接触式板材厚度在线测量跟踪系统

介绍了接触式权材厚度在线测量跟踪系统的原理及其结构特点。实践证明该测量跟踪系统能与被测板材的形态同步变化，使测量结果只与板材的厚度有关。实现了板材厚度的在线检测和监控。     

钢板厚度测量系统的设计

介绍一种钢板厚度在线测量系统的结构和工作原理,并详细阐述一些关键部分的设计.     

金属板材织构在线检测技术的研究进展

综述了金属板材织构在线检测技术的研究进展,介绍了基于X射线衍射技术织构在线检测的原理和方法。着重讨论了基于面探测器织构在线检测技术的基础和应用研究,分析了织构在线检测技术存在的问题。最后,展望了织构在线检测技术的未来。     

机载火控系统智能检修设备的设计

介绍了基于PC的机载火控系统智能检修设备的设计思想,重点讨论了检修设备的硬软件实现方法.在软件部分阐述了利用VC控件MSComm编程实现串口通信的方法.系统精度和自动化程度高,具有良好的通用性,可方便地推广应用到新型机载火控系统上.     

基于VC++6.0的GPIB仪器控制程序的设计

GPIB仪器是计算机自动测试系统中广泛使用的一种仪器;Visual C 60是一种功能强火的的Windows程序开发平台本文通过“语音告警系统智能测试系统”的设计实例,介绍了在VC 6．0环境下对GPIB仪器的测试程序设计方法。     

基于SCR的桥梁设计绘图技术

利用ObjectARX等技术编写桥梁参数绘图程序较为复杂,而编写生成SCR脚本文件来间接实现AutoCAD平台下的参数化绘图却很简单,而且可以采用任何编程语言进行编写,最具代表性的是利用技术成熟、资料完善的VB6.0、VC++6.0编程环境编写参数化绘图程序。以桥墩侧面图的编程为实例进行演示     

基于VC+ +6.0的PC机与单片机串行通信设计

本文介绍了如何利用通信控件MSComm设计PC机与单片机之间的串行通信。硬件部分采用MAX2 32AESE芯片解决了PC机与单片机之间通信连接电平的不一致问题 ;软件部分给出了VC 6 0编写的PC机通信程序段和汇编语言编写的单片机通信程序 ,并成功应用于干扰场强测量仪检定系统     

基于VC 6.0的PC机与单片机串行通信设计

文章比较了串行通信的多种实现方法,介绍了如何利用 VC 6.0的通信控件 MSComm 设计 PC 机与单片机之间的串行通信。硬件部分采用 MAX232AESE 芯片解决了 PC 机与单片机之间通信连接电平的不一致问题;软件部分给出了 VC 6.0编写的 PC 机通信程序段和汇编语言编写的单片机通信程序,并成功应用于干扰场强测量仪检定系统。     

基于模糊PID在线熔融指数仪测控系统设计

为实现聚合物的熔融指数在线测量,实时监控加工过程,设计自行整定参数的PID控制器。首先,将自整定技术最常用的模糊规则用于PID控制器中,基于LabVIEW的PID控制模块、模糊设计模块、通信模块等搭建模糊PID控制器,并借助Simulink仿真平台进行仿真。仿真结果表明,该控制器稳定性好、抗干扰能力强。然后,在增加毛细管流变仪循环流道的基础上,利用LabVIEW中模糊工具箱和PID函数搭建测控系统并进行实验测试。实验结果表明:熔融指数测量值相对误差为6.7%,系统具有良好在线控制准确度。     

非金属超声检测仪检定装置控制系统的设计与开发

针对非金属超声检测的结构特点以及对精度的要求,自行研究设计全自动非金属超声检测仪检定装置的控制系统。其控制系统采用了运动控制卡的结构模式,软件设计采用面向对象的程序设计语言C＋＋,利用VC＋＋完成了用户界面的开发。     

镀层厚度对热镀锌热轧板耐蚀性的影响

为模拟热镀锌板的实际使用情况,以剪裁后不同镀层厚度的热镀锌热轧板为研究对象,采用光学显微镜(OM)观察镀锌前后基体组织,通过中性盐雾试验分析镀层厚度对热镀锌热轧板产生白锈和红锈的影响规律。结果表明:在腐蚀过程中,腐蚀沿镀层由四周向内部扩展,同时由钢基体向表面扩展和锌层表面向内部扩展;随着镀层厚度增加,腐蚀扩展时间增长导致腐蚀时间增长,热镀锌板抗白锈能力增强,意味着耐蚀寿命增加;但抗白锈能力与镀层厚度呈非线性关系,涂层较厚时,通过增加镀层厚度提高热镀锌板抗白锈能力的效率降低。     

组合秤包装生产线分布式监控系统的软件设计

简要介绍了组合秤包装生产线的组成,为了提高该生产线的工作可靠性和智能化程度,设计了一个小型分布式监控系统。整个软件系统主要包括通信软件、监控软件和诊断软件3部分,简要介绍了这3部分的设计过程。此软件系统基本能满足使用要求,在实际的生产应用中具有一定的推广价值。     

On the Effect of Plate Thickness on Post-Overload Fatigue Crack Growth

Plate thickness can have a profound effect on fatigue crack growth following theapplication of an overload cycle. A modified strip-yield model is presented for determining the effects of plate thickness based on the mechanism of plasticity-induced crack closure and first-order plate theory. This approach eliminates the need for any empirical or fitting parameters. Comparisons are made with experimental data for the case of a single tensile overload applied under otherwise constant. ΔK loading. The theoretical crack growthpredictions are found to be in good agreement with the experimental data.     

SZPT数字制版控制条的结构及功能

介绍了深圳职业技术学院研发的计算机直接制版控制条"SZPT数字制版控制条"的组成、等间隔平行线区、分辨率平行线区、星标、S检测控制区、尖点区和棋盘形状区等各控制区的构成及其主要控制功能,并给出SZPT数字制版控制条的主要运用过程.     

Quartz Resonators for Monitoring Thin-Film Mass and Thickness

A detailed analysis is presented for a quartz resonator-film system that substantially improves the accuracy in determining the mass and thickness. A proposed method of measuring the mass and other physical properties of the films is tested by experiment, which does not require preliminary calibration.__________Translated from Izmeritelnaya Tekhnika, No. 2, pp. 29–32, February, 2005.     

复合板基层厚度对激光焊接头腐蚀性能的影响

目的通过探索基层金属厚度对复合板激光穿透焊接的影响规律,分析其影响度与焊接速度、激光功率的差别,为双金属复合材料激光穿透焊接提供更多的技术支撑。方法以焊接速度、激光功率和基层金属厚度为变量,设计了三因素三水平的正交实验,对X65/DSS2205层状双金属复合材料进行激光穿透焊接实验,对不同焊接条件下接头的显微组织进行观察分析,采用EDS面扫方法对焊缝复层区进行成分扫描,测量接头复层侧动电位极化曲线,并比较了基层金属厚度的影响度较焊接速度与激光功率的大小。结果双金属复合板激光穿透焊接接头显微组织在厚度方向存在明显的分层;基层金属厚度为1.2 mm时,复层贵金属元素保留量最大;随着基层金属厚度的减小,接头综合耐腐蚀性能提高;基层金属厚度对接头耐腐蚀性能的影响小于焊接速度和激光功率2个变量;焊接速度为2.5 m/min,激光功率为3500 W,基层金属厚度为0.8 mm时,接头耐腐蚀性能最优。结论基层金属厚度对于复合板激光穿透焊接接头的焊缝复层元素含量、以及接头复层一侧耐腐蚀性能都有较为明显的影响,但相比于焊接速度与激光功率,其影响度相对较小,因此在进行复合板激光穿透焊接时,在选定基层金属厚度后,仍要对焊接速度和激光功率进行优化工艺设计。     

Diffraction Laser-Electronic Fourier Thickness Gage for Monitoring the Thickness of a Large Diameter Lens

The methodology of synthesizing a model for a diffraction laser-optical system for measuring the thickness of large diameter lenses within the framework of engineer-graph procedures for the design, manufacture, and study of a laser-electronic Fourier thickness gage is developed. Nine stages are identified for model synthesis based on successive-parallel sorting of models when considering statement of the problem in designing a laser-electronic Fourier thickness gage. The task of creating a fundamentally new method and provisions for measuring lens thickness is solved by means of an automatic diffraction-geometric-optical method for recording the space-frequency spectrum of the measuring aperture. Schematic analysis is performed and a functional optical scheme is constructed for a two-channel diffraction laser-optical system for measuring lens thickness. A measurement procedure is developed and the Fourier thickness gage developed is studied by experiment. __________ Translated from Izmeritel'naya Tekhnika, No. 10, pp. 30–35, October, 2005.     

基于线激光扫描的核电换热板厚度测量方法研究

为实现核电换热板厚度尺寸的现场快速检测,搭建了面向复杂薄壁零件厚度测量的线激光三维测量系统,针对线性导轨与传感器相向排列特点的位姿标定方法进行了研究,建立核电换热板三维数字化模型,并针对换热板表面曲率缓变的结构特点,提出基于点点距离与空间聚类的厚度尺寸计算方法,实现核电换热板厚度尺寸高效计算。实验结果表明：系统测量精度优于0.15 mm,检测时间≤2 min,计算的换热板平均厚度0.992 1 mm,可满足企业现场(测量精度优于0.2 mm、检测时间≤5 min)检测要求。     

On the Feedforward Control of Hysteresis for a Piezoelectric Plate

This paper discusses the modeling and feedforward control of hysteresis in a Cantor-like piezoelectric plate. The generalized play operator is analyzed in connection with the plate equations. Results show that hysteresis can be reduced to less than 40% when applying the feedforward control. The subject of the paper belongs to the field of dynamics, characterization and control at the micro/nanoscale. The choose of the Cantor-like piezoelectric plate is motivated by its special property to generate the subharmonic waves due to the anharmonic coupling between the extended-vibration (phonon) and the localized-mode (fracton) regimes. This behavior is a benefit for several applications to the mechanics of grippers and manipulators at the micro/nano scale. In spite of this, the nonlinearities make the piezoelectric plates lose their accuracy if not controlled. For that, the generalized play operator is connected in this paper to the plate equations and the control is focused on feedforward or compensation technique with no sensor requirement. Such advantage is appreciated in the micro/nano-scale because existing sensors that have the required performances are hardly embeddable. The results have confirmed that feedforward control can give general performances such as accuracy and speed required for this particular application. Such control is of great interest because the costs, sizes, and performances of existing sensors limit their use in this domain.