freRecovery

说明：  采用衰减曲线法计算系统P、PI、PID控制器参数，绘制整定后系统的单位阶跃响应曲线。(The attenuation curve method is used to calculate the parameters of P, PI and PID controllers, and the unit step response curve of the system after setting is drawn.)

说明：  poc 2019 slide 2nd day

易语言官方论坛一位高手写的自动搜索歌词，并以卡拉OK方式显示的软件-Easy to master a language official forum Automatic Writing english lyrics and karaoke software displays OK

opencv编译流程，讲述了如何用cmake编译opencv。(Opencv compilation process)

四边固支板模态求解，包含两个文件，用matlab打开(Four sided clamped plate modal solution, including two documents, open with MATLAB)

2402c的使用书册 详细介绍了2402c器件(2402c the use of books described in detail 2402c device)

部分实现了追踪测速迭代松弛算法，对球谐函数图形进行仿真,一种流形学习算法（很好用）。( Partially achieved tracking speed iterative relaxation algorithm, Of spherical harmonics graphic simulation, A fluid manifold learning algorithm (good use).)

自己做的第一个C++小游戏，就是纸牌接龙。用的最原始的控制台程序写的。玩起来比较纠结，因为字体太小，而且花色不太好辨认！（但是可以在控制台窗口中进行字体设置。）输入的时候一定要输入整数，因为没有设置纠错机制。希望大家多多支持哈！

压电悬臂梁，本振方程的构建，输出电压，共振频率的选择(Piezoelectric cantilever beam, the construction of the local vibration equation, the output voltage, the selection of resonance frequency)

说明：  无语了，为啥要20字，哈哈哈哈哈哈哈哈，今天天气不错(Speechless, why 20 words, ha ha ha ha ha ha ha ha ha, the weather is good today)