浅谈炼化装备新时期下的发展

基于炼化行业的现状,介绍了炼化企业在智能化发展面临的挑战、存在的问题以及大数据时代的机遇,并分析了为炼化企业服务的装备制造业未来的发展方向。     

数控机床智能化技术研究

作为现代装备制造业的工作母机,数控机床的发展对装备制造业的发展起到了至关重要的作用.目前数控机床已经进入到了智能化时代,数控机床具备了越来越多的智能化功能.本文在介绍智能数控机床定义的基础上,分析了数控机床智能化的意义和研究方向,最后给出了数控机床智能化技术研究和应用的实例.     

嵌入式技术应用： 大型装备的智能化

在中国国家 863高技术发展计划项目《手持智能化大型旋转类设备故障监测与诊断设备》，中国国家自然科学基金资助项目《多重故障非线性转子系统关键理论及远程诊断的研究》共同资助下，针对大型装备的智能化运行、控制与管理，开展嵌入式技术应用，对中国大陆地区所开展的相关应用进行评述。 对大型装备在国民经济中的重要地位、装备制造业智能化以及嵌入式技术应用的发展趋势进行综述，提出嵌入式技术是实现大型装备智能化与自动化的重要手段，也是企业智能化与自动化的重要手段。 以大型气体压缩机、水泵、电机、汽轮发电机组、数控机床、工程机械、矿冶设备等为例，介绍嵌入式技术在大型装备状态监测、故障诊断与预知维修以及其他智能化方面的应用实例。     

浅析数控技术的发展应用

介绍了当令世界数控技术及装备发展的趋势及我国数控装备技术发展和产业化的现状,以及数控机床在模块化、高精度、高速化、柔性化、智能化、网络化等方面的发展情况.并阐述了机电一体化技术对于改变整个机械制造业面貌所起的重要作用.     

面向智能装备的工业互联网平台参考架构

面向重型机械、机器人等智能装备行业对设备管理、远程运维、优化迭代等方面需求,本文提出了一种面向智能装备的工业互联网平台参考架构,介绍了基于Kubernetes的PaaS平台、微服务架构、工业大数据系统等核心模块,以及满足工业需求的安全系统。有利于实现智能装备行业数字化、网络化、智能化,促进装备制造业与新一代信息技术融合发展,规范了工业互联网平台建设,为工业互联网平台搭建提供有益借鉴。     

信息资讯

我国机械制造业将进入智能时代智能制造就是信息技术在传统制造业的深度渗透和融合。智能制造装备在世界装备制造业当中属于最新发展的领域,是当今工程机械行业技术发展的主流方向。在"十二五"期间对工程机械重点主流产品都要达到智能化、信息化控制水平,特别是大型工程机械,要实现本机和远程的智能化控制。我国的装备制     

智能装备产业将迎来重要发展机遇期

正智能装备是传统产业升级改造、实现生产过程自动化、智能化、精密化、绿色化的基础,是实现生产过程和产品使用过程节能减排的重要手段。《中华人民共和国国民经济和社会发展第十二个五年规划纲要》中明确了智能制造装备是高端装备制造业领域中的重点方向。装备制造业作为国民经济发展和国防     

坚持自产自研 引领智慧未来 访兰剑智能科技股份有限公司创始人、董事长吴耀华先生

<正>中国制造业的快速发展推动了物流产业的显著进步。物流设备与产品创新,反映了制造业从批量生产到个性化定制的转型需求。软硬件集成与通信技术使物流过程透明化,优化企业管理决策。物流装备领域正经历自动化、智能化变革。当前,如何实现物流装备与系统的智能化发展,提升制造业竞争力,成为产业核心议题。     

浅谈5G通讯技术在天然气长输管道智能化控制上的应用

随着自动化、智能化技术的飞速发展,5G通讯技术应运而生.5G通讯技术让很多行业的自动化、智能化得以完善.在天然气长输管道智能化控制中,利用5G通讯技术,实现云计算、物联网、大数据、智能分析等智能化应用,让天然气长输管道运行状态数据收集更完善,让数据处理更快速,让数据反馈更及时.5G通讯技术在天然气长输管道智能化控制的状...     

我国机械制造业将进入智能时代

智能制造就是信息技术在传统制造业的深度渗透和融合。智能制造装备在世界装备制造业当中属于最新发展的领域,是当今工程机械行业技术发展的主流方向。在“十二五”期间对工程机械重点主流产品都要达到智能化、信息化经制水平,特别是大型工程机械,要实现雍机和远程的智能化控制。     

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.