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英文翻译外文文献翻译398英文外文翻译英汉对照LabVIEW三小时课程.doc
英文翻译外文文献翻译398英文外文翻译英汉对照LabVIEW三小时课程
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英文翻译外文文献翻译398英文外文翻译英汉对照LabVIEW三小时课程,机械毕业设计英文翻译
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浙江工业大学浙西分校信电系毕业设计（论文） I LabVIEW Three Hour Course This zip file contains material designed to give students a working knowledge of LabVIEW in a 3 hour timeframe. The contents are: Ex0-Open and Run a Virtual Instrument.doc. step by step instructions for the .open and run. exercise. Ex1-Convert C to F.doc . step by step instructions for Exercise 1. The slides can be presented in a three hour lab, or three one-hour lectures. Depending on the time and resources available in class, you can choose whether to assign the exercises as homework or to be done in class. If you decide to assign the exercises in class, it is best to assign them in order with the presentation. This way the students can create VIs while the relevant information is still fresh . The notes associated with the exercise slide should be sufficient to guide the students to a solution. The step-by-step instructions provide the student with an easy means to complete the exercise, but if you decide to assign the exercises outside of a classroom, you may find it useful to print out the abbreviated directions from the exercise slide and hand them to the students as an assignment. The exercises can be submitted via email to a grader. This course prepares you to do the following: . Use LabVIEW to create applications. . Understand front panels, block diagrams, and icons and connector panes. nts浙江工业大学浙西分校信电系毕业设计（论文） II . Use built-in LabVIEW functions. . Create and save programs in LabVIEW so you can use them as subroutines. This course does not describe any of the following: . Programming theory . Every built-in LabVIEW function or object . Analog-to-digital (A/D) theory LabVIEW programs are called virtual instruments (VIs). nts浙江工业大学浙西分校信电系毕业设计（论文） III Stress that controls equal inputs , indicators equal outputs. Each VI contains three main parts: Front Panel . How the user interacts with the VI. Block Diagram . The code that controls the program . Icon/Connector . Means of connecting a VI to other VIs . The Front Panel is used to interact with the user when the program is running. Users can control the program, change inputs, and see data updated in real time. Stress that controls are used for inputs- adjusting a slide control to set an alarm value,turning a switch on or off, or stopping a program. Indicators are used as outputs. Thermometers, lights, and other indicators indicate values from the program. These may include data, program states, and other information. Every front panel control or indicator has a corresponding terminal on the block diagram. When a VI is run, values from controls flow through the block diagram, where they are used in the functions on the diagram, and the results are passed into other functions or indicators. The front panel is the user interface of the VI. You build the front panel with controls and indicators, which are the interactive input and output terminals of the VI, respectively. Controls are knobs, pushbuttons, dials, and other input devices .Indicators are graphs, LEDs, and other displays. Controls simulate instrument input devices and supply data to the block diagram of the VI. Indicators simulate instrument output devices and display data the block diagram acquires or generates .In this picture, the Power switch is a boolean control. A boolean contains either atrue or false value. The value is false until the switch is pressed. When the switch is pressed, the value becomes true. The temperature history indicator is a waveform graph. It displays multiple numbers. In this case, the graph will plot Deg F versus Time (sec). nts浙江工业大学浙西分校信电系毕业设计（论文） IV The block diagram contains this graphical source code. Front panel objects appear as terminals on the block diagram. Additionally, the block diagram contains functions and structures from built-in LabVIEW VI libraries. Wires connect each of the nodes on the block diagram, including control and indicator terminals, functions, and structures. In this block diagram, the subVI Temp calls the subroutine which retrieves a temperature from a Data Acquisition (DAQ) board. This temperature is plotted along with the running average temperature on the waveform graph Temperature History. The Power switch is a boolean control on the Front Panel which will stop execution of the While Loop. The While Loop also contains a Timing Function to control how frequently the loop iterates. LabVIEW 7.0 introduced a new type of subVI called Express VIs. These are interactive VIs that have a configuration dialog box that allows the user to customize the functionality of the Express VI. LabVIEW then generates a subVI based on these settings. nts浙江工业大学浙西分校信电系毕业设计（论文） V Standard VIs are VIs (consisting of a front panel and a block diagram) that are used within another VI. Functions are the building blocks of all VIs. Functions do not have a front panel or a block diagram. If automatic tool selection is enabled and you move the cursor over objects on the front panel or block diagram, LabVIEW automatically selects the corresponding tool from the Tools palette. Toggle automatic tool selection by clicking the Automatic Tool Selection button in the Tools palette. Use the Operating tool to change the values of a control or select the text within a control. Use the Positioning tool to select, move, or resize objects. The Positioning tool changes shape when it moves over a corner of a resizable object. Use the Labeling tool to edit text and create free labels. The Labeling tool changes to a cursor when you create free labels. Use the Wiring tool to wire objects together on the block diagram. nts浙江工业大学浙西分校信电系毕业设计（论文） VI . Click the Run button to run the VI. While the VI runs, the Run button appears with a black arrow if the VI is a top-level VI, meaning it has no callers and therefore is not a subVI. . Click the Continuous Run button to run the VI until you abort or pause it. You also can click the button again to disable continuous running. . While the VI runs, the Abort Execution button appears. Click this button to stop the VI immediately. Note: Avoid using the Abort Execution button to stop a VI. Either let the VI complete its data flow or design a method to stop the VI programmatically. By doing so, the VI is at a known state. For example, place a button on the front panel that stops the VI when you click it. . Click the Pause button to pause a running VI. When you click the Pause button, LabVIEW highlights on the block diagram the location where you paused execution. Click the Pause button again to continue running the VI. . Select the Text Settings pull-down menu to change the font settings for the VI, including size, style, and color. . Select The Align Objects pull-down menu to align objects along axes, including vertical, top edge, left, and so on. . Select the Distribute Objects pull-down menu to space objects evenly, including gaps, compression, and so on. . Select the Resize Objects pull-down menu to change the width and height of front panel objects. . Select the Reorder pull-down menu when you have objects that overlap each other and you want to define which one is in front or back of another. Select one of the objects with the Positioning tool and then select from Move Forward, Move Backward, Move To Front, and Move To Back. . Click the Highlight Execution button to see the flow of data through the block diagram. Click the button again to disable execution highlighting. . Click the Step Into button to single-step into a loop, subVI, and so on. Singlestepping through a VI steps through the VI node to node. Each node blinks to denote when it is ready to execute. By stepping into the node, you are ready to single-step inside the node. . Click the Step Over button to step over a loop, subVI, and so on. By stepping over the node, you execute the node without single-stepping through the node. . Click the Step Out button to step out of a loop, subVI, and so on. By stepping out of a node, you complete single-stepping through the node and go to the next node. nts浙江工业大学浙西分校信电系毕业设计（论文） - 1 - LabVIEW三小时课程 译者 03 电气 曹顺 200202040202 这个压缩文件包含的材料是为学生在 3 个小时 内了解 LabVIEW 运行的知识而设计。内容是 : 对 LabVIEW 这个软件的说明 练习 0：打开和运行的仪器 .doc逐步按照指示作 “打开和运行 ”的练习。 练习 1：把 C 转变为 F按照逐步的指示做练习 幻灯片将被在三小时课时 、 或三次一小时的演讲中提到。根据时间和可利用的资源，可以选择是否将课后作业分几次完成。如果你决定分几次完成 , 这将是最佳的将软件分几次有条理的介绍， 这样学生就能获得最新的知识。笔记与 相关练习，将充分引导学生对幻灯片的解答。 逐步的指示为学生提供了简便的方法来完成练习 , 但如果你决定在课外分 几 次练习 , 你 也 可以用幻灯片形式，这样就简练了对学生的课后任务。 练习可以通过电子邮件 方式 交给导师。 这是课程的主要目的。 这个课程要求准备做 到 以下几点： 1 使用 LabVIEW 创建和应用 2 了解前面板、框图、和控件与连接器窗口 3 使用固定的 LabVIEW 功能。 4 在 LabVIEW 中产生并保存的程序 ， 能把它们作为子程序使用。 这个课程不描述下列任何的内容： 1 编程的原理 2 每个固定的 Lab VIEW 作用或对象 3 Analog-to-digital (A/D) 接口原理 nts浙江工业大学浙西分校信电系毕业设计（论文） - 2 - LabVIEW程序叫做虚拟的工具。 (VIs) 强调控件的输入和指示器的输出 每个 VI包含三个组成部分 前面板：图形用户界面 框图：定义 VI 功能的图形化源代码 控件与连接器窗口： VI 之间的相互连接 当程序正在进行的时候 , 前面板是用来和用户交流沟通的。用户能控制程序的输入变化，而且能看到数据在程序中的变化。程序正常运行时，单步运行功能是禁用的，只有单击 “暂停 ”按钮，才能使单步运行功能变为 可用，控件被当作输出使用。 温度、光线等其他控件用来显示程序的数值。这些控件包括数据、程序状态和其他信息。 每个前面板控件合指示器都有个电路连接示意图。当 VI 被运行时，控件用来控制程序中的图表和数值， 他们被使用并在前面板上显示。 nts浙江工业大学浙西分校信电系毕业设计（论文） - 3 - 前面板是用户界面 VI,.用控件和指示器建立前面板，用连线连接 VI 的输入和输出。 控件包括数字、滑杆、旋钮和其他数值控制器，指示器是各种图表、发光二极管和其他信息的显示。控件的模拟输入为框图中的 VI 提供数据。指示器在框图中模拟输出并显示数据。 在这张图片中， 功率开关是一个 boolean 控制器。 boolean控制器有真和假两种显示。当开关显示是假的时候，程序一直运行，直到数值为真。温度历史记录指示器是一个波形图表，它显示多重数值。在这种情况下图表将显示波形对事件的函数。 框图包含程序图形的源代码，能在前面板上体现。 另外 ,框图结构包含 LabVIEW VI作用和结构。线连接每个结构图 , 包括控制和显示结构和作用。 在这个框图中， sub VI 临时从数据采集的子程序 (DAQ) 检索温度。这个温度在信号波形图与历史平均温度一起被体现。其电源开关时一个 boolean 控制器， boolean 控制器能停止前面板上整个回路的运行。在 while
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