3.4

说明：  Labview读取Excel，写入Excel(Labview reads Excel and writes Excel)

锁相技术在测控、通信、数字信号处理等众多领域得到了广泛的应用。虚拟锁相环成为锁相环发展趋势之一，根据锁相环路的基本组成及原理，利用LabVIEW软件提供的强大的数值计算和信号分析等能力对锁相环进行设计。实验和仿真结果表明该软件锁相环具有较好的捕获和跟踪性能。利用软件实现的锁相环比硬件锁相环具有更好的灵活性和通用性，同时具有结构简单、参数设计灵活等优点。(Lock-in technique in many areas of monitoring and control, communications, digital signal processing, has been widely used. Became one of the virtual phase-locked loop phase-locked loop trends, according to the basic principles of composition and phase-locked loop, using LabVIEW software provides powerful numerical calculation and signal analysis capabilities such as phase-locked loop design. Experimental and simulation results show that the software PLL has a better acquisition and tracking performance. Use of software than hardware locked loop PLL has better flexibility and versatility, but also has a simple structure, flexible design parameters, etc..)

产品音频信号测试，通过labview做出的建议的声音分析，平率分析对比的功能。(Product audio signal testing, through the voice analysis of the recommendations made by the lab view, flat analysis and comparison function.)

可以实现安川交流电机的调速，检查伺服准备就绪，伺服ON,及调速。(Can achieve Yaskawa AC motor speed, check the servo ready, servo ON, and speed.)

labview相关滤波，相关滤波提取特征频率下的原始信号(labview correlation filtering, correlation filter to extract the original signal characteristic frequency)

LABVIEW工程完整程序，FPGA模块设计(LABVIEW engineering complete program, FPGA module design)

说明：  labview中常常需要显示曲线，并需要制作缩放，设置，浮动游标等功能。本Xcontrol集成了这些功能，这样就不用每次都去写麻烦的曲线操作了！(LabVIEW often needs to display the curve, and needs to make zoom, set, floating cursor and other functions. This XControl integrates these functions, so you don't have to write troublesome curve operations every time!)

选择文件路径读取TDMS文件，选择是否校准，选择数据组名及通道名，对数据进行频谱分析(Spectrum analysis of the data from TDMS file.)

labview调用动态链接库相关说明文档，及调用PMAC动态链接库Pcomm32.DLL的例程(labview called dynamic link library-related documentation, and call PMAC dynamic link library routines Pcomm32.DLL)

对信号进行采集和保存，其采样率默认为信号频率的10倍，并将采集到的信号数据保存到电子表格中(Save signal data acquisition and preservation of the signal, the default sampling rate is 10 times the signal frequency, and collected into a spreadsheet)