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DistMesh giving a singular FEM matrix?(Hi Anyone here with some experience of using DistMesh in finite element code? I m solving the scalar Helmoltz equation in an annular region in 2D: rho_1 < rho < rho_2 where rho_1 is the radius of a Perfect Electric Conducting cylinder and rho_2 is where the mesh is truncated using an Absorbing Boundary condition. Now, I ve written code to mesh the region myself (by dividing the region into annular rings and picking a fixed number of points on each ring) and I ve written another program which uses DistMesh to mesh the region. I get a nice solution using my own meshing code but the FEM matrix becomes singular when I use DistMesh. This is the DistMesh Code I used: Circle with hole rABC=1.5 rCyl=0.5 fdstring=sprintf( ddiff(dcircle(p,0,0, f),dcircle(p,0,0, f)) ,rABC,rCyl) fd=inline(fdstring, p ) box=[-2,-2 2,2] [p,N]=distmesh2d(fd,@huniform,0.04,box,[]) I tried changing box and the 0.04 value (initial edge length). But every time, the matrix becomes sin)

Here we have modelled a five-phase induction motor and we have applied DTC control technique to the machine

简单说明用matlab实现OFDM调制与解调(Matlab to achieve a simple description of the OFDM modulation and demodulation)

粒子滤波器PF matlab代码，各行代码都有详细说明

这是用MATLAB语言学习的经典教程。适合于初学者大家一起分享一下！(This is a classic MATLAB language learning tutorial. Suitable for beginners to share with everyone!)

Euler折线法求解微分方程 (Euler line method to solve differential equations)

this is a example about matlab and VC

说明：  该工程用来对于声音和图像的基本采集，工程中有各种采集的方法以及对于声卡的设置也作出了解释。附有matlab的GUI界面。(The project is used for basic voice and image acquisition, the project collected a variety of methods and settings for the sound card also made explanation. The GUI interface with matlab.)

用平面波展开法计算二维声子晶体带隙,包括脚本文件和函数文件形式，有较好的参考价值。( Computation Method D phononic bandgap plane wave, Including script files and function files in the form, There are good reference value.)

EM algorithm for finding optimal value that represents parameters in the algorithm