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Research and Development of Growth Design System for mechanical Products

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武汉理工大学学报 2006年第S1期28卷 90-95页

作者： YANG Bo1,ZE Xiangbo1,YANG Tao2,CUI Weihua1,LIU Luning1 (1.college of mechanical engineering,Jinan university,Jinan 250022,china 2.Singapore Technologies Dynamics Pte Ltd,Singapore) college of mechanical engineering Jinan UniversityJinan 250022China Singapore Technologies Dynamics Pte Ltd Singapore

By applying genetic engineering methodology into the incremental product growth design,a generic structural design approach is put forward,as well as an intelligent evolution strategy of the product units growth,which is based on the multilevel Decomposition and Reconstruction of product gene. To guarantee a successful transformation from functional requirement to geometry constraints between parts in the incremental growth design of mechanical product,the integrated design method incorporates the design requirements and assembly perspective into product genetic information. The mathematical model of state transition during incremental design process are given at first,based on which product can grow step by step from functional requirement to the final geometrical product structure automatically. And then,to quantify the measurement of assembly efficiency,a mathematical model as well as a technology to quantify assembly constraints was developed by application of some fuzzy logic algorithms. Finally,examples have been proved that the approach is promising.

关键词： growth design automatic design functional decomposition assemblability

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一个微生物细胞图像自动判读系统的实现

计算机工程与应用 2002年第7期38卷 125-126,158页

作者：刘相滨邹北骥阳波湖南师范大学图像识别和计算机视觉研究所长沙410081 湖南大学计算机与通信学院长沙410082

不同类的微生物细胞其形态各异,这给微生物细胞图像自动判读系统的实现带来了很大的困难。该文介绍了一个自动判读系统的实现,该系统包含丰富的图像分析处理算法函数,提供了非常灵活的处理宏定义,能够对细胞图像自动分类,然后根据其所... 详细信息

不同类的微生物细胞其形态各异,这给微生物细胞图像自动判读系统的实现带来了很大的困难。该文介绍了一个自动判读系统的实现,该系统包含丰富的图像分析处理算法函数,提供了非常灵活的处理宏定义,能够对细胞图像自动分类,然后根据其所属的类调用相应的判读宏完成判读。

关键词：微生物细胞图像自动判读系统生物医学图像处理

Research on a New Kind of ES Based on XML/Web

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厦门大学学报（自然科学版） 2002年第S1期41卷 266-267页

作者： LAI Chao-an, SUN Yan-ming, HUANG Ping, ZHENG Shi-xiong (college of Machine engineering, South china university of Technology, Guangzhou 510640, china)

A new knowledge acquisition methodology for mechani ca l knowledge Web was put forward in this paper after discussed the backwards of k nowledge acquisition method for technical document: natural language understandi ng and ES. A kind of united knowledge representation model, which can include ma ny sorts of knowledge carriers and knowledge representation methods, was advance d firstly, and then mechanical knowledge XML tag was designed based on it. Thus, knowledge still stay in primary electronic document, and knowledge document bec ome document knowledge base based on Web with hierarchy. A corresponding method was advanced and a knowledge acquisition system was developed. It can understand user’s questions in natural language and then find the relevant knowledge and execute reasoning and answer the user’s questions according the result of reaso ning and realized the automatic knowledge acquisition from Web knowledge documen t.

关键词： knowledge acquisition knowledge representation XML WWW

基于EMD和奇异值分解技术的滚动轴承故障诊断方法

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数据采集与处理 2004年第2期19卷 204-209页

作者：程军圣于德介杨宇湖南大学机械与汽车工程学院长沙410082

提出了基于 EMD( Empirical mode decomposition)和奇异值分解技术的滚动轴承故障诊断方法。采用EMD方法将滚动轴承振动信号分解成若干个基本模式分量 ( Intrinsic mode function,IMF)之和 ,并形成初始特征向量矩阵。然后对初始特征向... 详细信息

提出了基于 EMD( Empirical mode decomposition)和奇异值分解技术的滚动轴承故障诊断方法。采用EMD方法将滚动轴承振动信号分解成若干个基本模式分量 ( Intrinsic mode function,IMF)之和 ,并形成初始特征向量矩阵。然后对初始特征向量矩阵进行奇异值分解得到矩阵的奇异值 ,将其作为滚动轴承振动信号的状态特征向量 ,通过建立 Mahalanobis距离判别函数判断滚动轴承的工作状态和故障类型。实验数据的分析结果表明 ,本文方法能有效地应用于滚动轴承故障诊断。

关键词：滚动轴承故障诊断 EMD 奇异值分解技术模式分量傅里叶变换

Development of Multilevel Flow Model for Power Plant Process Fault Diagnosis

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Development of Multilevel Flow Model for Power Plant Process...

A Method of Super-resolution Image Restoration Based on Separation

2009中国控制与决策会议

作者： Gu Xiaojun~(1,2),Yang Shixi~1,Zhao Yun~2,Qian Suxiang~2 1.college of mechanical and Energy engineering,Zhejiang university,Hangzhou 310027,china 2.college of mechanical engineering,Jiaxing university,Jiaxing 314001,china

＜正＞This paper presents the development of Multilevel Flow Modeling（MFM）—a modeling method in means-end and part-whole way,for automatic real time fault diagnosis of power plant process *** MFM decomposes the complex plant process from the main goal to each component at multiple levels to represent the contribution of each component to the whole system to make clear how the main goal of the system is *** plant process is described abstractly in function level by mass,energy and information flows,which represent the interaction between different components and enable the causal reasoning between functions according to the flow ***,in the abnormal status,a goal-function-component oriented fault diagnosis can be performed with the model at a very quick speed and abnormal alarms can be fully explained by the reasoning relationship of the model.

关键词： multilevel flow model(MFM) fault diagnosis human-machine interface system

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A Method of Super-resolution Image Restoration Based on Sepa...

Study on the Matching Control between Constant Power and Variable Power of Hydraulic Excavator

第二十六届中国控制会议

作者： Zhang Jian 1,2,Fan Xiaoping 2 ,Huang Cailun 1,2 1.hunan Provincial Key Laboratory of Health Maintenance for mechanical Equipment,hunan university of Science and Technology,Xiangtan 411201,P.R.china2.college of Information Science and engineering,Central South university,changsha 410083,P.R.china

According to the optical image,the layered model for image degradation is established on the basis of imaging *** key factors （diffraction effect and down-sample etc.） resulting in the low resolution are pointed out.A method of super-resolution image restoration based on separation is proposed and the algorithm of ally-template is *** separation method reduces the complexity of *** experiment proves the effectiveness of the proposed algo- rithm.

关键词： Image processing Super-resolution POCS Down-sample Separate method Ally-template

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Study on the Matching Control between Constant Power and Var...

第五届流体传动与控制国际会议

作者： He Qinghua Hao Peng~* Zhang Daqing Zhang Xinhai Department of Construction Machinery Design and Control college of mechanical & Electrical engineering Central South university Yuelu Mountain.changsha hunan 410083 china

＜正＞According to the variety and complexity of the load,a method of the matching control between constant power and variable power is put out based on the analysis of the diesel *** energy saving controller is used in this paper to make the diesel and the pump work according to the *** the end, experiment is produced on the hydraulic excavator. From the experimental result,the fluctuant bound is dwindled,the usage ratio of the fuel and the efficiency of the whole machine are *** can get about 5% of fuel saving by this control strategy.

关键词： hydraulic excavator variable power power matching energy saving

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分布式战场态势可视化系统研究

系统仿真学报 2008年第S1期20卷 316-318,322页

作者：李艳黄柯棣国防科技大学机电工程与自动化学院长沙410073 炮兵防空兵装备技术研究所北京100012

在明确仿真需求的基础上,利用可视化技术,实现对战场态势的实时直观表示,对于理解仿真过程具有重要作用。针对目前仿真应用系统中态势可视化普遍存在的通用性、可重用性较差的问题,提出了解决方案——通用战场态势可视化系统,并通过初... 详细信息

在明确仿真需求的基础上,利用可视化技术,实现对战场态势的实时直观表示,对于理解仿真过程具有重要作用。针对目前仿真应用系统中态势可视化普遍存在的通用性、可重用性较差的问题,提出了解决方案——通用战场态势可视化系统,并通过初步实践证明了可行性。

关键词：战场态势可视化环境信息系统军事概念模型可重用

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碳纳米管增强镍磷基复合镀层研究

物理学报 2004年第2期53卷 531-536页

作者：陈传盛陈小华李学谦张刚易国军张华胡静湖南大学材料科学与工程学院长沙410082

对CVD方法制备的碳纳米管进行表面改性处理 ,然后在液相中分散 ,利用化学共沉积方法形成碳纳米管镍磷基复合镀层 ,研究了碳纳米管表面改性后的红外谱、碳纳米管复合镀层的表面形貌、硬度及摩擦学行为 .结果表明 :碳纳米管的加入明显地... 详细信息

对CVD方法制备的碳纳米管进行表面改性处理 ,然后在液相中分散 ,利用化学共沉积方法形成碳纳米管镍磷基复合镀层 ,研究了碳纳米管表面改性后的红外谱、碳纳米管复合镀层的表面形貌、硬度及摩擦学行为 .结果表明 :碳纳米管的加入明显地提高镍磷复合镀层的硬度和改善了镍磷复合镀层的摩擦性能 .硬度达到 94 6HV ,2 0N载荷时摩擦系数为 0 7,增至 80N时降为 0 6 ;相同条件下与传统耐磨材料SiC增强的镍磷基复合镀层相比。

关键词：碳纳米管表面改性复合镀层摩擦行为镍磷基摩擦系数改性行为