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数字PID的matlab仿真程序，针对刘金琨的先进PID控制的matlab仿真，里面的部分程序进行了修改 第七章(Digital PID of matlab simulation program for Liu Jinkun matlab advanced PID control simulation, which were modified some procedures of Chapter VII)

plotsmithchart Usage:where Zl is the Load Impedence (possibly complex)and Zo is the Characteristic Line Impedence Plots a smith chart, along with the reflection coefficient circle and the line of intersection with resistive component equal to 1

MATLAB仿真OFDM过采样的东西，主要的星座图和每一个子载波上对应的星座图也被观察到。(MATLAB simulation OFDM sample things, the main constellation chart and each is the carrier of the corresponding constellation chart has been observed.)

matalab similink 单相锁相环 仿真建模(matalab similink singal PLL simulation)

ofdm的仿真程序，可以直接运行，希望对大家有所帮助！(ofdm simulation program can be run directly, we want to help!)

PID比例控制，用对水箱的液位的控制，通过调节阀的流量改变，来控制液位稳定(pid)

说明：  基于sift的交通标志识别并创建GUI实现其功能(Traffic sign recognition based on SIFT and GUI implementation)

代码为本人学习matlab的GUI程序设计期间，所做的uicontrol的所有例子，适合初学uicontrol的同学们。期望与大家共同进步，一起研究问题。(I am learning matlab code for the GUI program design, the uicontrol done all the examples, suitable for beginner students uicontrol. U.S. look forward to working with the common progress, together with research questions.)

将接地长导线源沿导线方向分解成多个电偶极子源，对若干电偶极子源产生的响应进行叠加得到接地长导线源的Hz响应。计算结果表明接地长导线源的Hz响应与电阻率之间的关系也为单值关系。(Decompose the grounded long wire source along the wire direction with several electric dipole, and overlay the response which produced by the electric dipole as the grounded long wire source’s response. The result show that the relationship between the Hz component of ground long wire source and resistivity are also single valued.)

Overview on OFDM, describes the OFDM system and parameters and basic concepts on OFDM techniques.