chpt3_9

计算时间信号特征值的matlab函数文件(function used for calculating feature values of a time signal)

PABX with 8 channels

matlab code for implementation of y bus

利用夹角余弦距离进行样本数据分类。实现步骤主要分为以下两部分：a、待测样品X与训练集里每个样品Xi的距离采用夹角余弦距离公式计算。b、循环计算待测样品和训练集中各已知样品之间的距离，找出距离待测样品最近的已知样品，该已知样品的类别就是待测样品的类别。(Using the sample data classification Angle cosine distance.Implementation steps are divided into the following two parts: a, sample under test with each of the samples in the training set X Xi distance using the included Angle cosine distance formula.B, loop calculation under test samples and the distance between the known samples training focus, find out the known closest to the sample under test samples, the samples of known category is the category of the sample under test.)

倒立摆的仿真, 使用matlab7.1去写mdl file and m-file(Inverted pendulum simulation, the use of matlab7.1 to write mdl file and m-file)

把微分方程的一维经典初值问题的有限插分法：Euler法、改进的Euler法、Admas二步外插法、Admas二步内插法编写成通用子程序，并且利用这些通用子程序解决常微分方程的数值解。(The classical one-dimensional differential equations initial value problem of limited interpolation method: Euler method, improved Euler method, Admas outside the two-step interpolation, Admas two-step interpolation method into a general-purpose subroutine to prepare and use it to solve common subroutines Numerical Solution of Ordinary Differential Equations.)

SAR成像经典MATLAB仿真程序，三种不同的算法，学习雷达成像的学生可以考虑下载(sar imaging by cs)

说明：  此源码是对人工鱼群算法的一种实现，用于无约束连续函数的优化求解，对于含有约束的情况，可以先使用罚函数等方法，把问题处理成无约束的模型，再使用本源码进行求解。仅供学习参考。(This source is a realization of artificial fish school algorithm for unconstrained optimization of continuous functions to solve for the case with constraint, you can first use the penalty function and other methods to deal with the problem into the unconstrained model, then use the source to solve it. Study reference purposes only.)

this code contains coding of ofdm simulation. this may helpfull

超声仿真软件，基于MATLABB，用于声束合成技术可直接使用。 (Ultrasound simulation software, based on MATLABB for beam synthesis technique can be used directly.)