滤波器组

基于导频的ofdm信道估计算法研究，包括基本的算法思想和解决步骤(Based on the pilot channel estimation algorithm for ofdm research, including the basic ideas and algorithms to solve these)

对空间卫星、飞机等图像进行特征提取，提取的特征包括面积，周长，紧密度，及离心率(Space satellites, aircraft and other image feature extraction, the extracted features include area, perimeter, compactness, and eccentricity)

书籍《滑模变结构控制MATLAB仿真》,刘金琨,书中含有很多滑模变结构控制MATLAB仿真例子(《MATLAB simulation of sliding mode control》, Liu Jinkun, the book contains a lot of sliding mode control MATLAB simulation example)

asynchronous machine modeling

[t, y]=EULER_forward_ODE(f, t0, y0, tend, Niter) 欧拉向前逼近法求解微分方程初值问题 f定义了函数f（t，y）的 t0时的初始值定义吨 Y0的定义y的初始值( [t, y]=EULER_forward_ODE(f, t0, y0, tend, Niter) Euler forward approximation method to solve IVP ODEs f defines the function f(t,y) t0 defines initial value of t y0 defines initial value of y)

永磁电机双闭环调速，转速外环，电流内环，最后转速平稳(Double-loop speed permanent magnet motor, speed outer, inner current loop, the last speed steady)

低通滤波器，对数据进行平滑，也叫做最小二乘法，Savitzky-Golay算法(a particular type of low-pass filter, well-adapted for data smoothing, and termed variously Savitzky-Golay, least-squares, or DISPO (Digital Smoothing Polynomial) filters. Rather than having their properties defined in the Fourier domain and then translated to the time domain, Savitzky-Golay filters derive directly from a particular formulation of the data smoothing problem in the time domain)

用Levinson算法，Burg算法，ARMA模型法，MUSIC算法来估算功率谱。并进行比较。(With Levinson algorithm, Burg algorithm, ARMA model method, MUSIC algorithm to estimate the power spectrum. And compared.)

卷积编码，使用成型函数，采用1/2码率，64状态。即，一入两出，64个状态则为6个移位寄存器。采用交织，按行输入，按列输出，采用QPSK调制，即符号两两一组，映射到-1+j,-1-j,1+j,1-j。信道采用Proakis-B信道。

此程序是关于小波变换用于故障信号分析和处理的程序，特别适合去噪和第一类间断点的检测，适合机械波研究者参考(this procedure is used on the wavelet transform fault signal analysis and processing procedures, particularly suitable for de-noising and continuity of the first category of detection, for the reference of researchers mechanical wave)