LabVIEW波形求导

采用Labview设计一虚拟函数信号发生器， 通过数据采集卡输出波形信号，调节信号的相关参数(Labview design using a virtual function signal generator, data acquisition card output waveform signal,)

用Labview设计的语音检测系统，亲测可行(Sound detection recognition)

介绍了Labview编程中的堆栈技术，提供demo案例。(This paper introduces the stack technology in Labview programming and provides demo cases.)

说明：  labview实现了多通道串口数据的TDMS保存(LabVIEW realizes TDMS saving of multi-channel serial port data)

本系统可做自动控制原理中的时域分析仿真实验，系统特性如下： 1：可选择仿真系统为一阶、二阶、任意阶 2：可选择信号源为正弦波、三角波、锯齿波、方波（可模拟阶跃信号），并可调节信号源频率、幅值、相位、偏移、方波占空比 3：可选择信号采样率及采样数 4：自动计算传递函数 5：自动计算时域响应参数（增益系数、上升时间、峰值、峰值时间、稳定时间、超调量） 6：波形图同时显示原始信号和响应信号 注：使用本系统需安装labview控制设计与仿真库(The system can do automatic control theory in the time-domain analysis simulation, the system behaves as follows: 1: simulation system can be selected for the first, second, any order 2: select the signal source is a sine wave, triangle wave, sawtooth, square wave (analog step signal), and can adjust the signal source frequency, amplitude, phase, offset, duty cycle square wave 3: the the optional signal sampling rate and the number of samples 4: automatic calculation of the transfer function 5: Automatic calculation domain response parameters (gain coefficient, rise time, peak, peak time, settling time, overshoot) 6: waveform diagram shows both the original signal and the response signal Note: Use the system to be installed LabVIEW Control Design and Simulation library)

第一部分产生最大128位随机数 第二部分用汉明距离检测误码率 第三部分，第一和第二再加调制（BPSK+QPSK）加白高斯噪声通道awgn，得到结果并用图形显示。(part1: source.vi generate a ramdom bit sequence. part2: erro detection get BER via Humming Dacetance. Part3: part 1+ 2, and modelation (BPSK or QPSK), and AWGN,get BER and show it in diagram.)

别处看到的一个非常不错的使用labview编写的TCP/IP协议聊天室(A very nice TCP/IP protocol chat room written in LabVIEW elsewhere)

说明：  界面上可实现新增用户，删除用户，修改密码，及验证用户名和密码(The interface can be used to add users, delete users, modify passwords, and verify user names and passwords)

LABVIEW队列状态机的数据采集系统设计(Design of data acquisition system based on LABVIEW queue state machine)

利用labview的xy图，画一个圆。根据sinx^2+cosx^2 1利用labview的正弦波生成函数画出圆(Use labview s xy chart to draw a circle. According to sinx ^ 2+ cosx ^ 2 1 using labview sine wave generation function to draw a circle)