基于虚拟仪器技术的电力参数测量系统设计

将计算机、数据采集卡等硬件与在LabVIEW虚拟仪器平台上开发的软件相结合,设计了一套完整的基于虚拟仪器技术的电力参数测量系统。从硬件和软件功能两方面对参数测量系统的实现方法及功能进行了详细的介绍,并利用LabVIEW强大的虚拟仪器设计能力在算法上采用加窗FFT的处理方法实现谐波分析。     

基于虚拟仪器的提升机衬垫摩擦系数测试系统

针对提升机不同工况下衬垫摩擦系数的测量,提出一种基于虚拟仪器的衬垫摩擦系数测试系统,在该测试系统中,利用虚拟仪器的PID模块实现了对衬垫比压、相对滑速的闭环控制.完成了测试系统软硬件的设计.该系统可以实现对不同压力、不同滑速下衬垫摩擦系数的测量.     

基于虚拟仪器技术的滚动轴承故障诊断系统的设计与试验

设计了一种基于虚拟仪器技术的滚动轴承故障诊断系统,提供了该系统的总体方案.根据虚拟仪器技术构建了系统的数据采集模块和信号处理模块,运用LabVIEW软件实现系统的信号采集和处理功能.通过试验表明,将虚拟仪器技术运用到滚动轴承故障诊断中来,不仅可以对测量结果进行实时显示,处理和存储等,而且使得测控过程更加高效和便捷.     

基于虚拟仪器的气缸信赖性试验测量系统软件开发

该文依据国际标准规定的试验规则,构建气缸信赖性试验测量系统,设计电磁阀驱动电路,配置虚拟仪器的硬件;利用LabVIEW,开发气缸信赖性试验测量系统软件.该测量系统可测量气缸的泄露量、最小作动压力和行程时间3个参数.应用表明该测量系统精度高,实用性强、操作简单.     

基于LabVIEW的计算机辅助水泵测控实验系统

本文设计一个集传感器技术和数据采集技术于一体的计算机辅助水泵测控实验系统,利用虚拟仪器技术,快速、准确地进行水泵的多参数测量、电动机的电参数测量及其他实验。本文简要叙述了系统的硬件组成原理和用LabVIEW开发的软件的主要功能和特点。系统的人机界面较好,结构简单紧凑,可操作性强,可以实现信号的实时采集、数据的自动测量、记录和分析处理等功能。实验内容实用丰富,测试的精度和效率较高,在实际应用中取得了良好的效果。     

基于虚拟仪器的转速、转矩、功率测试系统设计与研究

设计了基于虚拟仪器技术的转速、转矩、功率自动测试系统.系统采用LabVIEW语言设计,能够实现对旋转轴动力参数转速、功率的测量,并能实现数据的自动采集、保存、处理.由于该自动测试系统信号采集与信号处理相分离,其应用范围广.     

基于虚拟仪器技术的汽车综合测试实验台研制

利用虚拟仪器技术开发汽车综合测试实验台,进行了测量控制系统的硬件系统和软件环境的设计.验证利用虚拟仪器技术进行汽车综合测试系统的开发是可行的.     

基于虚拟仪器的输出延迟测量系统的研制

针对某型号工程引信时序电路板产生周期信号的输出延迟参数的测量需求,本文应用虚拟仪器技术,设计并实现了输出延迟参量的自动测量处理系统。此系统的实现减少了测量过程中的人为误差,有效提高了测量效率和测量精度。     

基于虚拟仪器的多总线兵器产品性能测试系统

现代兵器产品性能测试系统越来越多地采用计算机总线的自动化集成测量技术,虚拟仪器技术在军事测控领域也得到了广泛的应用.本文设计了一种基于PCI、ISA多总线联合应用的兵器性能测试系统,介绍了测试硬件环境的结构特点,并分析了NI LabVIEW开发软件的应用特点,给出了虚拟仪器技术在多参数数据采集、实时运动控制方面的应用方法.     

基于虚拟仪器的新型粗糙度测量系统的开发

利用轮廓仪与LabVIEW可视化的虚拟仪器系统开发平台相结合,本文开发了新的表面粗糙度测量系统。表面粗糙度评定参数的数学定义与功能模块程序相关分析,虚拟仪器的软件开发,实现了粗糙度多参数测量与评定。     

奶牛过瘤胃液中氨基酸的研究进展

本文综述了奶牛过瘤胃液氨基酸的概念、分类、检测方法、应用效果、影响因素及存在的问题和应用前景     

Quantitative measurements in in situ straining experiments in transmission electron microscopy

Several examples of recent studies by in situ straining experiments in a transmission electron microscope performed in the Toulouse group (France) are presented. In particular, quantitative measurements of the features of the dislocation motion are described. These examples deal with individual or collective propagation of dislocations, which are submitted to various types of obstacle. Different metallic materials are investigated: magnesium, intermetallics, aluminium alloys and γ phase of a superalloy.     

“中国制造”的发展趋势

<正>"中国制造"成为了眼下一大热门话题。近期相关媒体采访了几位我国著名的品牌问题研究专家,聆听专家们对我国目前品牌产品发展现状和未来发展的看法与建议。本刊将专家的观点经整理提供给大家,希望能对企业有所帮助。     

Progress in section-rolling technology in Japan

The technology of the rolling of sections has made great progress in Japan in the last 7 decades, and in the 15-year period since the introduction of universal mills development of the technology has been quite striking. Starting with the changes in mill layout, this progress is briefly discussed, and the technology that has brought about the development is described at length. Reference is made to the extension of universal rolling to the rolling of general sections, to the realization of computer control of the rolling of wide-flange beams and of full continuous rolling, to the automation of finishing operations, and, further, to energy-saving measures, which are the subject of major current interest.Lastly, the outlook for section rolling in the years ahead is considered on the basis of manufacturing facilities, manufacturing processes and demand trends, thus clearly indicating the direction in which the technology of section rolling is likely to proceed.     

Lubrication in steel strip rolling in Japan

Research into, and the state of technology for, lubrication in steel strip rolling in Japan are reviewed. Both cold and hot strip rolling are discussed. Subjects covered include coefficient of friction and oil film thickness, friction pick-up, and roll wear.     

Soft-control international debut in exhibition in Germany

On February 17-19, Qingdao Soft-control took part in the 34th international rubber tire machinery exhibition and the international awards of the new technologies of tire in Humbury, Germany. This is the largest rubber tire machinery exhibition, which held once every year by the international rubber tire technology magazine organization with high authority.     

Some recent progress in microtribology in Japan

The micro in the word of microtribology is defined as science and engineering supported by modern physics and chemistry. In the engineering area, the ultimate goal of microtribology is to create practical zero-wear devices. The importance of microtribology was recognized by Japanese scientists and engineers in the latter half of the 1980s, and much progress has been made in microtribological studies of mechanisms of friction, lubrication with very thin liquid films, and microwear processes.     

我国拖拉机标准回顾与展望

我国的拖拉机生产从20世纪50年代后期引进国外样机开始。经历了前期仿制、自行研制、技术引进和自主开发几个阶段。拖拉机标准也随之蓬勃发展。经过50多年的发展,我国拖拉机行业已形成以全国拖拉机标准化技术委员会为基本活动单元的行业标准化工作体系。目前我国有关拖拉机的各类标准总计210项。其中国家标准114项,机械行业标准93项。其他行业标准三项。在与拖拉机有关的88项国际标准中。修改或等同采用国际标准及国外先进标准58项。国际标准的转化率达65．9％。本期,我们特邀全国拖拉机标准化技术委员会秘书长尚项绳、中国农业机械学会拖拉机学会陈英超、江苏常发集团农业装备公司品质部长廖汉平、常州东风农机集团有限公司质量总师苏东林对拖拉机行业及标准发展．以及企业自身建设做详细介绍。