punlen

说明：  单片机模糊控制pid源码，有需要的可以下载看看，可以用于大家参考学习，一起进步(SCM fuzzy control pid source code, there is a need to download can see, can be used for everyone to learn reference, progress together)

对OFDM系统的发送端和接受端信号的频谱进行仿真，还有星座图(On the OFDM system transmitter and the receiving end of the spectrum signal simulation, there are constellation)

Analysis of Digital Modulation with Unequal Power Allocation

Three-phase electric power is a common method of alternating-current electric power generation, transmission, and distribution.[1] It is a type of polyphase system and is the most common method used by electrical grids worldwide to transfer power. It is also used to power large motors and other heavy loads. A three-phase system is usually more economical than an equivalent single-phase or two-phase system at the same voltage because it uses less conductor material to transmit electrical power.[2] The three-phase system was independently invented by Galileo Ferraris, Mikhail Dolivo-Dobrovolsky and Nikola Tesla in the late 1880s.

该程序用数值方法计算rayleigh-lamb波频散方程，得到频散曲线(the program is used to sovle the rayleigh-lamb equation by mumerical method,and the dispersion curve was plot)

A simple OQPSK modulator

在matlab中，利用全局阈值对图像进行图像分割，得到有用的区域(Global threshold image in matlab for image segmentation, get useful area)

说明：  针对串并联无线电能传输互感模型，建立能量传输方程，利用Matlab编程画出负载功率、传输效率等的三维图和二维图。(Aiming at the mutual inductance model of series-parallel radio energy transmission, the energy transmission equation is established, and the load power, transmission efficiency and other three-dimensional and two-dimensional diagrams are drawn by Matlab programming.)

说明：  人体心电信号的滤波，用一个Butterworth低通滤波器，滤除50Hz工频噪声，并采用不同阶数的Butterworth低通滤波器，比较效果(Human ECG signal filtering, using a Butterworth low-pass filter, filter the 50Hz frequency noise, and different orders of Butterworth low-pass filter, compare results)

A Speech Tool Software for Signal Processing Applications