梳状光电传感器及其信号调理电路的研制

为了改变车辆行驶性能测试采用五轮仪的落后状况，采用新一代梳状光电传感器，研制成非接触式车速仪。分析了该光电传感器的工作原理及信号特点，设计了适合处理该信号的窄带通跟踪滤波器。通过压缩带宽，克服了干扰，防止了有效信号的丢失，提高了精度。研制的锁相环预偏电路，解决了超步车速和调速的测量问题。实际测试和对比试验表明，采用该光电传感器及其研制的车速仪，测量精度高，使用方便，具有较大的推广应用价值。研究的跟踪滤波技术也适用于其他更高频率信号处理的应用场合。     

新型三维柔性触觉阵列传感器标定系统与方法研究

介绍一套新型三维柔性触觉阵列传感器标定系统,该系统可用于柔性压敏材料的标定。该系统分别采用求解标定矩阵和BP人工神经网络的方法完成传感器标定,进行误差分析并比较其优缺点。该系统的设计简化了对柔性阵列单元进行标定的程序,达到了预期的目的。     

Stewart型六维力传感器的静态解耦实验

本文研究了一种Stewart型机器人六维力传感器的静态解耦实验问题，为该种六维力传感器的实用及其产业化奠定基础，并且介绍了传感器测试原理、标定装置，进行静态标定与解耦实验。实验结果分析表明，该六维力传感器解耦性良好，满程测量精度能达到2％。     

USB接口智能传感器标定数据采集系统的设计

传统智能传感器标定系统数据采集通常采用专用的板卡，成本高，采集点数十分有限。通用串行总线USB为传感器标定系统的多点数据采集和传感器的网络化标定提供了很大的便利。利用USB可以实现较传统方式更有效、更方便、更经济的多传感器标定系统数据采集。介绍利用USB接口来实现智能传感器网络化标定系统的设计。     

单点激光三角法测距及其标定

介绍了一种快速准确的非接触测距方法，阐明了单点激光三角法测距的原理及其测量系统的主要组成。针对测量用的光敏传感器一电荷耦合器件(Charge Coupled Device，CCD)之标定曲线的非线性特性，着重叙述了用逐段折线逼近该标定曲线的方法，并给出了具体的算法程序。     

基于LabVIEW的传感器静态特性标定系统

介绍了一种基于图形化编程工具LabVIEW的半自动传感器静态特性标定系统的构建方法,主要从系统的总体结构、传感器各静态特性指标的含义及算法的软件实现方法等方面进行讨论.然后以Pt100温度传感器标定为例,阐述了该系统的具体工作流程,并对标定系统进行了误差分析.实际测试结果表明该标定方法快捷有效.     

浅谈自动变速器热车后跑不起故障诊断和排除

主要介绍。部2003年款风度A33电子自动变速器热车后跑不起车速的故障诊断和排除过程,此自动变速器在行驶到热车后,输出轴转速数据突然失效,导致自动变速器控制器错误读取变速器输出轴转速信号,从而导致变速器控制器错误地控制变速器行驶挡位,造成自动变速器停留在低挡行驶无法进行换挡,通过对传感器的线路检查和更换变速器输出轴传感器,排除该车自动变速器跑不起车速的故障,恢复变速器原来良好的行驶状况。     

基于正弦力加载的力传感器动态标定技术研究

针对国内现有动态标定装置精度不高、重复性较差的问题,提出了一种基于正弦力加载的新型力传感器动态标定方法;对该标定方法做了详细介绍,阐述了该标定系统中最关键的正弦机构的工作原理;利用基于最小二乘的曲线拟合法对力传感器和位移传感器输出正弦电压的幅值进行了求解,并以此为基础,依据相应公式在LabVIEW中设计了数据处理程序,实现了对力传感器动态灵敏度的精确求解;搭建了实验平台,对Interface 1010AJ型力传感器进行了1 Hz~5 Hz的动态标定,并分析了实验结果。研究结果表明,该新型的力传感器动态标定系统具有良好的精度,其误差在1.5%内。     

中国第一个GE露点传感器高精度全自动标定系统在常州服务部投入运行

GE检测控制技术服务部门宣布，经过美国专家精心调试后，GE露点传感器高精度全自动标定系统已在常州服务部投入正式运行，这是除了美国、爱尔兰、日本之外，全球第四个拥有和运行这套自动标定系统的国家和地区。该装置是GE在中国直接投资兴建的唯一与国外数据库相联的露点传感器标定装置。该装置采用了露点传感器生产流程中的标定技术，不仅提供最新的标定数据，还可以对其性能进行评估，提供最佳的标定周期建议。     

传感器自动标定系统在南瑞研制成功

2011年5月26日,南瑞水利水电分公司自行研制成功的系列传感器自动标定系统——“位移类传感器自动标定系统”、“应变类传感器自动标定系统”实现了位移类、应变类传感器的自动标定,目前该系统已通过南京市计量监督检测院检验,取得相关合格证书。     

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...     

On the Relation of Load to Average Gap in the Contact Between Surfaces with Longitudinal Roughness

A computer simulation model for the contact between longitudinally-oriented rough surfaces has been formulated. This model closely duplicates the actual surf ace contact deformation behavior by taking into account the elastic interactions between the asperities. There were no assumptions made about the shapes, or any deformation behavior of the asperities, except for their obeying the laws of elasticity. The plastic deformations on the high asperity peaks were taken into account by setting a ceiling on their contact pressures at the material hardness value. The simulations used real surface profiles which were digitized from unworn circumferentially ground steel surfaces. Each pair of these profiles was mathematically combined to form an equivalent rough profile pressing against an infinitely rigid flat and having the appropriately adjusted elastic modulus. A total of 28 different pairs of profiles were used in the simulations. Each contacting pair was subjected to 30 different load levels and the local contact pressures and deformations were calculated. The contact simulations yielded some important mathematical relationships between parameters, such as the real area of contact, average gap, and average asperity load through statistical curve fitting. Two analytical functions were generated to relate the average load to average gap and the real area of contact to load.     

三绕组变压器的双绕组等效建模及在Matpower中的应用

针对实际电网存在着大量的三绕组变压器,但国际上一些著名商业软件,如BPA仿真软件、Matpower这一权威潮流计算开源软件,均只提供双绕组变压器模型,限制了其在具有三绕组变压器的电力系统中的应用的问题,潮流计算是自主开发的电力系统各种应用软件的核心模块,因此依托国际权威开源程序进行二次开发,是一种较好的选择。对Matpower要求的数据格式进行了归纳,对变压器的一般的等值电路及带理想变压器的等值电路和带标幺值的等值电路进行了分析研究,提出了三绕组变压器转换为双绕组等效模型的建模方法,使得原先只适应双绕组变压器的潮流计算软件可以适用于三绕组变压器电网的潮流计算;最后以Matpower软件为例进行了案例计算,并用PSASP仿真软件进行对比验证。研究结果证明,所提出的建模方法是有效的。     

Quantum Cooperative Robotics and Autonomy

The intersection of Quantum Technologies and Robotics Autonomy is explored in the present paper.The two areas are brought together in establishing an interdisci...     

电站锅炉模糊风险评价方法研究与应用

针对电站锅炉风险等级评价问题,将模糊综合评价技术应用到电站锅炉风险等级评价中。开展了电站锅炉失效影响因素及模糊评价因素的重要程度分析,建立了一套科学合理适于在线评价的电站锅炉风险评价体系,提出了模糊综合评价技术与改进的模糊层次分析法相结合的模糊风险评价方法,利用改进的模糊层次分析法计算了指标体系中各层指标权重。对某一台电站锅炉的实际运行工况影响子因素进行了模糊风险评价,采用模糊合成算子进行模糊综合运算得到电了站锅炉运行工况影响子因素的评价向量。研究结果表明:电站锅炉的运行工况影响子因素的风险评价等级为第6级,失效可能性等级为小,该电站锅炉运行工况良好。     

考虑进油孔有限长滑动轴承油膜力的近似解析解

针对具有进油孔的有限长滑动轴承油膜力求解问题,采用变分原理和分离变量法,求得了有限长滑动轴承油膜压力分布的近似解析表达式。将油膜压力分布的近似解析表达式在油膜存在区域上进行积分,即得到了油膜力。将提出的计算有限长滑动轴承油膜力方法与无限长轴承模型、有限元方法的计算结果进行了比较,发现了提出的方法与有限元方法的计算结果很接近。最后,研究了进油孔位置和进油压力对油膜存在区域、油膜力等的影响,研究结果表明进油孔位置和进油压力对油膜存在区域和油膜力有较大的影响。     

Fifth International Summer School on Screw-Theory Based Methods in Robotics

正3-11 September,2014University of Bologna,Bologna,Italy www.summerscrews.org summerscrews2014.ing.unibo.it SUMMER 20SCREWS 14In 2014,our screw-theory school comes to the world's oldest university.In early September,Summer Screws'14 will gather six experts in the application of screw theory in robotics and up to 40 participants at the University of Bologna,Bologna,Italy.The school will teach attendees how to apply existing methods and empower them to develop new ones in their own research.The basic theoretical notions will be introduced in a rigorous manner,emphasizing examples,applications,and exercises.Scholarships are available.     

交通荷载作用下桥梁结构参数识别方法

应用动力节点加载法,将作用在桥梁上的交通荷载转化为等效节点荷载,再用两步构造法识别结构物理参数.第1步,用Newmark-β方法变换结构运动方程,并用结构的加速度响应求得变换空间内的位移、速度和加速度响应;第2步,基于最小二乘原理,构造出变换空间内求解结构参数的递推式,进行结构物理参数识别.数值模拟结果表明,在交通荷载作用下,该方法能够快速、准确地进行桥梁结构参数识别.     

INDUSTRIAL ENGINEERING AND VISUALISATION-A PRODUCT DEVELOPMENT PERSPECTIVE

Taking the actual project of teaching and researching process for example, the relationship between the industrial engineering and product development is discussed. And use the novel visualization technology to support the industrial engineering and product development. How to use the new computer modeling and simulating technologies to support the product development and industrial engineering, is introduced especially. The support includes both domestic products and industrial systems. The visualization and computer technologies take a very important role in some system or multi-direction modeling, those technologies mentioned above can help the industrial engineers study the effect of design on the whole life circle, including the producing steps. So the engineers can avoid making the wrong decision which may cause bad effects on the whole industrial engineering.     

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.