装备制造企业信息化整体解决方案及实施方法

为给装备制造企业实施信息化提供一些方法，在分析装备制造企业生产经营特点的基础上，提出企业在实施信息化过程中，要结合企业的实际，根据企业的总体发展规划，以“八个一”，即：一个思想、一组理论和方法、一个框架、一组工具和平台、一个买施途径、一组标准和规范、一个评价体系、一批关键技术为基本框架确定企业信息化整体解决方案，并结合沈阳电机股份有限公司实施信息化的过程，提出在实施信息化过程中应结合企业的实际需要，采取分步实施的原则     

企业信息化整体解决方案

给出了企业信息化整体解决方案的定义和框架，给出了一种支持企业信息化实施的集成框架，提出了企业信息化整体解决方案的实施途径，介绍了面向信息系统实施的企业业务战略规划、信息系统规划、信息系统实施与运行等主要阶段的实施步骤和具体实施方法。     

企业信息化整体解决方案的内涵和实施途径

给出了企业信息化整体解决方案的定义和内涵。提出了在先进制造技术、企业建模与诊断方法、集成框架与平台工具的支持下，实施企业信息化整体解决方案的途径。提出了面向信息系统实施的企业业务战略规划、信息系统规划、信息系统实施与运行等主要阶段的实施步骤和具体实施方法。     

基于SOA的MES集成技术研究

针对制造企业信息化中面临的关键性问题，制造执行系统（MES）和面向服务的体系结构（SOA）提供了很好的解决方案。在分析MES与SOA的相关理论与特点以及MES集成需求的基础上，提出了一种基于SOA的MES集成框架与方法，给出了工程实现案例，以期对于制造企业的应用集成与整体信息化有所帮助。     

过程规范语言应用分析

在实施并行工程和虚拟制造的过程中，如何有效地实现过程信息集成建模是当前研究的前沿问题之一。本文介绍了美国NIST主持的PSL项目对此问题的解决方案，分析了PSL实现的思想、过程、PSL V1．0规范的主要技术内容，指出PSL是实施虚拟制造技术过程中，解决大规模制造企业过程信息集成的可行方法。     

制造企业门户构建技术及其应用研究

针对制造企业信息化过程中所面临的“信息孤岛”问题，结合企业门户的概念提出了一种面向制造企业的企业门户解决方案——制造企业门户。该方案首先给出了制造企业门户的多层次体系结构及其构建步骤，然后阐述了基于该门户的应用服务集成方法和数据集成方法两项关键技术。最后在此基础上，以某汽车零件制造企业门户系统的构建为例介绍了制造企业门户在汽车零部件制造业中的实际应用。     

制造企业集成质量信息系统实施技术研究

文章基于对制造企业质量管理信息化现状和集成质量信息系统实施环境的调查与分析,针对集成质量信息系统在实施过程中的关键技术问题展开研究,对制造企业集成质量信息系统的实施技术进行了探讨,对实施环节中的技术难点进行了分析研究。构建了基于循环迭代的实施方案与技术路线,并给出了技术步骤,从技术角度构建了制造企业集成质量信息系统完整的实施技术解决方案,最后通过具体实施案例验证了该实施技术方案的实际操作及应用效果。     

CIMS/PIMS的实施与应用开发

在全球制造激烈竞争的环境下，设备维护管理对于制造企业降低成本，提高效益，在全球市场上保持其竞争力和较高的顾客满意度等方面，将起着至关重要的作用。本文结合天津钢管公司CIMS/PIMS的实施与应用开发过程，提出了设备集成化维护管理系统的解决方案，详细地阐述了该系统的需求分析、网络体系结构、三层数据结构模型和实现方式，并进行了实施效益分析。     

基于敏捷制造的制造执行系统

简要介绍了制造执行系统MES对于敏捷制造实施的必要性及意义.阐述了MES的应用及发展趋势,分析了敏捷制造下MES的特点及关键技术,为敏捷制造企业制订MES实施的整体解决方案提供参考.     

J2EE平台在PDM框架应用实施中的研究

本文阐述了企业信息化的现状和发展，着重介绍PDM技术在企业实施信息化过程中的作用，以及PDM在新一代网络技术的支撑下所面临的新的发展趋势和特点。以当前发展迅速的J2EE技术为工具，提出了基于Web的企业级应用平台中的PDM实现模式，即在互联网之上搭建企业的设计平台，这就为实现全球化的联合设计制造模式提供了信息平台的解决方案，并且结合正在蓬勃发展的Web Services技术，解决PDM系统在实现企业信息集成平台和企业联盟所面临的协同问题。     

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.     

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....     

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。     

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.     

ANGULAR DISTORTION ALLOWABLE VALUE AND ASSESS METHOD OF WELD ON COKE TOWER

A graph as the new engineering method for estimate the safety of bulging deformation of coke tower is proposed. Through stresses analysis of circumferential weld of coke tower and comparing the stresses produced by pressure with heat stress of steady state, residual stress, bending stress produced by both itself weight and wind loads, it showed that the stresses produced by pressure on the angle distortion are the main factor of equivalent stress of the combined stress. After comparing four kinds of stress controlling conditions, the relation to stress with depth of angular distortion, grade of curvature of angular distortion and half of region of angular distortion has been inferred. Graph of deformation allowable value of coke tower for different condition by angular distortion and half of region of angular distortion has been plotted. The five steps for its engineering use have been explained. The lighter the grade of curvature is, the larger of bulge allowance, may be, and the bigger of depth of angular distortion may pose too. For the coke tower with a popular structure of Dg 5 400 mm×28 mm, the result by graph is nearly more than the result of two formulas formed by other research, the error is less than 7.0%. But, the graph can be easily applied to different size of angular distortion.