HUIDU

pfc power factor correction and bldc

说明：  本文提出了一种基于混沌加密的DCT域二值图像数字水印算法.该算法首先利用混沌序列将含有版权信息的有意义二值图像水印进行加密,然后利用人眼视觉系统(HVS)的特性将原始载体图像进行块分类,最后将不同强度的水印分量嵌入到不同类的图像块DCT中频系数中去.利用混沌序列对水印进行加密,使水印本身具有安全性,对数字作品进行双重保障.通过高斯噪声,椒盐噪声以及JPEG压缩和剪切等攻击试验,表明了该算法具有较好的鲁棒性.(Encryption in DCT domain is proposed. Firstly, the meaningful binary image watermark containing copyright information is encrypted by using chaotic sequence, and then the original image is classified by using the characteristics of human visual system (HVS), Finally, the watermark components with different intensities are embedded into the DCT intermediate frequency coefficients of different types of image blocks. Chaotic sequences are used to encrypt the watermark, so that the watermark itself has security and double protection for digital works. Experiments on Gaussian noise, salt and pepper noise, JPEG compression and clipping show that the algorithm has good robustness)

This code calculates frame difference to detect moving object in video

计算中间接轴在正弦激励下的动态特性，最大剪切应力、最大等效应力、弯曲应力等。(Axis in the calculation of indirect dynamic characteristics under sinusoidal excitation, the maximum shear stress, the maximum equivalent stress, bending stress and so on.)

MATLAB控制系统仿真与设计实例，欢迎大家参考。(MATLAB simulation and control system design example, we welcome the reference.)

这个matalb程序是系统仿真与建模的两份实验程序，主要以simulink仿真为主。(This matalb program is a system simulation and modeling two experimental procedures, mainly in simulink simulation based.)

应用于三自由度车辆模型的扩展卡尔曼滤波程序(Extended Kalman Filter controllrt for Three degree of freedom vehicle model)

MIMO system implementation

结合DCT和NNC进行人脸识别。先利用DCT提取特征，然后利用最近邻分类器分类，在ORL人脸库上测试效果不错。(The combination of DCT and NNC for face recognition. First DCT Feature Extraction, and then use the nearest neighbor classifiers, good test results on the ORL face database.)

自己写的nbcs，但是效果还没有普通BCS方法好，重建采用SL0，自行下载(Write your own nbcs, but the results are not good ordinary BCS method, reconstruction using SL0, to download)