ex1

PSCAD搭建的不控型整流充电机，适合初学者学习(PSCAD built not controlled rectifier charger, suitable for beginners to learn)

系统辨识作业 考虑如下模型 z(k)-1.5z(k-1)+0.7z(k-2)=u(k-1)+0.5u(k-2)+v(k) 其中v(k)是均值为0，方差为1的白噪声。根据模型生成数据，采用递推最小二乘法对模型参数进行辨识，要求绘出各参数随时间的变化曲线。 ("System identification" computer test 。Consider the following model Z (k) to 1.5 of z (k- 1)+ 0.7 z (k- 2) = u (k- 1)+ 0.5 u (k- 2)+ v (k) The v (k) is the mean to 0, the white noise variance 1. Generate data according to the model, the recursive least squares method is adopted to model parameters are identified, draw the parameters changing with time curve. )

使用PSCAD编写的IEEE 14节点案例，可以直接运行(IEEE14 node can use cases, using PSCAD preparation)

用matlab软件绘制发动机的万有特性曲线。(Matlab software rendering engine than the characteristic curve.)

利用mathcad计算齿轮啮合刚度系数，详实说明，自己编写(Calculated using the gear meshing stiffness coefficient mathcad, detailed instructions, write by myself)

caiyang 演示采样定理,时域采样,频谱周期延拓 不错的源码(Caiyang demo sampling theorem, the time domain sampling, spectrum cycle continuation good source)

MATLAB下绘制三维极坐标图，输入极径和角度范围，还可以选择画图的种类，也可以画等高线图(Draw three-dimensional polar plot using MATLAB.)

集中介绍了HDC,CDC,CClientDC,CPaintDC,CWindowDC的使用方法和区别，绘图显示效果，区分窗口客户区。(Focus on the HDC, CDC, CClientDC, CPaintDC, CWindowDC to use and distinction, graphics effects, to distinguish the window client area.)

b样条曲线程序和gui界面，输入参数画出曲线(B-spline curve program and GUI interface, input parameters to draw the curve)

绘画出三阶的贝塞尔曲线, 求出曲线上各点的曲率和半径,可用于弯道设计(Drawing out the order of the Bezier curve, find the points on the curve and radius of curvature, can be used for curve design)