QPSK

幅度相位调制解调代码，通用性很强，而且很简单，值得一看，和大家分享了！(Amplitude-phase modulation and demodulation code, very versatile and very simple to see, and everyone shared!)

Sample PLL 3rd order Code

螺旋锥齿轮数控加工过程关键点计算，包括对刀过程、加工过程等（左旋右侧齿面加工）(The spiral bevel gear process key points computing )

采用位置式PID实现炉温控制 采用继电法整定PID参数 (Realized using positional PID temperature control relay method using PID tuning parameters)

说明：  matab遗传算法工具箱以及极限学习机+遗传算法优化压缩包(Genetic Algorithm toolbox for matlab 2020b and Limit learning machine + genetic algorithm optimization package)

说明：  很好的程序哦！蔡氏系统混沌的matlab代码仿真，有lyapunov指数和分岔图的程序，可以用于混沌系统的研究！(Good program! The matlab code simulation of Chua's chaotic system can be applied to the study of chaotic system.)

有助于提升程序员的思想和灵魂 你会看到令人吃惊的方面,我们的大脑是如何工作的,看看你可以战胜系统来提高自己 learnin根特思维能力(Help the programmer s thoughts and soul You‘ll see surprising aspects of how our brains work and see how you can beat the system to improve your own learnin gand thinking skills.)

该代码实现了以2为因子的图像升采样和降采样功能。 降采样包括使用平滑滤波器(with using the averaging filter)和不使用平滑滤波器(without using the averaging filter)两种方法。 升采样包括像素点直接复制(pixel replication method)和线性插值(bilinear interpolatoin method)两种方法。 降采样方法和升采样方法共有4种组合。程序运行后，给出了一个原始图片和四个结果图片。 图片1.原始图片。 图片2.平滑滤波器降采样&像素点直接复制升采样。 图片3.平滑滤波器降采样&线性插值升采样。 图片4.不使用平滑滤波器降采样&像素点直接复制升采样。 图片5.不使用平滑滤波器降采样&线性插值升采样。 (The code to achieve a 2-factor image upsampling and downsampling function. Down-sampling (with using the averaging filter) and do not use smoothing filter (without using the averaging filter) are two ways to use the smoothing filter. Upsampling including the pixels copied directly (pixel replication method) and linear interpolation (bilinear interpolatoin method) two methods. Down-sampling method and liters a total of four combinations of sampling methods. The program is running, it shows a picture of an original picture and four results. Picture 1 original picture. Photo 2. Smoothing filter downsampling & the pixel directly copied liter sample. Photo 3. Smoothing filter downsampling & the linear interpolation liter sampling. Picture 4. Smoothing filter down-sampling & the pixels directly copied liter sampling. Picture 5. Use smoothing filter down-sampling & the linear interpolation liter sampling.)

Gauss-Seidel iteration with relaxation (nonlinear equations)

its an rectifier circuit with PWM PI control technique for high accuracy and better output with very low THD.