基于项目的制造网格服务响应机制的研究

为了研究制造网格系统中的服务的生存态和生命周期，定义了制造网格服务和制造服务域，分析了制造服务域在制造网格环境中的三种生存态，提出了基于项目的制造网格服务响应流程，分析了响应过程中所需的基础设施建设条目，提出了以项目为基本运营模式的制造网格系统架构。以某模具的制造过程为实例对制造网格服务响应流程进行了应用说明。     

基于holon的模具特许连锁网格化制造系统的物流系统研究

分析了模具特许连网格化制造系统的特点以及对其物料供应系统的功能要求,运用holonlc控制系统的原理对物流系统建模,参考PROSA模型的思想方法,提出了基于holon的物流系统基本模型（Holonic Loglstlc System,HLS）,HLS包含3类基本的物流holon：物流资源holon、物流任务holon和物流规范holon.接着运用HLS基本模型对特许连锁制造体系的物流系统进行具体的实例化分析,最后用UML语言对其运作机制作了描述和说明.     

基于制造网格平台的模具制造资源共享机制研究

介绍了制造网格的基本概念，分析了中国模具制造企业制造资源利用现状以及对信息化的需求，提出了基于制造网格平台的模具制造资源共享机制。对中小模具企业里的各种与模具全生命周期有关的资源进行分类、规划和整合，以制造网格为平台构建了制造服务协同制造网络。通过对模具制造资源进行网格化封装，实现了资源的协同共享，为中国模具制造企业实现信息化和网格化制造提供了理论支撑。     

模具制造中小企业的现状分析及对策

本文针对华南地区的广大模具制造中小企业的现状进行了分析,并对目前信息化的现状进行了综述,提出了模具中小企业未来发展的一种新的制造模式——网格制造。     

网格支持下的服务型制造模式研究

服务型制造是最近由中国学者提出的一种新的先进制造模式,是服务业与制造业融合的产物。论述了服务型制造模式的内涵、需要解决的关键问题;基于网格技术及网格制造的理念与方法,提出网格支持下的服务型制造模式的概念模型。并建立了基于网格的服务型制造系统的体系结构。     

基于制造网格平台的模具制造资源共享机制研究

介绍了制造网格的基本概念,分析了中国模具制造企业制造资源利用现状以及对信息化的需求,提出了基于制造网格平台的模具制造资源共享机制.对中小模具企业里的各种与模具全生命周期有关的资源进行分类、规划和整合,以制造网格为平台构建了制造服务协同制造网络.通过对模具制造资源进行网格化封装,实现了资源的协同共享,为中国模具制造企业实现信息化和网格化制造提供了理论支撑.     

模具制造企业动态联盟技术的研究

针对我国模具制造业的特点，在分析已有的动态联盟制造模式的基础上，提出了一基于ASP的动态联盟制造模式，建立了一模具企业动态联盟的结构模型。     

基于ERP的快速模具制造系统设计

阐述了ERP系统的管理思想和快速原型技术在模具制造中的应用，提出在ERP系统中实施快速模具制造的组织模式。     

网络化制造与制造网络

分析了在当前制造全球化趋势下网络化制造系统的一些基本特征，介绍了网络化制造的基本概念及其解释，并给出一个由企业用户与网络化制造集成平台组成的网络化制造体系结构。结合当前制造业发展的趋势，着重提出了结合网格技术的制造网络的概念，描述了制造网络区别于传统Internet的一些特征。对网格技术与制造业的结合进行了研究，提出了构建于网格之上的制造网络的体系结构。根据制造网络的特性需求，提出了一种以网格技术为基础，建立在多代理系统协调控制框架与支撑工具基础上的制造网络的功能体系结构。     

制造网格--网格技术在制造业中的应用

网格技术的发展，将对制造业产生深刻的影响，将出现一种新的制造模式——制造网格。分析和总结了制造网格的应用情况，讨论了制造网格的关键技术。结果表明，网格技术有利于提高我国制造企业的产品研发和设计能力、资源共享能力、协同工作能力、管理能力，并能降低信息化的风险。     

Minimal Realization of Linear Graph Models for Multi-physics Systems

An engineering system may consist of several different types of components,belonging to such physical"domains"as mechanical,electrical,fluid,and thermal.It is t...     

INTEGRAL EQUATION METHOD＇S APPLICATION IN HOLE-EDGE STRESS OF COMPOSITE MATERIAL PLATE WITH DIFFERENT SHAPED HOLES

The strength of composite plate with different hole-shapes is always one of the most important but complicated issues in the application of the composite material. The holes will lead to mutations and discontinuity to the structure. So the hole-edge stress concentration is always a serious phenomenon. And the phenomenon makes the structure strength decrease very quickly to form dangerous weak points. Most partial damage begins from these weak points. According to the complex variable functions theory, the accurate boundary condition of composite plate with different hole-shapes is founded by conformal mapping method to settle the boundary condition problem of complex hole-shapes. Composite plate with commonly hole-shapes in engineering is studied by several complex variable stress fimction. The boundary integral equations are founded based on exact boundary conditions. Then the exact hole-edge stress analytic solution of composite plate with rectangle holes and wing manholes is resolved. Both of offset axis loadings and its influences on the stress concentration coefficient of the hole-edge are discussed. And comparisons of different loads along various offset axis on the hole-edge stress distribution of orthotropic plate with rectangle hole or wing manhole are made. It can be concluded that hole-edge with continuous variable curvatures might help to decrease the stress concentration coefficient; and smaller angle of outer load and fiber can decrease the stress peak value.     

Non-monotonic material contrast in scanning ion and scanning electron images

30 keV Ga⁺ focused ion beam induced secondary electron (iSE) imaging was used to determine the relative contrast between several materials. The iSE signal compared from C, Si, Al, Ti, Cr, Ni, Cu, Mo, Ag, and W metal layers does not decrease with an increase in target atomic number Z₂, and shows a non-monotonic relationship between contrast and Z₂. The non-monotonic relationship is attributed to periodic fluctuations of the stopping power and sputter yield inherent to the ion–solid interactions. In addition, material contrast from electron-induced secondary electron (eSE) and backscattered electron (BSE) images using scanning electron microscopy (SEM) also shows non-monotonic contrast as a function of Z₂, following the periodic behavior of the stopping power for electron–solid interactions. A comparison of the iSE and eSE results shows similar relative contrast between the metal layers, and not complementary contrast as conventionally understood. These similarities in the contrast behavior can be attributed to similarities in the periodic and non-monotonic function defined by incident particle–solid interaction theory.     

Application of Feature Extraction through Convolution Neural Networks and SVM Classifier for Robust Grading of Apples

This paper proposes a novel grading method of apples,in an automated grading device that uses convolutional neural networks to extract the size,color,texture,an...     

分布动态载荷识别的抗噪处理

针对正交多项式频域法在用多种响应对矩形薄板进行载荷识别中抗噪性较差的问题,综合运用平均法、矩阵预处理和奇异值截断法等方法对之进行改善,并引入空间映射的思想,将该方法的应用范围拓展为复杂的模型.利用仿真算例,证实了该方法具有较好的抗噪性.     

基于MELTAC-N平台的核电厂安全级DCS环网研究与测试

针对工程实践中环网通讯相关问题的处理缺乏理论基础及国产化安全级DCS平台的开发缺乏成熟经验借鉴问题,对基于MELTAC-N平台核电厂安全级DCS环网的软硬件实现进行了研究。提出了安全级DCS环网双环网冗余设计、光切换开关设计等硬件设计方法,以及以RPR协议为基础,采用全数据收发策略的软件设计方法。在CPR1000安全级DCS平台上对安全级DCS环网的可靠性及实时性进行了评价,并进行了容错能力、响应时间及响应时间稳定性测试验证实验。结果表明,基于MELTAC-N平台安全级DCS环网软硬件设计具有较好的容错能力及响应时间稳定性。     

Short-Term Relay Quality Prediction Algorithm Based on Long and Short-Term Memory

The fraction defective of semi-finished products is predicted to optimize the process of relay production lines, by which production quality and productivity ar...     

End-to-End Multiview Gesture Recognition for Autonomous Car Parking System

The use of hand gestures can be the most intuitive human-machine interaction medium.The early approaches for hand gesture recognition used device-based methods....     

The laboratory simulation of abrasive wear

Abrasive wear has long been recognised as one of the most potentially serious tribological problems facing the operators of many types of plant and machinery; several industrial surveys have indicated that wear by abrasion can be responsible for more than 50% of unscheduled machine and plant stoppages. Locating the operating point of a tribological contact in an appropriate operational ‚map’︁ can provide a useful guide to the likely nature and origins of the surface degradation experienced in use, though care must be exercised in choosing the most suitable parameters for the axes of the plot. Laboratory testing of materials and simulations of machine contacts are carried out for a number of purposes; at one level for the very practical aims of ranking candidate materials or surface hardening treatments in order of their wear resistance, or in an attempt to predict wear lives under field conditions. More fundamentally, tests may be aimed at elucidating the essential physical mechanisms of surface damage and loss, with the longer term aim of building an analytical and predictive model of the wear process itself. In many cases, component surface damage is brought about by the ingress of hard, particulate matter into machine bearing or sealing clearances. These may be running dry although, more usually, a lubricant or service fluid is present at the interface. A number of standardised wear test geometries and procedures have been established for both two- and three-body wear situations, and these are briefly described. Although abrasive wear is often modelled as following an ‚Archard’︁ equation (i.e. a linear increase in material loss with both load and time, and an inverse dependence on specimen hardness) both industrial experience and laboratory tests of particularly lubricated contacts show that this is not always the case: increasing the hardness differential in an abrasively contaminated lubricated pair may not always reduce the rate of damage to the harder surface.     

Limits of topographic measurement by the scanning tunnelling and atomic force microscopes

Parameters describing the topographic character of a surface (height, surface wavelength, slope and curvature) can be derived from equivalent sinusoidal profiles. The response of a surface-measuring instrument may be modelled in terms of instrument parameters such as stylus radius, and scanning range and resolution. The performance of the instrument may then be mapped as a zone in amplitude-wavelength (AW) space to show the sinusoidal profiles it is capable of measuring. In a first-order analysis the STM and AFM are considered as equivalent to contact-stylus instruments with a notional stylus radius equal to the tip radius plus the gap. Comparisons between different instruments and types of instrument are readily made by mapping in AW space. The error arising from convolution of the sinusoidal profile with that of the finite tip may be quantified and plotted as contours in AW space.