PSO

正弦信号加载2 的白噪声后的功率频谱图以及加载后的失真度计算(Sinusoidal signal loading of 2 white noise power spectrum and the calculated distortion after loading)

其基本思想是：采用信号与噪声的状态空间模型，利用前一时刻地估计值和现时刻的观测值来更新对状态变量的估计，求出现时刻的估计值。它适合于实时处理和计算机运算。 (The basic idea is: use of signal and noise state-space model, the estimated value of the previous time and are always observations to update the estimated state variables, find an estimate of time there. It is suitable for real-time processing and computing.)

neural network fault find relay

学习bp神经网络的一个例子，有助于理解bp(bp nn MATLAB)

需将图形文件复制到D盘根目录，或修改程序中的相关文件的路径。 计算机运行可能会出现这样的警告：Warning: Function call WAVEDEC2 invokes inexact match F:Matlab oolboxwaveletwaveletwavedec2.m. > In Wnn0802 at 18 无妨，没关系的，不影响运算结果。(Need to copy files to the D graphics root directory, or modify the program in the path of the relevant documents. Computer running such a warning might appear: Warning: Function call WAVEDEC2 invokes inexact match F: Matlab toolbox wavelet wavelet wavedec2.m> In Wnn0802 at 18 anyway, it does not matter, does not affect the result of the operation.)

说明：  现代永磁同步电机控制原理及MATLAB仿真__袁雷编著pdf以及随书仿真模型(Control principle of modern permanent magnet synchronous motor and MATLAB simulation)

this file simulate Direct Sequence Spread Spectrum Transmitter/Receiver systems With Time-Synchronization

After identifying the best MNT− 1 nodes with the simplified branch metric and the accumulated branch metric at stage NT − 1, we then calculate the LLR of each coded bit utilizing the standard squared Euclidian distance metric. The log-likelihood ratio (LLR) of a posteriori probability (APP) of each coded bit conditioned on the received signal y is normally calculated using the max-log approximation.

说明：  有关拉格朗日和牛顿插值的算法描述及MATLAB编程实现(The Lagrange and Newton interpolation algorithm description and MATLAB programming)

基于matlab的经济学方面的一些程序，希望对大家能有些帮助！(based on the economics Matlab some of the procedures, we can hope for some help!)