23825765wangluoloudonglunwen

matlab code for air...air medium

吴受章老师的《最优控制理论与应用》一书的MATLAB程序集与图集，很实用(By the teacher, Miss Zhang, " Optimal Control Theory and Applications," a book set and atlas of the MATLAB program is very useful)

matlab程序设计与应用，此书很通俗易懂，由浅入深，学习matlab的好资料(matlab program design and application, this book is very easy to understand, Deep and good information to learn matlab)

说明：  GMSK调制程序，采用I/Q调制，生成基带GMSK信号，供大家学习和参考！(GMSK modulation procedures, the use of I/Q modulation, to generate baseband GMSK signal for them to learn from and reference!)

实现fisher判别方法，对标准变量建立判别函数，然后判别位置的变量的类别(Achieve fisher discriminant analysis, discriminant function to establish the standard variables, and then determine the type of the variable position)

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：  时域同步平均算法，可以同来进行信号降噪，梳形降噪效果很好(The time-domain synchronous average algorithm can reduce the signal noise at the same time, and the comb shaped noise reduction effect is very good)

支撑向量机的最新Matlab算法，有实例演示。(Support Vector Machine latest Matlab algorithm, has examples of presentation.)

Calculates the Radon transform of a figure and returns the intersections of rays with the grid of the discretization in their projections

基本最小二乘估计递推算法matlab实现及绘图，以及生成M序列(Basic recursive least squares estimation algorithm and M series)