改进版的bp神经网络算法编程（pso）

说明：  ECG心电信号预处理，高通滤波器，滤除呼吸基线漂移，带阻滤波器，滤除工频干扰，并两组滤波器的处理速度进行比较(ECG signal preprocessing, high-pass filter, filter respiratory baseline drift, band stop filter, filter frequency interference, and two filters to compare the processing speed)

Estimate a Fir modeling and choose among various types of window according to the transition range.

mean and covariance of samples estimation

ES A PRACRICA 2 DEL LABORATORIO DE DIGITAL

包括主成分分析、因子分析、贝叶斯分析，有详细的注释，BP神经网络用于函数拟合与模式识别。( Including principal component analysis, factor analysis, Bayesian analysis, There are detailed notes, BP neural network function fitting and pattern recognition.)

极大似然法，基于极大似然法的参数估计，matlab程序(Maximum Likelihood)

输入信号为方波信号+高斯白噪声，方波信号基 频为1kHz，幅值为1，高斯白噪声方差为0.2， 均值为0，采样频率为20kHz。试用最大熵估计 法估计此信号的AR模型及其功率谱，并分析结 果(The input signal is a square wave signal+ Gaussian white noise, square wave signal fundamental frequency 1kHz, amplitude is a Gaussian white noise variance is 0.2, the mean is 0, the sampling frequency is 20kHz. Try maximum entropy estimation method to estimate the AR model of this signal and its power spectrum, and analyze the results)

对铅酸蓄电池，超级电容，锂电池，三者连接到dc-dc变换器升降压，然后采取不同的控制策略，恒压，恒流，恒功率控制，最后通过逆变器将直流变交流。matlab 仿真(For lead-acid batteries, supercapacitors and lithium batteries, the three are connected to the dc-dc converter to increase and decrease the voltage. Then, different control strategies are adopted to control the constant voltage, constant current and constant power. Finally, the dc converter is changed into an alternating current through the inverter.The matlab simulation)

MATLAB 中的插值程序，含说明与范例，并比较四种插值方法的结果。(MATLAB in the interpolation process, including description and examples, and compare the results of four kinds of interpolation methods.)

能够计算进行有限元和扩展有限元的简单计算(FEA and XFEM matlab code can do a single crack in elastic analysis)