jlfx

说明：  算术编码算法的程序块，在matlab中的是实现(Block arithmetic coding algorithm, is achieved in the matlab)

用于信号与系统中音频的处理，以及一些例子(System for signal and audio processing, and some examples)

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) )

这是永磁同步直线电机的空间矢量控制模型，已经通过仿真请放心下载(This is the space vector control of permanent magnet synchronous linear motor model, the simulation has been downloaded, please be assured)

we can obtain the symbol error rate of space time block code using the modulation technique of Quadrature-Phase shift keying

exponential distribution

papr comparison on the basis of slm, co-pts with different iteration............

数字信号处理中功率谱的重要算法。代码中对比了经典谱估计直接法和间接法之间的关系(digital signal processing power spectrum in the algorithm. Code Comparison of classical spectrum estimated direct and indirect relations between the)

四旋翼飞行器入门材料，由浅入深，适合初学者(Four-rotor entry materials, Deep, suitable for beginners)

数值分析方法的应用研究 有限差分法求解电磁场微分方程(Study on numerical analysis method of finite difference method for electromagnetic differential equations)