pscad

基于PSCAD 4.5搭建的IEEE 第一标准测试模型，可以用于次同步振荡的研究。(The first IEEE standard test models built based on PSCAD 4.5 can be used to study sub-synchronous oscillations.)

中心点垂直磁场，使用matlab已有的erf误差函数，图形已绘制，绘制偏b比偏t的曲线(The center point of the vertical magnetic field using matlab existing erf error function, the graphics have been drawn, draw partial b than partial t curve)

用四阶龙格-库塔法求系统在U单位阶跃输入下该系统的响应曲线(Using the four order Runge Kutta method to find the response curve )

恒定声速梯度下的声线模型Matlab作图源程序(onstant velocity gradient model of voice)

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)

说明：  三次样条插值 MATLAB编程 可直接会出图像并输出样条函数(Cubic spline interpolation can be directly MATLAB programming will be the image and the output spline function)

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)

可以批量绘制全潮海流观测的流速流向曲线图,以大潮为例.只需将观测数据写为xlsx格式,即可自动出图.可以支持多个xlsx文件批量绘制.(You can draw all tidal currents observed mass flow rate of the flow graph to tide Case observational data simply written as xlsx format, you can automatically plot can support multiple xlsx file batch rendering.)

基于最小均方误差准则的小波包树结构的选择 仿真程序(Based on minimum mean square error criterion selection of wavelet packet tree structure simulation program)

计算机图形学中用“中点画线法”和“Bresenham算法”实现画直线和圆弧的扫描转换算法（matlab实现）(Computer graphics using in the line stipple and Bresenham algorithm realize painting a straight line and arc scan conversion algorithm (matlab realize))