled rapeseed cake was developed based upon the theory of fluid-solid interaction, in which the cake was deformable and the permeability was variable. An analytic solution for the problem of fluid-solid interaction of one-dimensional steady flow of fluids through porous media was proposed. Permeability parameters of rapeseed cake and dehulled rapeseed cake were identified by using improved particle swarm optimisation. Numerical simulations of seepage rates, distribution of pore pressure and permeability in the cake were made. The results indicated that the distribution of pore pressure and permeability in the cake were nonlinear, an exponential function simulated the relationship between permeability and effective stress well, and the permeability of rapeseed cake was greater than that of dehulled rapeseed cake. © 2007 Taylor & Francis Group, LLC.
语种:
英文
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二维小波变换在粮虫图像处理中的应用
作者:
周龙;牟怿
期刊:
华中科技大学学报(自然科学版) ,2007年35(8):24-26 ISSN:1671-4512
通讯作者:
Zhou, L.(profzh@126.com)
作者机构:
[牟怿; 周龙] Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan 430023, China
通讯机构:
Department of Electrical and Information Engineering, Wuhan Polytechnic University, China
关键词:
粮虫图像;图像处理;小波变换;边缘检测
摘要:
提出了用小波变换检测储粮害虫图像边缘的方法,这种方法通过对二维小波变换图像局部极大值的检测得到图像的边缘信息.计算表明,将二维小波变换应用于储粮害虫的图像去噪和边缘检测,不仅可以保留图像的边缘特征,视觉效果好,还可以得到较清晰的粮虫特征图像,为粮虫图像特征提取打下了良好的基础.
语种:
中文
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基于超声波检测的汽车防雨密封性试验研究
作者:
周龙;牟怿;谢莉
期刊:
华中科技大学学报(自然科学版) ,2007年35(8):80-82 ISSN:1671-4512
通讯作者:
Zhou, L.(profzh@126.com)
作者机构:
[牟怿; 周龙; 谢莉] Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan 430023, China
通讯机构:
Department of Electrical and Information Engineering, Wuhan Polytechnic University, China
关键词:
汽车防雨密封性;淋雨试验;超声波检测
摘要:
针对汽车防雨密封性淋雨试验方法中存在的主要问题,提出了一种基于超声波检测的试验方法,采用超声波发生器作为信号源置于车体内,利用检测装置将超声振动波转换成电压信号输出,经计算机处理分析后可自动评定汽车的防雨密封性能.研究结果表明,该方法可节省试验时间、简化试验步骤、降低试验成本,对提高营运汽车运行的安全性和舒适性、实现完整的全自动汽车综合性能检测系统可起到积极的推动作用.
语种:
中文
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Application of particle swarm algorithms to optimization of chemical production process
作者:
Chang, Xiao-Ping;Qin, Jian-Hua;Lou, Yigong
期刊:
石油化工高等学校学报 ,2007年20(1):90-93 ISSN:1006-396X
通讯作者:
Chang, X.-P.(changxp1212@yahoo.com.cn)
作者机构:
武汉工业学院电气信息工程系,湖北武汉,430023;武汉化工学院化工系,湖北武汉,430070;Carnegie Institution of Washington, 260 Panama Street,Stanford,CA94305 USA;[Chang, Xiao-Ping] 武汉工业学院;[Lou, Yigong] 华盛顿卡内基学院
通讯机构:
Department of Electrical and Information Engineering, Wuhan Polytechnic University, China
关键词:
苯-甲苯;闪蒸过程;粒子群算法;优化仿真
摘要:
对基本粒子群算法进行了智能化改进,并运用改进粒子群算法和MATLAB语言,对化工生产过程中的苯-甲苯闪蒸过程进行了优化仿真计算。仿真结果表明,在有效地调整温度、压力及分流系数的条件下,使得气相产物中苯的产量达到最大,实现了苯-甲苯闪蒸过程的最优化,同时也证明了粒子群算法可以有效地解决化工生产过程中的优化问题。
语种:
中文
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基于蚁群算法的光学膜系初始结构优化设计
作者:
李智;秦岭;秦建华
期刊:
光电工程 ,2007年34(1):65-68+79 ISSN:1003-501X
通讯作者:
Li, Z.(lizhihb@yahoo.com.cn)
作者机构:
[秦岭; 李智] Department of Electrical and Information, Wuhan Polytechnic University, Wuhan 430023, China;[秦建华] School of Material Engineering, Wuhan Institute of Technology, Wuhan 430070, China
通讯机构:
[Li, Z.] D;Department of Electrical and Information, Wuhan Polytechnic University, China
关键词:
光学膜系;蚁群算法;优化设计;计算机模拟
摘要:
本文在分析和研究蚁群算法原理、算法实现过程的基础上,针对多膜料设计,以1200~1600nm波段内带通滤波器,1200~1600nm波段内截止滤波器、600~1000nm波段内截止滤波器和400~800nm波段内截止滤波器等4个滤波琴实例为优化对象,以理论反射率和实际反射率之差最小为目标函数,采用蚁群算法和MATLAB语言编制了膜系初始结构优化设计的仿真计算程序,计算机仿真结果准确,证明了蚁群算法应用于膜系设计的可行性.
语种:
中文
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灰色理论在故障诊断参量有效性分析中的应用
作者:
周龙;陈绵云
期刊:
华中科技大学学报(自然科学版) ,2007年35(7):105-106 ISSN:1671-4512
通讯作者:
Zhou, L.(profzh@126.com)
作者机构:
[周龙] Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[陈绵云] Department of Control Science and Information Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
通讯机构:
Department of Electrical and Information Engineering, Wuhan Polytechnic University, China
关键词:
电气设备;状态监测;故障诊断;灰关联分析
摘要:
为了选取合理的电气设备监测和诊断参量,将灰关联分析应用于参量的分析中.先确定参考序列和比较序列,计算关联度,然后确定合理的参量.并以氧化锌避雷器(MOA)的绝缘诊断为实例,经计算比较表明,采用阻性泄漏电流基波峰值作为参量来监测和诊断MOA的绝缘状态是合理的.
语种:
中文
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基于粒子群算法的空间太阳能热动力系统优化设计
作者:
李智;常晓萍;秦建华
期刊:
机械工程学报 ,2006年42(9):195-200 ISSN:0577-6686
通讯作者:
Li, Z.(lizhihb@yahoo.com.cn)
作者机构:
[常晓萍; 李智] Department of Electrical and Information Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[秦建华] School of Mechanical Engineering, Wuhan Institute of Technology, Wuhan 430070, China
通讯机构:
Department of Electrical and Information Engineering, Wuhan Polytechnic University, China
关键词:
空间站;太阳能;热动力系统;粒子群算法;优化设计
摘要:
太阳能热动力系统是空间站的重要组成部分.为有效降低太阳能发电系统的发射质量,在分析空间太阳能热动力系统的工作原理、粒子群算法的原理及实现的基础上,采用粒子群算法对太阳能热动力系统的发射质量进行了优化仿真设计.在保证压缩机的进口压力、压缩机的进口温度、压缩机的压缩系数、换热管的数目、换热管的直径、回热器的回热度、循环工质流道高度、热管直径、热管长度及能量转换单元的转速等独立变量满足系统要求的前提下,使得发射质量最小,从而有效地节约发射、管理和后续支持费用.将粒子群算法的优化结果通过遗传变异修正后,其结果要好于基本粒子群算法和遗传算法结果.
语种:
中文
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The product and tensor product of two doubly even codes
作者:
刘宏伟;曾武
作者机构:
[刘宏伟; 曾武] School of Mathematics and Statistics, Central China Normal University, Wuhan 430079;[刘宏伟; 曾武] Department of Electrical and Information Engineering, Wuhan Polytechnic University, 430023
会议名称:
第十一届全国青年通信学术会议
会议时间:
2006-07
会议地点:
中国四川绵阳
会议论文集名称:
2006通信理论与技术新进展——第十一届全国青年通信学术会议论文集
关键词:
doubly even code;product of codes;tensor product of codes;linear code
摘要:
<正>Let C1 and C2 be two linear doubly even codes over finite field F, where F’s characteristic is 2. This paper proves that the two doubly even codes’ product and their tensor product are also doubly even codes.
语种:
中文
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A self-adjusted genetic algorithm based on VOD cluster
作者:
Wu Zeng* ;Wanneng Shu;Xiaojing Cao
期刊:
Dynamics of Continuous, Discrete and Impulsive Systems Series B: Applications and Algorithms ,2006年13:827-830 ISSN:1492-8760
通讯作者:
Wu Zeng
作者机构:
[Wu Zeng] Wuhan Polytech Univ, Dept Elect Informat Engn, Wuhan 430023, Peoples R China.;Hua Zhong Normal Univ, Dept Comp Sci, Wuhan 430079, Peoples R China.;Jinan Univ, Coll Informat Sci & Technol, Guangzhou 510632, Guangdong, Peoples R China.
通讯机构:
[Wu Zeng] W;Wuhan Polytech Univ, Dept Elect Informat Engn, Wuhan 430023, Peoples R China.
摘要:
The users' need for a mass of synchronization requests cause the appearance of more and more choke point at the end of the server. At present, the usual solution is to apply load balanced technology. This paper analyzes and explores the load balanced technology of VOD cluster server, and puts forward a self-adjusted genetic algorithm. The experimental results are perfect.
语种:
英文
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Application of water solute coupled model to transportation of chemicals and pesticides on unsaturated zone pollution
作者:
王惠芸;梁冰;刘磊;薛涛
期刊:
辽宁工程技术大学学报(自然科学版) ,2006年25(SUPPL.):117-119 ISSN:1008-0562
通讯作者:
Wang, H.-Y.
作者机构:
武汉工业学院,电气信息工程系,湖北,武汉,430023;辽宁工程技术大学,力学与工程科学系,辽宁,阜新,123000;[王惠芸; 薛涛] 武汉工业学院;[梁冰; 刘磊] 辽宁工程技术大学
通讯机构:
Department of Electrical and Information Engineering, Wuhan Polytechnic University, China
关键词:
吸附-解吸;土壤水分含量;农药污染;水质耦合模型;包气带
摘要:
在综合考虑农药类污染物在非饱和土壤环境中的水动力弥散、吸附解吸及微生物降解等环境行为的前提下,建立土壤中农药类化学污染物迁移的耦合动力学模型,模型中充分考虑了溶质在土壤固体骨架上非平衡吸附作用.并对农药阿特拉津在土壤中的运移过程进行了数值模拟,对模型中的几个重要参数(含水率、吸附速率和水动力弥散系数)进行了灵敏度分析:结果表明.土壤水分含量变化对农药类污染物质在环境介质中迁移转化起着重要作用。这对于定量化分析农药类污染物在土壤中迁移对地下水污染的潜在性影响提供了可靠的理论根据,同时可为现场农药环境污染评价提供技术支持。
语种:
中文
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Trend relational analysis and grey-fuzzy clustering method
作者:
Chen, Zhijie* ;Chen, Weizhen;Chen, Qile;Chen, Mian-Yun
期刊:
PROCEEDINGS OF THE SIXTH SIAM INTERNATIONAL CONFERENCE ON DATA MINING ,2006年2006:234-245
通讯作者:
Chen, Zhijie
作者机构:
[Chen, Zhijie] Wuhan Univ Sci & Engn, Sch Econ & Management, Wuhan 430073, Peoples R China.;[Chen, Mian-Yun; Chen, Weizhen] Huazhong Univ Sci & Technol, Dept Control Sci & Engn, Wuhan 430074, Peoples R China.;[Chen, Weizhen] Wuhan Polytech Univ, Dept Informat & Elect Engn, Wuhan 430023, Peoples R China.;[Chen, Qile] Wuhan Univ Sci & Engn, Dept Comp Sci, Wuhan 430073, Peoples R China.
通讯机构:
[Chen, Zhijie] W;Wuhan Univ Sci & Engn, Sch Econ & Management, Wuhan 430073, Peoples R China.
关键词:
Trend relational analysis;grey-fuzzy clustering method;grey systems;fuzzy systems
摘要:
In this paper, the latest researches on trend relational analysis and grey-fuzzy clustering method are presented. Grey systems and fuzzy systems are found everywhere. The researched results can open new prospects for the development and application of systems methodology to data mining.
语种:
英文
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DDS芯片AD9854及其在扩频通信中的应用
作者:
胡淑均
期刊:
黄冈职业技术学院学报 ,2006年8(01):86-89+36 ISSN:1672-1047
作者机构:
华中科技大学水电与数字化工程学院,湖北,武汉,430074;武汉工业学院电气信息工程系,湖北,武汉,430023;[胡淑均] 华中科技大学
关键词:
扩频通信;直接序列扩频;跳变频率
摘要:
介绍了AD9854的结构及工作模式,并对AD9854芯片在扩频通信的直接序列扩频工作方式和跳变频率工作方式中的应用进行了研究。
语种:
中文
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Performance limitations in the simultaneous presence of plant uncertainty and control energy constraint
作者:
Zhou, Jin* ;Wang, Jianguo;Cao, Guangyi
期刊:
Proceedings of the World Congress on Intelligent Control and Automation (WCICA) ,2006年1:681-684
通讯作者:
Zhou, Jin
作者机构:
[Wang, Jianguo; Zhou, Jin; Cao, Guangyi] Wuhan Polytech Univ, Dept Elect Informat Engn, Wuhan 430023, Peoples R China.
通讯机构:
[Zhou, Jin] W;Wuhan Polytech Univ, Dept Elect Informat Engn, Wuhan 430023, Peoples R China.
会议名称:
6th World Congress on Intelligent Control and Automation
会议时间:
JUN 21-23, 2006
会议地点:
Dalian, PEOPLES R CHINA
会议主办单位:
Wuhan Polytech Univ, Dept Elect Informat Engn, Wuhan 430023, Peoples R China.
关键词:
Control energy constraint;Performance limitations;Plant uncertainty
摘要:
This paper has investigated performance limitations in the case that plant uncertainty and control effort are to be considered jointly. Firstly, a average cost function of the tracking error and the plant input energy over a class of stochastic model errors is presented. Then, we design a control law that minimizes the average performance and study optimal tracking performance for linear feedback control systems in the simultaneous presence of plant uncertainty and control energy constraint. The results can be used to evaluate optimal average tracking performance and control energy in practical control system designs. ©2006 IEEE.
语种:
英文
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