electrical-machinery-simulation

duffing方程用于微弱信号检测的matlab程序。包含两种方法，一种是inline，一种是@fan。(duffing equation for weak signal detection matlab program. Contains two methods, one is inline, one is @ fan.)

本程序设计了常用的几个坐标系的转换，从WGS—84与PZ－90坐标系的相互转换，以及空间直角坐标系与大地坐标系的转换。(This procedure has designed a number of commonly used coordinate system conversion from WGS-84 and PZ-90 coordinate system conversion, as well as the spatial Cartesian coordinate system and geodetic coordinate system conversion.)

this file contains some m-files about calculating the fractional fourier transform

运用古典隐式方法模拟二维空间中声波的传播，求解工程用了追赶法(The dissemination of the classical implicit simulation method of acoustic wave in two-dimensional space, solving project was chasing method)

一个对数据处理的Matlab函数，统计数据的概率分布并画出概率密度曲线，已经验证，将该函数安装在函数工具箱内即可调用。(A data processing of Matlab function, the probability distribution of the statistical data and draw the probability density curve, have tested, the function will be installed in the tool can function call. )

There is some matlab program for image processing..

Matlab工具包，包含了支持向量机和核函数的工具包，可直接调用(Matlab toolkit, including support vector machine SVM and kernel function tool kit, can be called directly )

光纤LP51模式,光纤模式计算，纤芯模式，有效折射率(Fiber LP51 mode, fiber mode calculation, fiber core mode, effective refractive index)

FSK调制方式的SIMULINK仿真和完整的参数设置(FSK modulation of the SIMULINK simulation and a complete set of parameters)

The ouput is the TE/TM band structure (first five bands) along pricipal directions (G-X-M-G) of a square-lattice photonic crystal with unit cell consisting of a substrate of "epb" relative permittivity with circular rods(holes) of "epa" relative permittivity and radius "r". Usage is SharifPWE_BZplot(N,RES,r,epa,epb) N: N in PWE algorithm (number at which the summations are truncated) RES: number of the divisions on every side of BZ#1 r: normalized radius of the circle of holes/rods (0<r<0.5) epa: relative permittivity of holes/rods epb: relative permittivity of the substrate Written by Amir Hosseini for the Course Photonic Crystals (C) Copyright 2005 School of Electrical Engineering Sharif University of Technology All Rights Reserved