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GRE的学习资料，很全的大全~~~想出国的同学注意了~(GRE study materials, it is the whole of the Daquan ~ ~ ~ want to go abroad students attention ~)

基于matlab的PID温控模拟，使用了simulink(Matlab-based simulation of PID temperature control, use the simulink)

说明：  珍藏版，可实现，新K均值聚类算法，分为如下几个步骤： 一、初始化聚类中心 1、根据具体问题，凭经验从样本集中选出C个比较合适的样本作为初始聚类中心。 2、用前C个样本作为初始聚类中心。 3、将全部样本随机地分成C类，计算每类的样本均值，将样本均值作为初始聚类中心。 二、初始聚类 1、按就近原则将样本归入各聚类中心所代表的类中。 2、取一样本，将其归入与其最近的聚类中心的那一类中，重新计算样本均值，更新聚类中心。然后取下一样本，重复操作，直至所有样本归入相应类中。 三、判断聚类是否合理 采用误差平方和准则函数判断聚类是否合理，不合理则修改分类。循环进行判断、修改直至达到算法终止条件。(NewK-means clustering algorithm ，Divided into the following several steps: A, initialize clustering center 1, according to the specific problems, from samples with experience selected C a more appropriate focus the sample as the initial clustering center. 2, with former C a sample as the initial clustering center. 3, will all samples randomly divided into C, calculate the sample mean, each the sample mean as the initial clustering center. Second, initial clustering 1, according to the sample into the nearest principle clustering center represents the class. 2, as this, take the its recent as clustering center of that category, recount the sample mean, update clustering center. And then taking off, as this, repeated operation until all samples into the corresponding class. Three, judge clustering is reasonable Adopt error squares principles function cluster analysis.after clustering whether reasonable, no reasonable criterion revisio)

Ebook Digital Signal Processing (An Introduction with MATLAB and Applications)

matlab设计的数字滤波器，有巴特沃斯，切比雪夫1，切比雪夫2，椭圆四种，分别都有高通，低通，带通几种，天津工业大学课程设计(matlab digital filter design, there Butterworth, Chebyshev 1, Chebyshev 2, oval four, each of which has a high-pass, low-pass, band-pass several, Tianjin Polytechnic University curriculum design)

可以用matlab来验证经典的zipf分布定律。(Can be used to verify the classic zipf matlab distribution law.)

通过非线性扩张观测器可实现被控对象的位置、速度和未知部分观测。在实际控制工程中，可采用本观测器实现无需速度测量的控制，并实现对未知不确定性和外加干扰补偿(Through the expansion of nonlinear observer can realize the location of the controlled object, speed and unknown part of the observation. Can be used in actual control engineering, the observer is to realize the control without speed measurement, and implement the unknown uncertainties and external disturbance compensation)

Direct Power control of Doubly fed induction generator with/without MPPT strategy

PCA Algoritms Iris Data test

在简单的支路始末端节点数据输入的基础上确定配电网拓扑结构表，经过遍历深度优先搜索形成层次结构和节点队列以决定潮流计算的节点顺序。(Whole story in a simple slip end nodes determined on the basis of data input distribution network topology table, after traversing depth-first search form hierarchy and node queue to determine the order flow calculation nodes.)