sanjiaobopinpu

steps - 1. run DigitRecognizer.m 2. mode to run a. Test Mode input pad will open with axes having a red dot. left-click mouse and drag(dont unclick) mouse to draw a numeric digit. if you unclick mouse it won t draw anything. if you want to continue drawing, click again on any red place on axes and start dragging. once done, click submit. it will give you result. b. Training Mode input pad will open with axes having a red dot. draw a number and click submit. when promted, enter the value you drawn. if you wish to continue training, click YES and repeat. if you click No, a feedforward neural network will be trained and saved, you can test it.

块LMS算法 相对于逐点计算的LMS算法，块LMS算法具有相对较高的计算效率，同时在一定程度上提高了算法的收敛稳定性(LMS algorithm block-by-point LMS algorithm for computing the block LMS algorithm has a relatively high computational efficiency, while a certain extent, to improve the stability of the algorithm convergence)

这是一个简单的多用户蜂窝无线通信系统的建模与仿真(This is a simple design of cellular radio systems for multi-user )

说明：  这是一个基于PQ控制的逆变并网模型，可以完美运行。(PQ control, perfect operation.)

ieee9.m 相信对以一定有用 用过matlab运行 对于ieee9 bus(ieee9.m file)

说明：  采用牛顿拉夫逊法计算电网的潮流，各节点电压，各支路电流。(Newton Raphson power flow calculation, and each node voltage current in each branch.)

x0 = ones(2,2) Make a starting guess at the solution options = optimset( Display , off ) Turn off Display [x,Fval,exitflag] = fsolve(@myfun,x0,options) The solution is x = -0.1291 0.8602 1.2903 1.1612 Fval = 1.0e-009 * -0.1619 0.0776 0.1161 -0.0469 exitflag = 1 and the residual is close to zero. sum(sum(Fval.*Fval)) ans = 4.7915e-020

产生噪声调频干扰信号，并画出它的时域和功率谱(Generate noise FM jamming signal, and draw it in time domain and power spectrum)

去除adc采样信号基线程序，需要输入采样率，基线时刻等(trime base line)

Multiple Source EM Wave propagation modeling via Finite Differences