平均路径长度&聚类系数计算

光纤存在非线性效应，SPM、XPM、FWM，本算法为啁啾高斯光束在光线中传播的波形变化，采用了分步傅里叶法(simulation of fiber nonlinearity)

说明：  用C语言将相变温度-压力曲线写入udf，用于fluent中自定义函数功能，添加于物性参数。(Phase Transition Temperature-Pressure Curve)

直流配网模型，非常基础的直流配网模型，便于对直流配网的基本掌握和学习(DC distribution network model, very basic DC distribution network model, easy to grasp and learn the basic DC distribution network)

半主动悬架的整车模型，基于LQG算法进行悬架振动控制(Vehicle model of semi-active suspension)

通过carsim与matlab联合仿真，基于模型预测控制算法的无人车辆轨迹跟踪（内含五个matlab编程代码）(Through simulation of CarSim and MATLAB, achieving trajectory tracking control of intelligent automotive based on MPC (containing five matlab programming code))

腹板式渐开线直齿圆柱齿轮建模,利用ANSYS软件模拟，能很容易得到应力分布(Modeling of web type involute spur gear)

说明：  该模型是对50kW、380V、50Hz三相三电平逆变器的两个相同电路进行建模。IGBT逆变器采用SPWM技术，(8kHz载频)将直流电源从a +/-200Vdc源转换为220V AC, 50Hz。逆变器通过75kVA 220/380V变压器输入50kW电阻负载。变频器输出采用L-C滤波器滤除主要产生于8kHz开关频率倍数(Fh=n*8000 +/-k*50Hz)附近的谐波频率Fh。逆变器所需的12个逆变脉冲由PWM发生器块产生。该系统以恒定的调制指标在开环中工作。 电路1使用三电平桥块对逆变器进行建模。电路2使用独立的IGBTs和二极管块。用开/关延时块模拟死区，仅在电路1上应用。(It is easy for us)

说明：  蚁群算法用来函数寻优，本代码给出了通用版本，能够很好的适应和学习(Ant colony algorithm is used to function optimization, this code gives a general version, can adapt and learn well)

三相永磁同步电机的滞环电流控制仿真模型，控制瞬态电流输出。(Simulation Model of hysteresis current Control for Three-phase permanent Magnet synchronous Motor)

发源于美国麻省理工学院的Vensim软件，是由Ventana公司开发，在全球和国内获得最广泛使用系统动力学建模软件。它具有图形化的建模方法，除具有一般的模型模拟功能外，还具有复合模拟、数组变量、真实性检验、灵敏性测试、模型最优化等强大功能。Vensim有Vensim PLE, PLE Plus, Professional和DSS版本，适合不同的用户。(Vensim software, originated from Massachusetts Institute of Technology, was developed by Ventana company, and has gained the most extensive use of system dynamics modeling software both globally and domestically. It has graphical modeling methods. Besides the general model simulation function, it also has many powerful functions such as compound simulation, array variables, authenticity test, sensitivity test, model optimization, and so on. Vensim has Vensim, PLE, PLE, Plus, Professional, and DSS versions for different users.)