一种时序转换方法液晶显示系统的设计与实现

在基于32位微处理器MC68331的剑杆织机监控系统中，完成了控制板QPY—ENH6255，液晶模块LM64P83L和微处理器MC68331之间的接口设计，介绍了控制板和微处理器接口间一种时序转换方法的软硬件实现。介绍了系统初始化程序的设计方法及汉字菜单显示程序的设计流程。     

SX52嵌入式Internet网关设计及实现

嵌入式系统接入Internet是嵌入式系统发展的一个方向，由8位微处理器SX52构成嵌入式网关是一种低成本简单实用的方法。本文简要介绍了SX52MCU的结构和指令原理，并讨论基于SX微处理器实现嵌入式Internet网关设计实现方案。     

新型录像机软件集成控制系统的研究

本文提出了新型录像机伺服／控制／定时功能一体化数字集成控制系统的设计思想，进行了相应软、硬件系统的设计，给出了软件伺服算法，所有设计功能均在单片微处理器μＰＤ－７８１４８上编程实现。经仿真调试，达到了预期的结果。该系统可以替换当前录像机伺服控制系统和定时器系统相分离的双微处理器系统结构，适应录像机高集成度、小型化与多功能的发展趋势。     

基于ARM的远程数据采集系统的设计与实现

随着电子技术的发展，ARM系列微处理器得到越来越广泛的应用。介绍了一种基于ARM系列的微处理器S3C4480X与串行A／D转换器MAX186，并利用外置Modem构成的一个远程数据采集系统。介绍了S3C44BOX及MAX186的性能特点，并说明了系统的组成原理、主要外围接口设计和系统软件设计框架，给出了A／D转换子程序。系统在实际中取得了很好效果。     

基于S3C2410的视频监控系统的设计

介绍基于ARM微处理器的嵌入式网络视频监控系统的组成，着重阐述了监控系统的原理、设计方案，硬件模块和软件模块的实现方法。     

实时操作系统μC／OS-II在ARM微处理器上的移植

操作系统在微处理器上的移植已成为嵌入式系统开发过程的重要内容。对嵌入式实时操作系统μC／OS-II及其内核结构进行讨论，对移植的环境和条件给予了详细分析，通过修改内核中与移植相关的程序文件，实现了μC／OS--II在ARM微处理器上的移植，最后给出了移植测试的方法及其必要性。     

基子MSP430和DSP的动平衡测量系统

介绍了动平衡的基本概念，并针对传统的单微处理器动平衡系统处理实时性不强等缺陷，介绍了MSP430单片机结合TMS320数字信号处理器组成的动平衡测量系统的原理和实现方法。     

国内外工业控制计算机的发展概况

国内外工业控制计算机的发展概况机械工业部科技司段明祥１９７１年以来，由于微电子技术的发展、大规模集成电路和微处理器的出现，和通用计算机一样，以微处理器为基础的工业控制计算机（简称为工控机）系统得到迅速发展和广泛应用。一、国外工控机的发展趋势１，分散型...     

基于32位微处理器MC68331的主轴检测系统

提出了一种基于32位微处理器MC68331的主轴检测系统方案，并概述了检测方案的确定及传感器选型，重点分析了系统模块设计和软件设计。该检测系统已用于JZ-Ⅱ剑杆织机上，对提高织物质量取得了显著效果。     

基于嵌入式的多路数据采集系统的设计

设计一种基于μC／OS-Ⅱ的多通道数据采集系统。该系统以单片机EP7312为微处理器，采用高精度LTC1605作为转换元件，提高了系统的精度。     

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.