基于罗克韦尔PLC罐装生产线的研究与设计

基于PLC控制系统生产的小型饮料罐装生产线,对小型罐装生产量产品生产线进行分析,发现其在结构和控制上与现有大型罐装生产线有所不同。因此,将生产线系统分成4个能独立工作的工位,并且从空间和时间上进行简易化,提升小型饮料罐装生产线工作效率。     

一种饮料包装并联机械手设计与分析

将并联机械手技术应用于罐装饮料包装自动生产线,根据机构平面平动设计原理,设计一种并联机械手。依据机构运动学位置正逆解原理,对机械手的运动进行理论分析。利用图解法求出并分析了机械手末端执行手爪的工作空间。通过Adams2016进行仿真分析,仿真结果表明,并联机械手手爪运动范围与理论分析保持一致,为饮料包装并联机械手的设计提供了一种理论依据。     

粉剂罐装充填机充填机构的改造

对原粉剂罐装充填机构设计存在的零件脱落、寿命短等问题进行分析,把螺杆和搅拌器连接进行改进,螺杆支撑轴承改为气动密封,经三年多的使用,设备内部未出现过零件脱落等故障.     

浅析抽油机吊臂灌装封口焊缝开裂的原因

我厂生产的抽油机产品，其中一部件——吊臂是由两侧板、上下顶板焊接而成的箱型结构件。为了增加吊臂重量，采取在其空腔内罐装水泥／废钢的混合物。按照罐装工艺的要求，在空腔上顶板先割制两个300mm×200mm的矩形罐装口，如图1所示。待罐装水渺废钢混合物凝固72h后，用原板焊接封口（原工艺要求）。     

一种基于数控车床的尾座卡罐结构设计

煤矿液压支架立柱、千斤项及一般用途液压缸缸筒止口和内孔各沟槽的加工比较困难,难以保证其表面粗糙度和其与缸筒内孔的同轴度.为解决这一问题,设计一种基于数控车床的尾座卡罐装置.     

罐/瓶装饮料自动售货机的货道设计

市场上罐装或瓶装饮料种类繁多,瓶型各异,自动售货机的设计需要能够售卖各种瓶型饮料,而能确保自动售货机售卖各种瓶型饮料的核心是货道设计,本论文从多方面论述了在自动售货机货道设计中的注意点,以提高自动售货机售卖功能,从而可以提高自动售货机竞争能力,扩大其市场占有率。如何满足售卖市场上不同商品包装的饮料基础上设计出低成本、高价值的自动售货机,并结合自身设计的实例总结了货道设计。     

罐装水泥计量系统的开发研究

介绍罐装水泥计量系统的设计。重点介绍了系统的主要工作原理，硬件、软件设计及对系统中一些关键技术问题的研究。     

PLC在罐装饮料生产线上的应用

主要介绍三菱可编程控制器,PLC在罐装饮料生产线上的应用,通过三菱FX系列PLC程序设计及硬件设计和系统控制,实现饮料生产过程。     

PLC控制器在饮料罐装生产流水线系统中的应用

主要介绍了基于三菱FX2N-16MR PLC的饮料罐装生产流水线控制系统的设计。该系统的设计包括硬件设计和软件设计。其中硬件设计包括三菱FX2N-16MR PLC外部电路的设计与安装;软件部分包括程序的设计与调试。     

ICP-MS法测定罐装鱼中5种元素含量的国际比对及其结果分析

在英国食品分析水平评估计划(FAPAS) 组织的罐装鱼残留无机元素的能力测试项目中,采用微波消解前处理方法,电感耦合等离子体质谱(ICP-MS)法同时测定,标准加入法定量分析罐装鱼中砷、镉、汞、铜、铅的含量,方法可靠,结果令人满意。通过对FAPAS能力验证结果统计报告的研究,从测定结果、样品前处理、检测方法等方面对统计结果进行了综合分析。     

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.