Level-analysis-of-the-code

pca进行特征提取源码，用matlab语言编写，pca即主成分分析(pca source for feature extraction using Matlab language, pca that Principal Component Analysis)

This is helpful for study phase screen

一个带有GUI、Simulink 3D模拟的四旋翼仿真程序。控制参数、目标点可调。使用时先打开simulink模型，再运行GUI_Config.m即可(With a GUI, Simulink 3D simulation of four-rotor simulation program. Control parameters, the target point is adjustable. First open the simulink model, when used, can run GUI_Config.m)

噪声中正弦信号的现代法频谱分析，分析了自相关法、Burg法、协方差法和改进的协方差法对功率谱的影响以及阶数、信噪比、窗长度对自相关法频谱分析的影响。(The influence of autocorrelation method, Burg method, covariance method and improved covariance method on power spectrum and the influence of order, signal-to-noise ratio and window length on the spectrum analysis of sinusoidal signal in noise are analyzed.)

说明：  模型以永磁直驱同步发电机组为研究对象，对包括风力机、发电机及其控制系统等各部分进行控制建模与仿真，接着通过坐标变换，分析并网逆变器在d／q坐标系下的模型，采用基于d轴电网电压定向矢量控制，并通过前馈补偿，实现有功、无功的解藕独立控制.(The model takes the permanent magnet direct drive synchronous generator set as the research object, and carries on the control modeling and simulation to each part, including wind turbine, generator and its control system, and then analyzes the model of grid-connected inverter in d coordinate system through coordinate transformation. The voltage oriented vector control based on d-axis power network and feedforward compensation are adopted to realize the decoupling independent control of active and reactive power.)

说明：  基于simulink的互感器仿真，改变参数可以模拟不同因素对线性传变的影响。(Simulink simulation based on the transformer to change the parameters of different factors can simulate the impact of change on the linear transmission.)

Matlab code generator in c

低通滤波器，用Matlab编程实现低通滤波器的功能(Low-pass filter, using Matlab programming function of the low-pass filter)

文章重点讲述了MATLAB与Excel间的数据交换应用和原理。(This paper focuses on the application and principle of data exchange between MATLAB and Excel.)

附件中的pdf文件是韩国作者08年在Automatica上发表的文章。本代码给出了文章中定理1的线性矩阵不等式的求解程序，通过给定不同的a来求解最大的b,进而得到界定时滞系统的最小的椭圆。(Attached pdf file of 2008 in South Korea articles published in Automatica. This code is given in Theorem 1 article LMI solver through a given different to solve the biggest b, then get the minimum of delay systems defined ellipse.)