虚拟仪器技术-实验.pptVIP

虚拟仪器技术 数组 自动索引 数组函数 函数的多态性 自动索引输入 将自动把循环次数 设置为数组长度 计数端口数等于 数组中元素数 簇 簇函数 Error Clusters 簇 在前面板上创建簇 1. Select a Cluster shell from the Array Cluster subpalette 在程序框图中创建簇常量 簇的顺序 使用簇与子VI交换数据 Use clusters to pass several values to one terminal Overcomes 28-terminal limit Simplifies wiring 簇函数— Bundle 簇函数— Unbundle Error Cluster Error Cluster Details Status is a Boolean value that reports TRUE if an error occurred. Most VIs, functions, and structures that accept Boolean data also recognize this parameter. Code is a signed 32-bit integer that identifies the error numerically. A non-zero error code coupled with a status of FALSE signals a warning rather than a fatal error. Source is a string that identifies where the error occurred. Error Handling with Clusters LabVIEW does not handle errors automatically. In LabVIEW, you can make these error handling decisions on the block diagram of the VI. Error handling in LabVIEW follows the dataflow model. Just as data flow through a VI, so can error information. Wire the error information from the beginning of the VI to the end. Simple Error Handler Using While Loops for Error Handling Waveform Chart Waveform Graph XY Graphs Intensity Graph Wiring to Charts Modifying Chart Properties 控件 Charts and Graphs Right-click and select Visible Items to view the following items: Plot Legend Digital Display Scrollbar X and Y Scale Graph Palette Scale Legend Chart and Graph Use Summary Intensity Plots and Graphs 字符串 字符串函数 文件输入操作 文件输出操作 Edit Format String File Input and Output Write to File Example Reading Data from a File Formatting a Spreadsheet String Creating a Spreadsheet File Write LabVIEW Measurement File Includes the open, write, close and error handling functions Handles formatting the string with either a tab or comma delimiter Merge Signals function is used to combine data into the dynamic data type 仿真信号的产生 信号的处理 数字滤波器 曲线拟合 上图波形Char一次一个点的方式接收数据 下图波形Chart是以一次接收一个簇数据的方式描绘出三个Temp输出数据的实时变化轨迹，请注意流程图中Cart端口