matlab

主成分分析方法在各个变量之间相关关系研究的基础上，用较少的新变量代替原来较多的变量，而且使这些较少的新变量尽可能多地保留原来较多的变量所反映的信息一种方法。(Principal Component Analysis in the relationship between the various variables on the basis of the study, with fewer new variables replace the original more variable, but made them less a new variable as much as possible to retain the original variables that reflect more information methods)

线性调频信号是典型的脉冲压缩信号，在雷达波形设计中要重要的作用。本实例给出了调频雷达中混入正弦波噪声和高斯噪声时如何抑制噪声从而恢复调频信号的过程(LFM signal is a typical pulse compression signal, the radar waveform design to an important role. This example shows the sine wave frequency modulated radar mixed with noise and Gaussian noise, how to suppress the noise FM signal to the process of recovery)

pso pid的研究与控制，有源程序及simulink模型，分三个模块(pso pid)

A Discrete 3-Phase ProgrammableSource block is used to generate a 1 pu, 15 degrees positive sequence voltage. At t = 0.05 s the positive sequence voltage is increased to 1.5 pu. At t = 0.1 s an unbalance is introduced by adding a 0.3 pu negative sequence component with a phase of -30 degrees. The magnitude and phase of the positive-sequence component is evaluated in two diiferent ways: 1) Sequence calculation of phasors using Fourier analysis and 2) abc to dq0 transformation. Math Function and Trigonometric Function blocks are used to evaluate the magnitude and phase of the positive sequence from the d and q components: V1 = sqrt(Vd^2 + Vq^2) , Phi1 = atan(Vq/Vd))

matlab based parameter indicator ckt

粒子群算法PID，利用粒子群算法优化PID参数，simulink，代码(Particle swarm optimization (PID), using particle swarm optimization (PSO) to optimize PID parameters, Simulink, code)

说明：  功率谱繁衍生成时域序列随机风-谐波合成法(Generate Random wind)

Normally boxplot plots the whiskers with a maximum length based on the distance between the 25th and 75th percentile. This script uses boxplot but plots the whiskers for a specified percentile and only plots the outliers beyond the new whiskers. Note that the percentile is defined as the data point just beyond the calculated percentile. For example, if the 98th percentile lies between the 4th and 5th highest data points, then the 4th highest data point will be considered the 98th percentile, the whisker will extend to the 4th highest, and only the 4 highest values will be plotted as outliers.

关于预测的matlab源程序，很实用的，很有参考价值的(forecasting projects Matlab source, it is predictable and practical, a good reference)

单极性PWM控制方式Simulink仿真，很简单，便于电力电子初初学入门者学习，里面还加了一个模拟滤波器，也很简单，但想法非常重要 (Unipolar PWM control mode Simulink simulation is very simple, easy beginner beginners to learn the beginning of the power electronics, which also added an analog filter is also very simple, but the idea is very important)