PSO_PID

谱方法的一本教程及书中配套matlab源码(Spectral method, and a tutorial book, matching matlab source code)

通信的数字化是它能与计算机技术和数字信号处理技术相结合的基础，而实现通信数字化的前提是信源能提供的各种用于传递的消息，例如语音、图像、数据、文字等都必须以数字化形式表示。而信源编码是数字通信系统中的重要组成部分，他是保证信号有效传输的一种重要方式。霍夫曼编码依据字符出现的概率来构造异字头的平均长度最短的码字，有时称之为最佳编码，其优越的性能被广泛使用在数字通信系统中。霍夫曼编码已经成为数据压缩的灵魂算法。本文介绍了无失真编码算法的构造，霍夫曼编码的规则和特点，同时分析了对信源进行优化的方法，最后通过MATLAB仿真来讨论比较二元霍夫曼编码、三元霍夫曼编码以及信源扩展编码的效率，来实现霍夫曼码的优化构造。(The digital communication is it can and computer technology and digital signal processing technology in combination of the base, and realize the digital communication is the premise of source can provide all kinds of used to deliver news, such as voice, video and data and text must take the digital form said. And the source coding digital communication system is the important component, he is to ensure the effective transmission signal is an important way. Huffman coding based on the probability of characters appear to construct different "the average length of the shortest code words, sometimes called the best coding, superior performance is widely used in digital communication system. Huffman coding has become the soul of data compression algorithm. This paper introduces the structure of the encoding algorithm without distortion, Huffman coding rules and characteristics, and analysis of the source of the optimization method, and finally by MATLAB simulation to discuss compares two yu)

使用SRUKF（平方呢无迹卡尔曼滤波算法）进行双星编队的轨道状态的估计，并且分析了不同编队构形的可观测性(square-root unscented kalman filter was designed to accomplish the optimal estimation of double satellite. )

基于matlab的曲线标记，实现了不同曲线的正确标记，以直观体现数据的规律。(Different curve matlab curve mark the correct mark, the law of visual expression data.)

inverter model explain s wid the filer connected in series for sinosodal wave form.

有限元方法计算中3角形单元3节点模型建立，可解决平面应力和应变问题(Finite element method to calculate the Triangle 3 nodes model, which can solve the problem of plane stress and strain.)

Facial Feature Extraction matlab code

convert from gray to rgb

利用古典显式差分格式求解抛物型偏微分方程(parabolic partial differential equation)

c est un exemple d un pendule inversé avec moteur a courant continu commandé par la commande LQR SUR MATLAB simulink