pcm_matlab

matlab下实现降噪，功率谱计算。％程序中设定采样点数为256个，采样频率为10000hz， ％输入信号为随机噪声和两个正弦的合成信号 ％设定的滤波器的截止频率为3500hz ％通过挈比雪肤滤波器，运行程序，比较滤波前后的频域波形 ％滤波去除了高频信号(matlab achieve noise reduction, power spectrum calculation. Sampling procedure set for 256 points, the sampling frequency of 10000hz, input signal for the random noise and the two sinusoidal signals synthetic filter set a cut-off frequency 3500hz manner than through the filter雪肤, run procedures, compared before and after filtering in frequency domain waveforms filtering in addition to high-frequency signals)

一个FastICA的实例程序，希望对学习ICA的同志有所帮助(FastICA instance a program, I hope to learn ICA comrades help)

通过模拟鲸鱼捕食的特点而开发的一种鲸鱼算法。(A whale algorithm developed by simulating the predation characteristics of whales.)

该算法用于自回归输入模型，是一种迭代的算法。其基本思想是基于对数据先进行一次滤波处理，后利用普通最小二乘法对滤波后的数据进行辨识，进而获得无偏一致估计。但是当过程的输出信噪比比较大或模型参数较多时，这种数据白色化处理的可靠性就会下降，辨识结果往往会是有偏估计。数据要充分多，否则辨识精度下降。模型阶次不宜过高。初始值对辨识结果有较大影响。(The algorithm used for autoregressive input model, it is a kind of iterative algorithm. The basic idea is based on data to conduct a filtering processing, after using ordinary least square method to identify the data filter, and then obtain unbiased consensus estimates. But when the process output signal-to-noise ratio is larger or model parameters are too, this kind of data white processs reliability will drop, identification results tend to be biased estimate. Data should fully, otherwise the identification accuracy down. Model order time shoulds not be too high. Initial value to identification results have great influence on.)

矢量控制的坐标变换，可以实现park变换(Coordinate transformation vector control can be achieved park transformation)

数字伺服系统MATLAB仿真，使用simulink做的，PID控制(ACMmodelnps.mdl MATLAB example，PID CONTROL)

The Finite Element Method for 3D Thermomechanical Application

This matlab program compares the results of different window design methods for finite impulse response filters (FIRs): the rectangular window, Blackman window, Bartlett window, Hamming window and the Hanning window.

本源码是matalb解决数学中经典的tsp问题的代码，算法思想是遗传算法(The source is matalb tsp solve mathematical problems in the classical code, the algorithm idea is that genetic algorithms)

optimal power flow. a comon method for power flow in distribution system.