介绍一种基于NI视觉软件的光学元件厚度测量装置.首先介绍光学元件厚度测量的基本原理-迈克尔逊等倾干涉;然后搭建光路,利用CCD进行干涉图像采集,传输到计算机中,利用NI视觉软件对图像进行处理,得出光学元件厚度;最后对测量误差产生的原因和消除途径进行了分析.该装置经过详实周密的数据处理,提高了测量精度和分辨力.
文中介绍了一种医学用的检测信号的采集处理电路,它能够准确的将微弱信号放大,具有精度高、噪声低、高抗干扰能力、低漂移、高稳定性、线形与保真度好、有合适的输入与输出阻抗、响应快、可靠性与经济性等优点.
In order to meet the employment requirements of higher vocational automation graduates,to improve students' ability of engineering practice,people developed an application-oriented new course combining automatic control theory with computer control technology.The teaching contents of the course and teaching methods have been carried on bold innovation.Practice has proved that students' ability of independent thinking,analyzing and solving practical problems has been greatly improved,which shows the success of curriculum reform.
现代飞机液压附件具有发展迅速、技术更新快、精度高和工况环境要求严格的特点,因此,对检测设备提出了更高的要求.通用液压测试台是专门为测试飞机上电液伺服阀、泵、助力器、减摆回油补偿器、液压电磁阀、液压缸、液压载荷机构、放气活门、油箱安全活门、应急排油活门、单向热膨胀活门、安全活门、液压单向活门、液压油锁、自动卸荷活门、正常制动活门、应急制动活门、液压制动阀、等量协调活门、舵机及电动机等器件的指标参数.
通过对流量计检定方法的研究,设计了一套基于LabVIEW软件的静态容积法流量计检定装置。介绍了该装置的机械装置、硬件实现、软件控制系统和保证检定精度的因素。
为了适应高职类电气自动化专业毕业生的教学要求,适应社会对高素质技能型人才的要求,首创的开发了一门应用型的新课程,对该课程的教学内容、教学方法进行了大胆的改革。实践证明,学生的学习积极性、技能及分析问题、解决问题的能力得到了很大提高,课程改革取得了很大的成功。
<正>一种基于LabVIEW软件的全站仪检定数据处理系统,系统包含有全站仪的数据交互功能、数据的无线网络远程通信功能、数据的处理、分析和显示功能以及数据结果的存储和查询功能。实践证明大大提高了全站仪检定、校准的工作效率和工作质量。全站仪是全站型电子速测仪的简称,是由电子测角、电子测距、电子计算和数据存储单元等组成的三维坐标测量系统,测量结果能自动显示,并能与外围设备交互信息。因其一次安置仪器就可完成该测站上全部测量工作,所以称之为全站仪。广泛用于地上大型建筑和地下隧道施工等精密工程测量或变形监测领域。任何一个仪器在测量时都会出现误差,这是不可避免的,全站仪也是一样,由于自身测量原
Zinc tungstate whiskers were prepared by solid state method. SEM was used to examine the morphology and microstructure of the whiskers. XRD and EDX were used to identify the phase composite. Whisker's growth mechanism and affecting factors were discussed. The experimental results show that the mechanism of zinc tungstate whiskers growth is vaporsolid process, the sintering temperature, holding time, ratio of components and fineness of powder are important process conditions of preparing zinc tungstate whisker.
As to power system voltage stability,this paper uses a nonlineardynamic model of on-load tapchanges (OLTC), impedance loads, decoupled reactive power -voltage relation to analyze simple power system model and Mbus OLTC power network model. And by forming the union of HYPERBOX method,the paper illustrates the construction of voltage stability regions in general systems. This paper also analyzes the simplified example of 2OLTC general systems detailedly. The paper comprises six sections:introduction ,an analysis of voltage collapse in simple power system ,dynamic network model-M OLTC case ,dynamic analysis of M OLTC case ,an illustration of construction of stability region and conclusion.
