快速FFT变换

说明：  使用labview实现波形包络检波，可以当子VI使用(Using LabVIEW to realize waveform envelope detection can be used as sub-VI)

说明：  用labview做了一个火车故障检测系统，靠软件仿真(Labview is used to make a train fault detection system, by software simulation)

本程序是基于LABWINDOWS/CVI 的，主要是通过串口采集下位机信息，然后显示状态信息并通过串口发送命令字节。(The program is based on LABWINDOWS/CVI.It get message from RS232and display status,then send command by RS232.)

利用DAQ助手实现的基于LABVIEW的示波器，可通过数据采集卡实现各种波形显示和尺度调节(DAQ assistant to achieve the use of LABVIEW based oscilloscope, through the data acquisition card to achieve a variety of waveform display and scale adjustment)

基于matlab的直流斩波电路（buck电路）仿真(buck circuit simulation)

以永磁同步电机的控制为背景，设置电机与上位机的串口Labview编程 (In control of permanent magnet synchronous motor as the background, setting machine and the superordination machine serial interface Labview programming )

应用labview实现信号的改进经验模态分解，对初学者有所帮助(Labview is applied to realize the improved empirical mode decomposition of signal, which is helpful for beginners)

说明：  西门子1200 基于labview的s7协议通讯，延时几毫秒(Siemens 1200 S7 protocol communication based on LabVIEW, delay several milliseconds)

在NI LabView平台上结合TCP/IP协议进行数据传输的工作方法，并给出对工业现场数据采集传送与监控的仿真实例(NI LabView platform combined with TCP/IP protocol for data transmission methods, and simulation examples are given on the transmission and monitoring of industrial field data collection)

通过输入用户名和密码后登录，实现输入正确和错误提示、登录前禁用并灰显读取按钮、登录后启用读取按钮、读取并显示文本文件内容、加密程序框图查看操作。(By inputting user name and password and login, we can input correct and error prompts, disable and gray display the reading button before login, enable the reading button after login, read and display the contents of text files, and view the encrypted program block diagram.)