摘要：A scanning probe microscope(SPM)stage controlled by three stepper motors is designed,which has more flexibilitiesthan that of one motor controlled stage,while the control whom is more *** this project,we build the stageactions in an Arduino microcontroller,and finite state machine(FSM)is also built in the Arduino micro controller to communicatewith a computer and a radio frequency(RF)controller.A special displaying scheme with five states is employed to indicatethe operation of the ***,the stage is fully tested and has a700nm resolution in Z motion of the SPM.

摘要：In this work,an old scanning electron microscope(SEM)is refurbished to enhance its image processing *** to digitally sample and process an analog image is also *** NI PCI-6259 multiple input/output data acquisition(DAQ)board is used to acquire signals originally being sent to an analog display,and then convert the signals into a digital *** output channels are used for raster scan of the horizontal and verticle axes of the image buffer,while one input channel is used to read the brightness signals at various coordinate *** method is used to maximize the DAQ ***,the digitally buffered images are read out to display and saved in a hard *** hardware and software designs of this work are explained in great detail,which can serve as a very good example for fast synchronous DAQ,advanced virtual instrument design and structural driver programming with LabVIEW.

摘要：A simple,stable and reliable virtual logic analyzer is presented. The logic analyzer had two modules:one was the test pattern generation module,the other was the logic monitoring module. Combining the two modules,one is able to test a digital circuit automatically. The user interface of the logic analyzer was programmed with LabVIEW. Two Arduino UNO boards were used as the hardware targets to input and output the logic signals. The maximum pattern update rate was set to be 20 Hz. The maximum logic sampling rate was set to be 200 Hz. After twelve thousand cycles of exhaustive tests,the logic analyzer had a 100% accuracy. As a tutorial showing how to build virtual instruments with Arduino,the software detail is also explained in this article.

摘要：A fully automated atomic force microscope(AFM)is *** mechanical motion of the AFM stage was controlled by three *** fine motion of the AFM was controlled by an MCL one-axis piezo plate.A32.768kHz crystal tuning fork(TF)was used as the transducer with a probe *** acoustic sensor was used to measure the interactions between the probe and the *** SR850lock-in amplifier was used to monitor the TF *** additional lock-in amplifier was used to monitor the acoustic signal.A field programmable gate array(FPGA)board was used to collect the data in automatic *** main controller was coded with LabVIEW,which was in charge of Z-axis scan,signal processing and data visualization.A manual mode and an automatic mode were implemented in the *** can switch the two modes at any time during the *** AFM system showed several advantages during the test *** is simple,flexible and easy to use.

摘要：The purpose of this article is to reduce the barrier of developing a house made scanning probe microscope （SPM）. Here in this paper, we cover all the details of programming an SPM controller with LabVIEW. The main controller has three major sequential portions. They are system initialization portion, scan control and image display portion and system shutdown portion. The most complicated and essential part of the main controller is the scan control and image display portion, which is achieved with various parallel tasks. These tasks are scan area and image size adjusting module, Y axis scan control module, X axis scan and image transferring module, parameters readjusting module, emergency shutdown module, etc. A NI7831R FPGA board is used to output the control signals and utilize the Z-axis real time feedback controls. The system emergency shutdown is also carried out by the FPGA module. Receiving the shutdown command from the main controller, the FPGA board will move the probe to its XYZ zero position, turn off all the high voltage control signals and also eliminate the possible oscillations in the system. Finally, how to operate the controller is also briefly introduced. That messy wires fly back and forth is the main drawback of LabVIEW programming. Especially when the program is complicated, this problem becomes more serious. We use a real example to show how to achieve complex functionalities with structural programming and parallel multi task programming. The actual code showed in this paper is clear, intuitive and simple. Following the examples showed in this paper, readers are able to develop simple LabVIEW programs to achieve complex functionalities.

摘要：首先提出了疲劳寿命的各因素灵敏梯度和灵敏度因子计算新方法,接着对确定性设计变量情况下的圆柱筒结构和含不确定性随机变量情况下的圆柱筒结构的疲劳寿命进行了灵敏性分析,得到了在影响耐压厚壁筒概率疲劳断裂寿命的诸多因素中,材料特性常数c,n的总影响比其它因素的影响大得多,c,n的精确性是计算或评估厚壁筒结构疲劳寿命的关键因素,所得结果对圆柱筒结构的设计、制造与使用提供理论依据。

摘要：分析了国内外石油化工行业生产执行系统的特点,采用分布对象技术,提出了灵活的可组态的生产执行系统体系结构,该体系结构主要由数据平台、业务逻辑和用户界面3个层次构成;针对物料平衡与数据整合的关键问题．提出了基于多维物料移动模型的多层递阶平衡方法;结合石油化工行业的业务知识和领域知识,设计开发了一个炼化一体化的生产执行软件系统——石油化工企业生产执行系统,并在典型企业进行了应用验证．

摘要：文章涉及中国先进研究堆重水浓缩系统的功能、工艺方案和流程设计及系统设计的特点。在系统布置设计中,采用PDSOFT piping配管软件建立了该系统的三维模型,提高了设计效率。

摘要：分析了我国炼化企业的生产执行系统(MES)应用需求,设计了符合炼化企业特点的MES体系结构及其功能模块,并对其关键技术进行了探讨.

摘要：针对化工过程中存在大量非线性问题,目前存在的主要方法为将核算法与偏最小二乘算法相结合(KPLS),相比于KPLS算法,将核与典型相关分析相结合的方法(KCCA)能够最大化两组变量相关性,以达到更好的检测效果。然而KCCA方法不能准确地将数据空间分解成与关键性能指标(KPI)相关和不相关的部分,从而忽略了剩余空间仍然涉及与KPI相关的一些信息的事实。文中提出了一种新的改进的KCCA (MKCCA)方法,该方法对核矩阵的可计算负载进行奇异值分解(SVD),得到一个投影模型,将核矩阵适当地分解为KPI相关部分和不相关部分,然后设计两个统计量进行故障检测。最后利用田纳西伊士曼(TE)过程验证了所提出方法的有效性和优越性。