truss-structure

基于Matlab的BP神经网络建模及仿真。将Matlab中的神经网络工具箱和Simulink有机结合起来，并充分利用它们各自的优势，实现了神经网络控制系统的计算机仿真。(Matlab based on the BP neural network modeling and simulation. The Matlab Neural Network Toolbox and Simulink combine and make full use of their respective advantages, the realization of a neural network control system of the computer simulation.)

说明：  基于matlab的MMA算法仿真程序，给出仿真前后效果仿真图(Based on the MMA algorithm matlab simulation program, the simulation before and after the effect of simulation map)

生成一个一定参数的原信号，并附加一个符合均匀分布的随机噪声，分别画出该信号经过均匀采样的频谱图以及经过非均匀采样的频谱和时域图(Generate a certain parameter of the original signal, and attach a line with uniformly distributed random noise were drawn through uniform sampling of the signal spectrum as well as through non-uniform sampling of the spectrum and time domain)

MATLAB提供了各种曲线拟合方法，例如：Exponential, Fourier, Gaussing, Interpolant, Polynomial, Power, Rational, Smoothing Spline, Sum of Functions, Weibull等，当然，也可以使用 Custom Equations. cftool不仅可以绘制拟合后的曲线、给出拟合参数，还能给出拟合好坏的评价参数(Goodness of fit)如SSE, R-square, RMSE等数据，非常好用。但是如果我们已经确定了拟合的方法，只需要对数据进行计算，那么这种GUI的操作方式就不太适合了，比如在m文件中就不方便直接调用cftool。 (matlab has given a lot of method for curve combine ,we will give a new method and provide a matlab code.)

BP神经网络算法，最常用的BP网络解法，下载后既可以运行使用。(BP neural network algorithm, the most commonly used BP Neural Networks Approach to download either run using.)

永磁同步电机弱磁调速系统的仿真.在矢量控制的基础上进行改进，采用弱磁调速，可作为参考.(Permanent magnet synchronous motor speed control system simulation weakening in vector control on the basis of improved, using weak magnetic speed, can be used as reference.)

EMD（经验模态分解）程序，用于将非平稳信号分解为一系列不同频率的分量，以方便对信号进行分析。(EMD (empirical mode decomposition) program for the non-stationary signal is decomposed into a series of different frequency components, in order to facilitate the analysis of the signal.)

一维小波包在matlab分解六层分解，与重构，可得高低频。与原高低频对比。( One dimensional wavelet packet decomposition in the MATLAB decomposition of the six layer, and the reconstruction can be HISTEP low frequency. Contrast with the original high and low frequency. )

This letter addresses the problem of fetal electrocardiogram (FECG) extraction. A class of source extraction algorithms is proposed, which uses a combination of two di® erent approaches: Barros s source extraction approach and HyvÄ arinen s ˉxed- point approach.

高斯法和拉普拉斯法生成随机数的经典matlab程序(Gauss law and the Laplace method classic matlab program to generate random numbers)