randsym

说明：  利用MATLAB语言编写的直流电动机开环启动和闭环启动特性分析(The use of MATLAB language open-loop DC motor start-up and characteristics of the closed-loop start)

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) )

判別分析法（discriminant analysis），是在已知的分類之下，一旦遇到有新的樣本時，可以利用此法選定一判別標準，以判定如何該將新樣本放置於那個族群中。 (Discriminant analysis (discriminant analysis), under the classification of the known event of the new sample, the method has been applied to select a criterion to determine how the new sample is placed in that population.)

bayes shrink denoising

已知系统的差分方程，用matlab实现输出信号的自相关计算并画出图形。(Differential equations known system, the output signal using matlab autocorrelation calculated and drawn graphics.)

说明：  扩展卡尔曼滤波算法（EKF）在目标跟踪中的应用。(The application of extended Kalman filter (EKF) in target tracking.)

一本介绍电磁场数值分析的书，分别介绍了有限差分，有限元，矩量法和最优化方法(1 Introduction Numerical Analysis of Electromagnetic Field book, introduced the finite difference, finite element, method of moments and optimization methods)

卡尔曼滤波器范例，在matlab当中可以实现卡尔曼滤波的功能，通过修改参数可得不同的结果(Example of the Kalman filter, Kalman filter function in matlab which can get different results by modifying the parameters)

this is the simulation model of the two generator system with midpoint voltage compensation in the open loop using the fc-tcr with the firing of the scr in the open loop. the midpoint voltage iss compensated and bring down to the nearly 1 p.u. it is helpful to understand svc and also can be helpful to design in the closed loop control system for the compensataion... Arvind

salam how are you wha about you when you are applay to me to use the code