heibaiqi

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..)

将直角坐标系数据转换成极坐标数据，以便绘制主轴轴心轨迹(Converting Cartesian coordinates into polar coordinates to plot axis center trajectory)

LabVIEW开发技术丛书 深入浅出统计过程控制 序言——献给初入质量管理的工程师 谈质量管理，不得不说现在最成功和应用最广泛的6 西格玛管理。参加6 西格玛管理培训的人很容易就坠入统计学的云雾中，每天置身于大量数据的统计分析和报表中，彷佛6 西格玛管理就是做大量的统计分析和报表。 悲哀啊，真的是悲哀~~！这让我想起儿时学习数学的时候，繁多的家庭作业，让我每天置身于大量的计算中，让我感觉数学就是计算，就是大量繁琐的公式，就是大量的背诵和记忆。(LabVIEW Development Technical Series Layman Statistical Process Control Preamble- dedicated engineers entering the Quality Management Talk about the quality of management, have to say that the most successful and most widely used Six Sigma management. Participate in Six Sigma management training, it is very easy to fall into the statistical clouds, daily exposure to a large number of statistical analysis and reporting of data, as if Six Sigma is to do a lot of statistical analysis and reporting. Ah sad, really sad ~~! It reminds me of childhood when learning mathematics, many of homework, let me exposure to a large number of calculations every day, so I feel that the mathematical calculations, is a lot of complicated formulas, is a lot of memorization.)

编写软件为labview2011，功能为读取txt文件中的值，并绘制电平图，设置了双游标，可以自动准确计算出两游标X轴时间差值。txt的内容为上升沿或下降沿的时间信息，首位0代表下降沿，1代表上升沿。后面位的值乘16代表沿的绝对时间(program software is the labview2011, functions is to read txt file values​ ​ , and draw level diagram, set up a dual cursors, you can automatically and accurately calculate the time difference between the two cursors X axis. txt contents of rising or falling time information, the first 0 represents falling, a representative of the rising edge. Followed by 16-bit value represents absolute time along)

说明：  在LabVIEW编程中，如何采用生产者消费者模式，以有效提高代码编程和维护效率。(n LabVIEW programming, how to use producer-consumer mode to effectively improve the efficiency of code programming and maintenance.)

说明：  一本很不错的英文LabVIEW书籍，详细阐述了labview的设计思想和范例。(a very nice book talking about how to design a good LabVIEW program.)

说明：  josn格式解析子程序,可以通过调用完成josn解析(josn paratemar sadfe)

说明：  使用全局变量 VI 实现动态数据从一个 VI 传送到别一个 VI 中。当两个 VI 同时运行时，观察对比两个 VI 的波形图，调节第一个 VI 的滑动 杆，再观察对比两边的波形，最后，按下第一个 VI 里的停止按钮时，第二个 VI 也能接收到停止信号，并停止第二个 VI 的运行。(Using global variable VI to transfer dynamic data from one VI to another Medium. When the two VI are running at the same time, observe and compare the waveform of the two VI, and adjust the sliding of the first VI Then observe and compare the waveforms on both sides. Finally, when pressing the stop button in the first VI, the second VI It can also receive the stop signal and stop the operation of the second VI.)

labview对excel的调用，同时可以向excel进行写入和 删除数据等操作。(labview call for excel, and can carry out operations such as writing and erasing data to excel.)

LabVIEW编程语言实现振动信号的多通道数据采集(LabVIEW programming language to achieve multi-channel data acquisition of the vibration signal)