结构动力学算例 morison

根据牛顿插值原理进行数据的拟合，附有牛顿插值原理和它的matlab的实现方法，有点简单了，但是过程中的好些地方还是值得学习的。(Newton interpolation carried out in accordance with the principle of data fitting, with Newton interpolation matlab principle and its realization method, a bit simple, but in the process of a number of places it is still worth learning.)

【matlab编程代做】4B5B编码器线 可以作为参考使用([Do] matlab programming generation 4B5B encoder line can be used as references)

对含窄带噪声的语音信号进行小波去噪，并汇出LP谱和MVDR谱(LP and MVDR based wavelet)

说明：  MUSIC算法；是平面阵的。很好用。大家交流学习(MUSIC algorithm is planar array. Good use. To facilitate the exchange of learning)

采样频率 fs=10000 轴承外环故障信号 fid=fopen( bearingout.dat , r ) 故障 N=1024 xdata=fread(fid,N, int16 ) fclose(fid) xdata=(xdata-mean(xdata))/std(xdata,1) 时域波形 figure(1) plot(1:N,xdata) xlabel( 时间 t/n ) ylabel( 电压 V/v ) db10小波进行4层分解 一维小波分解 [c,l] = wavedec(xdata,4, db10 ) 重构第1～4层细节信号 d4 = wrcoef( d ,c,l, db10 ,4) d3 = wrcoef( d ,c,l, db10 ,3) d2 = wrcoef( d ,c,l, db10 ,2) d1 = wrcoef( d ,c,l, db10 ,1) ( Sampling frequency fs = 10000 bearing outer ring fault signal fid = fopen (' bearingout.dat' , ' r' ) failure N = 1024 xdata = fread (fid, N, ' int16' ) fclose (fid ) xdata = (xdata-mean (xdata))/std (xdata, 1) time-domain waveform figure (1) plot (1: N, xdata) xlabel (' Time t/n' ) ylabel ( ' voltage V/v' ) db10 wavelet decomposition 4 layer one-dimensional wavelet decomposition [c, l] = wavedec (xdata, 4, ' db10' ) 1 ~ 4 reconstructed detail signal d4 = wrcoef (' d' , c, l, ' db10' , 4) d3 = wrcoef (' d' , c, l, ' db10' , 3) d2 = wrcoef (' d' , c, l, ' db10' , 2) d1 = wrcoef (' d' , c, l, ' db10' , 1) )

说明：  计算时间序列的李雅普诺夫指数的著名wolf算法，比较经典与精简，适合物理专业配合所求解得非线性方程使用(Calculation of time series of well-known Lyapunov exponent wolf algorithm, compared with the streamlining of the classic, suitable for solving physics with the use of a non-linear equation)

matlab pid matlab pid matlab pid (matlab pidmatlab pid matlab pid)

认知无线网络学习代码,主要从性干噪比和功率的优化功率控制(Cognitive learning code wireless network)

this is a hata model

无多普勒频移的海底混响单元散射模型（matlab）( the seafloor reverberation unit scattering model without Doppler frequency shift)