dft

自己做的高压直流输电的半边模型，采用定电流控制。在普通12脉波高压直流输电的基础上，替换b、c相的变压器为移相变压器，消除了11、13次谐波。(HVDC own half model, using the constant current control. On the basis of the normal 12-pulse HVDC, replacing b, C-phase transformer for the phase-shifting transformer, eliminating 11,13 harmonics.)

DCT and Image Compression In the JPEG image compression algorithm, the input image is divided into 8-by-8 or 16-by-16 blocks, and the two-dimensional DCT is computed for each block. The DCT coefficients are then quantized, coded, and transmitted. The JPEG receiver (or JPEG file reader) decodes the quantized DCT coefficients, computes the inverse two-dimensional DCT of each block, and then puts the blocks back together into a single image. For typical images, many of the DCT coefficients have values close to zero these coefficients can be discarded without seriously affecting the quality of the reconstructed image. The example code below computes the two-dimensional DCT of 8-by-8 blocks in the input image, discards (sets to zero) all but 10 of the 64 DCT coefficients in each block, and then reconstructs the image using the two-dimensional inverse DCT of each block. The transform matrix computation method is used.

fit in processing with function

说明：  介绍了汽包锅炉燃烧控制系统的控制任务、量间关系、原则性控制方案、传统控制方法,以及解耦控制方法的发展 ,引入了 PID型神经网络控制系统的结构、学习算法、初始权值参数选取. MATLAB仿真结果表明 ,该控制系统对多变量强耦合时变的锅炉燃烧控制对象具有良好的解耦性能和自学习控制特性.(The control tasks, the relations between physical variables, the fundamental controlschemes, the conventional controlmethodsof the control system for steam drum boiler combustion)

说明：  一个旅行商优化免疫算法的MATLAB源代码.(A matlab platform for artificial immune algorithm .)

简单实用的基于偶排列的多相滤波吗matlab代码(Simple and practical, based on the even of a polyphase filter matlab code)

this code simulates phase array antena in matlab

matlab 中4-QAM调制 RLS 算法仿真 (the matlab in 4-QAM modulation RLS algorithm simulation)

图像处理的编程入门，包括去噪，滤波，膨胀，腐蚀，边缘检测等，十分简单易学(Introduction to image processing programming, including denoising, filtering, expansion, corrosion, edge detection, very easy to learn)

matlab绘制图形完成后，在句柄窗口实现局部放大，通过鼠标键盘的操作来选择放大区域(matlab graphics rendering is completed, the handle of the window to achieve local amplification, through the operation of mouse and keyboard to select the magnified area)