threemachines

说明：  输入一个整数，求它的各位数字之和及位数. 例如234的各位数之和是9，位数是3。(inport a number putout anumber aaaaaaaa)

This function made recognize of letters

基于维纳滤波的语音增强matlab程序，内含VAD，滤波效果良好，推荐！(weiner filter including vad,based on matlab )

夫琅禾费衍射的几个程序，有单缝衍射，多缝衍射，和矩孔的衍射。(Fraunhofer diffraction of several procedures, single-slit diffraction, multi-slit diffraction, diffraction and the moment the hole.)

Huffman code的matlab程序，用一幅图像作为training image得到像素的Huffman编码，然后编码另外一幅图像，求得average code length。(Huffman code of matlab program, with an image as a training image pixel Huffman coding, then coded another image obtained average code length.)

接地技术最早是应用在强电系统（电力系统、输变电设备、电气设备）中，为了设备和人身的安全，将接地线直接接在大地上。由于大地的电容非常大，一般情况下可以将大地的电位视为零电位。后来，接地技术延伸应用到弱电系统中。对于电力电子设备将接地线直接接在大地上或者接在一个作为参考电位的导体上，当电流通过该参考电位时，不应产生电压降。然而由于不合理的接地，反而会引入了电磁干扰，比如共地线干扰、地环路干扰等，从而导致电力电子设备工作不正常。可见，接地技术是电力电子设备电磁兼容技术的重要内容之一，有必要对接地技术进行详细探讨。(Grounding technology was first applied in strong electric system (power system, power transmission equipment, electrical equipment), in order to equipment and personal safety, the ground wire directly connected to the earth. Because the earth capacitance is very large, under normal circumstances can be considered to be zero potential earth potential. Later, grounding techniques applied to extend the weak system. For power electronic devices directly connected to the ground wire on the ground or connected to a reference potential as a conductor, when the current through the reference potential, and should not generate voltage drop. However, due to unreasonable ground, but will the introduction of electromagnetic interference, such as co-ground interference, ground loop interference, resulting in power electronic equipment is not working properly. Visible, grounding technology is an important part of power electronic equipment EMC technology, it is necessary for grounding techniques disc)

现代通信系统——使用matlab 源程序(Modern communications systems- the use of matlab source)

用C语言编写的matlab异步电机矢量控制例程(Using C language Matlab vector control of asynchronous motor programmes )

灰色系统的matlab实现程序!可以预测未来态势发展(Gray system procedures matlab realize! Can predict the future trend of development)

一篇关于“MATLAB环境下控制系统实时仿真实验的研究”的大论文，很详细。(Essay on " MATLAB environment control system for real-time simulation of a" big paper in great detail.)