Lesson-2

Lorenz ecuation soved via Simulink

用Matlab实现的一个卫星自动导航模拟系统，包括GUI设计、模型设计与实现、三维动态仿真等功能，其中运用了两个自动导航的模型，程序里有对模型的简要说明，如果有需要详细说明的，可以和我联系。(using Matlab a simulated automatic navigation satellite systems, including GUI design, Model Design and Implementation, three-dimensional dynamic simulation, and other functions, using two automatic navigation model, there are procedures to model a brief description, if a need for detailed descriptions, and contact me.)

光伏电池阵列输出功率受光照强度和温度变化的影响，因此最大功率点跟踪（MPPT）技术广泛应用于光伏系统中。在所有最大功率点(MPP)控制策略中，扰动观察（P&O）MPPT算法因易实现被广泛应用，然而它的缺点是在稳定工作状态下工作点通过MPP 时会导致能量振荡损耗，并且在光照强度或温度发生突变时表现较差的动态响应。在本文中，提出一种改进型变步长扰动观察MPPT 算法，此方法依据工作点动态调整步长变化，与传统固定步长方法比较，本文提出的方法能有效地提高MPPT 速度和转换效率，通过仿真和实验结果分析，验证了此改进算法的可行性。(PV array output power by light intensity and temperature changes, so the maximum power point tracking (MPPT) technology is widely used in photovoltaic systems. In all the maximum power point (MPP) control strategy, the perturbation and observation (P & O) MPPT algorithm because easy to implement is widely used, but its disadvantage is the steady-state operating point by the MPP causes energy oscillations loss, and in the light intensity or temperature mutated poor performance dynamic response. In this paper, we propose a modified variable step size perturbation and observation MPPT algorithm, this method is based on dynamically adjusting the operating point changes in steps, with the traditional fixed-step methods, the proposed method can effectively improve the speed and efficiency MPPT, The simulation and experimental results verify the feasibility of this algorithm.)

相关向量机(RVM)的matlab源程序，包含快速算法，内含代码使用说明。 RVM采取是与支持向量机相同的函数形式稀疏概率模型，对未知函数进行预测或分类。 优点： (1) 不仅仅输出预测目标量的点估计值,还可以输出预测值的分布. (2) 使用更少数量的支持向量,从而显著减少输出目标量预测值的计算时间. (3) RVM不需要估计过多的参数. (4) RVM对是否满足Mercer 定理的核函数没有限制,适应性更好(Relevance Vector Machine (RVM) of the matlab source code, including fast algorithm that contains code for use. RVM support vector machine is taken the same functional form sparse probabilistic model to predict the unknown function or classification. Advantages: (1) is not only the amount of output predicted target point estimates, but also the distribution of predicted values ​ ​ can be output. (2) using a smaller number of support vectors, thereby significantly reducing the output target amount predicted value calculation time. (3) RVM does not require excessive parameter estimation. (4) RVM meets Mercer theorem on the kernel function is not limited, and better adaptability)

pca and fisher implementation in matlab for feature extraction

Snake Methods for Image 2D

基于LQR的直升机控制系统设计与仿真，matlab程序语言，对控制系统进行了仿真(LQR-based helicopter control system design and simulation, matlab programming language, the control system simulation)

OFDM信号的导频的插入包含LS,LMMSE,线性插值等(OFDM pilot signal insertion include LS, LMMSE, linear interpolation)

plot 3d with matlab with this code you can plot a surface with matlab functions: meshgrid, zeros, rastriginsfcn, meshc, xlabel, ylabel, zlabel, clear, clc

别人的边界元程序，是关于势的边界元源程序，平台matlab(Someone else)