PDM与ERP的数据集成方案应用研究

BOM是PDM、CAPP和ERP系统集成的核心。本文对PDM与ERP的2种接口集成方案作了详细的阐述,较好地实现了从EBOM到MBOM的数据转换和集成。指出了2种PDM与ERP集成方案的优缺点,为企业PDM与ERP的集成选型提供了依据。     

PDM与ERP集成方案研究与应用

论述了PDM与ERP系统集成的重要性以及两系统的区别和联系,通过对两系统交互的数据分析,得出了系统集成的内容,接着对PDM与ERP的集成技术和集成方案进行研究,建立了2种接口集成模型,并分析各模型的优缺点,为企业选择集成方案提供了依据。     

PDM与ERP集成方案研究与应用

论述了PDM与ERP系统集成的重要性以及两系统的区别和联系,通过对两系统交互的数据分析,得出了系统集成的内容,接着对PDM与ERP的集成技术和集成方案进行研究,建立了2种接口集成模型,并分析各模型的优缺点,为企业选择集成方案提供了依据。     

PDW/ERP集成技术的研究与应用

论述了PDM与ERP系统集成的必要性,给出了两个系统集成的数据内容.随着企业的不断发展,制造BOM不再单一地从PDM传递到ERP,出现了从ERP传递到PDM的逆向需求.在分析了现有的集成方法之后,应用一种基于脚本的PDM/ERP系统集成的方法,介绍了从ERP传递制造BOM到PDM,利用ERP中的制造资源编制工艺路线,再把编制好的工艺路线从PDM传递到ERP的全过程.该方法在企业的成功应用,证明了研究容的有效性.     

现代制造业CAx/PDM/ERP系统集成研究

企业信息化的重点是制造业信息化,而制造业信息化的元技术间的集成以及PDM与CAx系统集成、PDM与ERP系统集成中的相关技术和集成方式,最后介绍了基于CORBA平台的以PDM为核心的CAx与ERP的集成方案.现代制造业只有建立在CAx/PDM/ERP集成系统的基础上,来提高制造业信息系统的集成深度与广度,才能为企业的发展与竞争提供充实的信息化基础保证.     

ERP与PDM的差异及集成模式研究

在对ERP和PDM之间的异同进行分析对比的基础上 ,提出了ERP和PDM的集成方案 ,并对集成技术中的 4种实现模式 :封装集成模式、间接集成模式、直通集成模式、工具集成模式进行了论述     

GT/CAD/CAPP/PDM/ERP系统集成研究

研究ETO生产方式下以成组技术为基础的CAD/CAPP/PDM/ERP的集成方法,包括面向CAD/CAPP/PDM/ERP的集成的成组信息编码,基于成组编码的CAD/PDM集成、CAPP/PDM集成和PDM/ERP集成.提出了基于成组技术的CAD/CAPP/PDM/ERP集成框架,研究了贯穿于CAD、CAPP、PDM与ERP系统的统一的成组编码方案和信息编码方案.     

基于XML的PDM和ERP集成

分析了PDM和ERP系统间的异同.论述了XML数据交换技术和基于CORBA平台下中间件技术,并且在此基础上提出了基于XML的PDM和ERP系统集成方案,给出了集成模型.     

ERP与PDM的差异及集成模式研究

在对ERP和PDM之间的异同进行分析对比的基础上，提出了ERP和PDM的集成方案，并对集成技术中的4种实现模式：封装集成模式，间接集成模式，直通集成模式，工具集成模式进行了论述。     

提高企业信息化技术之重要途径——ERPS与PDMS集成

本文分成四大部分,首先阐述了ERP系统与PDM系统的集成在企业信息化建设中的重要作用;接着对ERP系统和PDM系统功能之异同及两系统集成对克服ERP系统功能的局限性、提高企业信息化水平的作用进行分析,通过比较进一步地论证两系统集成的必要性;第三部分对ERP系统与PDM系统的集成技术进行了重点介绍;文章最后对ERP系统与PDM系统集成的可行性和必然性进行总结。     

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.     

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.