4-chapter

Newton Raphson load flow y bus formation

绘制庞加莱截面图 在相空间中适当（要有利于观察系统的运动特征和变化，如截面不能与轨线相切，更不能包含轨线）选取一截面，在此截面上某一对共轭变量如x1和x.1取固定值，称此截面为Poincare截面，相空间的连续轨迹与Poincare截面的交点成为截点。(Poincare mapping sections in the phase space properly (should be beneficial to observe the system and changes in movement characteristics, such as the cross-section can not be tangent trajectory, but also can not contain rail line) to select a cross-section, in this section for a total of conjugate variables, such as x1 and X.1 take a fixed value, call this cross-section for the Poincare section, the phase space of the continuous trajectory of the point of intersection with the Poincare cross-section to become cut-off point.)

这是一个用Matlab-S函数写的DFIG在alpha-beta发电运行程序(This is the DFIG in the alpha-a beta generation to run the program, write a Matlab-S function)

This is a text book in Digital communication which is very good in understaing

matlab经典的100个实验程序。非常适合初学者学习。(matlab classic 100 experimental procedure. Very suitable for beginners to learn.)

matlab程序： 计算机模拟思想计算概率模型(matlab program )

Fourier transform optics

非线性曲线拟合是已知输入向量xdata和输出向量ydata，并且知道输入与输出的函数关系为ydata=F(x, xdata)，但不知道系数向量x。今进行曲线拟合，求x使得输出的如下最小二乘表达式成立： min Σ(F(x,xdatai)-ydatai)^2(Nonlinear curve fitting is a known input and output vectors xdata vector ydata, and know the relationship between the input and output functions for ydata = F (x, xdata), but do not know the coefficient vector x. As least-squares curve fitting expression today, find x such that the output of the establishment: min Σ (F (x, xdatai)-ydatai) ^ 2)

粒子群优化算法有着广泛的作用，可在MATLAB上运行(Particle swarm optimization algorithm has a broad role, can run on MATLAB)

code producing figure 1.12 of the book "informatioin theory,inference,and learning algorithm"