closed_loop1

SNR calculation function on Matlab

matlab软件的使用方法，很好，很清晰。。。(Matlab about software to use, very good, very clear. . .)

说明：  正交试验方差分析在matlab上的运行方法，是学习matlab的一个重要步骤，直接解压运行(Orthogonal method of analysis of variance run in matlab, is an important step in learning matlab direct decompression operation)

基于matlab的PIV算法，简单易懂，专为初学者编写。(A Simple and easy to understand PIV algorithm, designed for beginners.)

说明：  粒子群算法初步讲解，粒子群算法分类，标准粒子群算法的实现(Preliminary analysis of particle swarm optimization)

轨迹跟踪---船舶航迹控制，典型的欠驱动控制问题。两种算法，采用了matlab---simulink，直观明了。(Sailing ship trajectory tracking control, a typical under-actuated control. Two algorithms using matlab--- simulink, intuitive and clear.)

数学实验中用matlab完成的句柄图形和图形用户界面制作(Mathematics experiment with matlab finish the handle to the graphics and the graphical user interface production)

commande and control the qudrirotor

遗传粒子群和混沌粒子群进行FIR滤波器的设计，并进行对比，滤波器可改，可寻到最优解！(Genetic particle swarm and chaotic particle swarm FIR filter design, and contrast, the filter can be changed, the hopes of finding the optimal solution!)

余弦波是渐变的，当ωt+φ的取值变化量很小时，Y的变化量也是很微小的。余弦波的这一特性保证了嵌入水印后相邻字符灰度值差别不大，人眼无法识别，从而保证了水印的不可见性和图像质量。(Cosine wave is gradual, and when ωt+ φ values variation is very small, Y amount of change is very small. Cosine waves This feature ensures that watermarked gray value of adjacent character is not very different, the human eye does not recognize, thus ensuring the invisibility of watermark and image quality.)