ac2dc

说明：  畫一多角形 三角形 四角形 五角形 和移動等功能(Draw a polygon triangle square pentagon and mobile features)

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. )

梦想CAD控件的使用实例源代码C# 主要对其基本功能进行实例介绍(Dream CAD controls the use of C# source code examples dream CAD controls the source code examples for C#)

本人主要学习研究synopsis公司的Sentaurus TCAD半导体工艺软件的使用,此程序主要是实现对光电二极管的I-V特性曲线的仿真脚本（可以测试反相击穿电压以及正向阈值电压）(I mainly study the synopsis of Sentaurus TCAD semiconductor process software, the use of this program is mainly for the photodiode I- V characteristic curve of the simulation script (can test the reverse breakdown voltage, and positive threshold voltage))

传染病模型，用于数学建模数据分析及绘图，包括SI模型、SIR模型、SIS模型图形绘制。(Epidemic model for mathematical modeling data analysis and graphics, including the SI model, SIR model, SIS model graphics rendering.)

支持向量机的画图程序。能够很好的将识别到的不同类型分量，可视化。(Support vector machine (SVM) drawing program. Can very good will to identify the different types of component, visualization. )

结合VS2010和TeeChart v5控件读取txt文件数据并画曲线图。可以画2条以上的曲线图，也可以修改曲线图的颜色。(Combine VS2010 with TeeChart v5 to read TXT data and draw graph.It can draw more than 2 curves and also can modify the color of the curves.)

信号频谱分析 1. 观测已知方波信号、正弦波信号的频谱 分析频率为4KHz、8KHz的占空比为50 的方波信号、正弦波信号的频谱。记录所得频谱图。 观测实时模拟信号（语音）的频谱 用音频设备采集一段语音，将语音存为.wav格式。对wav文件作分段傅里叶变换分析。语音是分音节的，应把它分段分析，而且实际运用中的数字信号处理的FFT的点数是有限的，一般只能达到千点。用傅里叶反变换IFFT，从频域恢复信号。画出频谱图和语音波形图(Signal spectrum analysis 1. Observing a known square-wave signal, sine wave signal frequency spectrum analysis 4KHz, 8KHz for the 50 duty cycle square wave signal, sine wave signal frequency spectrum. The recorded frequency spectrum. Observing real-time analog signal (voice) of the spectrum collected with the audio devices section of voice, voice saved as. Wav format. Wav file of the sub-Fourier transform analysis to make. Speech is divided into syllables, it should be sub-analysis, and practical application of digital signal processing of the FFT points is limited, generally only reach 1000 points. Fourier inverse transform IFFT, to restore the signal from the frequency domain. Draw maps and voice waveform spectrum)

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.)

对角度跟踪并给出详细的跟踪结果，比较不同情况下的运行效率，绘制跟踪误差曲线，直接给出曲线图，可以直接运行.(For pure Angle tracking and give detailed tracking results, draw tracking error curve, compare different situations efficiency, direct given curve, can be directly run)