FDTD__2Dimension

Wireless multipath enviroment for Narrowband channel using Clarke s model

matlab 6.0的指令大全，后来很多版本的与6.0的兼容，大家可以参考。(matlab 6.0 all instructions!!)

this is very good book, so i want to upload this here

说明：  首先介绍计算机仿真技术和仿真建模方法的基本概念，以便对建模和仿真有个初步和整体的认识；然后对 Simulink 进行简单介绍，并以一个简单例子进行引导；最后介绍 Simulink的工作原理，为后续的深入掌握 Simulink 打下基础。(First introduces the computer simulation technology and the basic concepts of simulation modeling methods, modeling and simulation in order to have a preliminary and general understanding and then a brief introduction to the Simulink and be guided by a simple example Finally, the working principle of Simulink, Simulink for subsequent understanding of the basis.)

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this is useful for protective device coordination useful for power system protection.

DCDC变换器模型,采用双闭环控制，电压PI外环控制输出电压，电流PI内环加快相应速度(Model of a DC-DC converter，the completion of the current loop, double closed loop control scheme of voltage outer loop.)

partial differential equation 4 matlab

用matlab实现的最小二乘拟合圆，能输出半斤，圆心坐标，拟合误差等等(a program for cirfit)

说明：  利用EM算法对状态空间模型中的参数进行辨识，效果良好(The EM algorithm is used to identify the parameters in the state space model, and the result is good.)