基于嵌入式的电能质量监测系统设计

介绍了电能质量的定义及其计算方法，在此基础上设计了一嵌入式的电能质量监测系统。给出了系统原理框图，给出了各个模块的详细设计，列出了软件设计的要点。     

基于CAN总线的电力远程监测系统

介绍一种基于CAN总线的电力远程监测系统，阐述了监测系统集中器的CAN总线接口电路设计方法及CAN总线分布式测控网络系统的组建方法，给出了CAN总线通信系统的软件设计流程图.     

液压控制系统故障诊断的研究

针对宝钢冷轧MIEBACH焊机的液压系统，着眼于解决工业现场复杂液压系统的状态监测与故障诊断，介绍一套状态监测及故障诊断系统，采用了多任务、多用户、并行操作系统，实现数据采集、处理，以及状态数据库建立和故障的诊断，最后给出该系统的应用实例。     

基于网络环境的机电设备远程监测原型系统的实现

为了实现机电设备的网络远程监测和诊断，通过对CAN现场总线及C／S模式、B／S模式的应用范围进行比较，提出了一种基于CAN总线、C／S模式、B／S模式结合的网络化监测系统，构建了系统的网络框架，并以小型多功能旋转实验台为系统原型，给出了其振动信号的远程监测实例。实验证明系统可实时在线监测机电设备的运行状态。     

制造系统的状态监测与多传感器信息融合

运用多传感器信息融合理论与技术，针对高级制造系统设备与过程状态监测的特点、难 与要求，探讨建立柔性制造单元智能状态监测与诊断决策模型，并给出一具体ＦＭＣ状态监测系统及监测结果分析。     

张力控制试验平台及监测系统的研究

论述了张力控制试验平台及监测系统的硬件配置及软件组成。详细说明了该系统过程数据的测量、多档张力的控制、数据的监测与采集等问题，并给出了基于此平台完成的单神经元自适应PID控制策略及其优化实验。     

一种实时远程声环境测量系统

介绍一种利用公共通讯网络传输的远程声监测系统，并且给出了实施方案及监控软件流程。     

一种基于串行通信技术的远程监测系统

在自动化测量、实时控制系统和监测系统中，智能仪表之间、计算机和测试仪表之间数据通信越来越重要。串行通信是主要的通信手段。结合工程实例，阐述了在Windows下采用串行通信及VC＋＋技术实现系统远程监测的原理和方法，介绍了系统在硬件和软件方面的设计思想，给出了部分程序框图和清单。     

分布式监测诊断系统的开发与设计

给出了分布式监测诊断系统的定义，分析了分布式监测诊断系统的特点及设计要求，定义了分布式监测诊断系统的层次结构及各层功能，并给出了具体的分布式监测诊断系统设计实例     

数控机床状态监测系统的研究

为了使数控机床加工过程安全、可靠、高效、高质量地进行，对加工设备进行状态监测就变得非常重要。本文分析了数控机床状态监测的主要内容，论述了设备状态监测系统的基本组成和状态监测系统实现的关键技术，并针对数控机床的加工过程，给出了数控机床状态监测系统的工作流程和系统实现的具体结构。     

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.     

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....     

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.