首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 62 毫秒
1.
1 概述  励利软件公司所推出的可视化制造系统 (VISUALManufacturing)及其整个VI SUAL产品系列包括VISUAL财务管理、VISUAL工资管理、VISUAL人力资源管理及VISUAL质量管理 ,构成了制造业解决方案的综合ERP(企业资源计划 )系统。VISUAL制造系统以其全面集成的企业资源计划 (ERP)、先进的计划与调度(APS)、完整的制造执行系统 (MES)而成为工业界的主导产品 ,为制造行业提供了全面集成的制造解决方案。它适用于订单工程型 (ETO)、订单制造型 (MTO)、订单装配型 (…  相似文献   

2.
POWER FLOW ANALYSIS FOR A NEW ISOLATION SYSTEM-FLEXIBLE FLOATING RAFT   总被引:6,自引:0,他引:6  
POWERFLOWANALYSISFORANEWISOLATIONSYSTEM-FLEXIBLEFLOATINGRAFTPOWERFLOWANALYSISFORANEWISOLATIONSYSTEM-FLEXIBLEFLOATINGRAFTXiong...  相似文献   

3.
CIMS主题是国家“863”计划自动化领域的一个主题。经过多年的努力,CIMS主题已取得了重大进展。从现在起到2000年是CIMS主题实现战略目标的最后阶段。CIMS主题工作将在“七五”、“八五”两个台阶的基础上再上一个台阶;形成具有中国特色的CIM...  相似文献   

4.
STUDYONDOUBLECIRCULARARCPROFILESPIRALBEVELGEARTRANSMISSIONSTUDYONDOUBLECIRCULARARCPROFILESPIRALBEVELGEARTRANSMISSIONLiJinbao;...  相似文献   

5.
NEW VIEW OF CHARACTERISTIC ZONE CLASSIFICATION OF FUSION WELDING JOINT   总被引:1,自引:0,他引:1  
NEWVIEWOFCHARACTERISTICZONECLASSIFICATIONOFFUSIONWELDINGJOINTNEWVIEWOFCHARACTERISTICZONECLASSIFICATIONOFFUSIONWELDINGJOINTZha...  相似文献   

6.
润滑脂是由稠化剂、液体润滑油、添加剂、稳定剂和填充剂等组成的具有可塑性的润滑剂,用以润滑、密封和保护机械装备。 1.国产润滑脂的分类标准 (1)按国际标准分类法分类 1987年国际标准化组织(ISO)发布了“润滑剂、工业润滑油和有关产品(L类)的分类——第九部分X组(润滑脂)”的分类标准(ISO/DIS 6743/9—87)。 1990年我国等效采用了ISO标准,制定发布了“润滑剂和有关产品(L类)的分类——第八部分X组(润滑脂)”的分类标准(GB/T 7631. 8—90)。每种润滑脂的完整标记应包…  相似文献   

7.
WHEELBASE PREVIEW OPTIMAL CONTROL FOR ACTIVE VEHICLE SUSPENSIONS   总被引:1,自引:0,他引:1  
WHEELBASEPREVIEWOPTIMALCONTROLFORACTIVEVEHICLESUSPENSIONSYuFanNationalAutomobileDynamicSimulationLabJilinUniversityofTechnolo...  相似文献   

8.
NUMERICALANALYSISOFELAS-TOHYDRODYNAMICLUBRICATIONWITHTRANSIENTVISCOSITYNUMERICALANALYSISOFELAS-TOHYDRODYNAMICLUBRICATIONWITHT...  相似文献   

9.
本文首先对我国“八五”期间863/CIMS的标准化工作和与之有关的科研开发工作做了总结,对国际标准化组织在最近几年的标准化工作和发展趋势进行了分析归纳,在此基础上对我国的CIMS标准化提出了作者的见解。并提出CIMS标准化应该与CALS标准化相结合,其中的重点应该是产品数据技术标准(STEP,PLIB),SGML标准和EDL标准。  相似文献   

10.
高品质硬质合金工具的先驱——日本黛杰公司及其产品日本黛杰工业株式会社(DIJET.INDUS-TRIALCO.,LTD)是日本著名工具厂商。公司建立五十年来,在硬质合金工具领域不断开拓进取,已成为日本第二大硬质合金工具专业厂家,并获得ISO9001认...  相似文献   

11.
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...  相似文献   

12.
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.  相似文献   

13.
Giannuzzi LA  Utlaut M 《Ultramicroscopy》2011,111(11):1564-1573
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.  相似文献   

14.
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...  相似文献   

15.
分布动态载荷识别的抗噪处理   总被引:2,自引:2,他引:0  
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.  相似文献   

16.
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。  相似文献   

17.
The fraction defective of semi-finished products is predicted to optimize the process of relay production lines, by which production quality and productivity ar...  相似文献   

18.
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....  相似文献   

19.
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.  相似文献   

20.
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.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号