MATLABFIR

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)

这是一个飞控系统中关于横侧增稳系统的sinmulink仿真框图(This is a flight control system on the horizontal side of sinmulink augmentation system simulation block diagram)

生成机器人三连杆模型，并自动生成各个输出函数，避免复杂的计算。(Generate model for three-link biped walker and output to an MATLAB funtion file dynamics. )

SIMPLE MORPHOLOGY OPERATIONS

The above matlab code include the simulation of dipole antenna and current distribution using standard algorithm

matlab实现FIR和IIR滤波器的设计，并作图显示(matlab FIR and IIR filter design and mapping display)

烟花算法程序，包括爆炸算子，高斯火花，映射规则，寻优策略(Fireworks algorithm program, including the explosion operator, Gaussian sparks, mapping rules, optimization strategy)

波前曲扭和幅度变化对阵列测向中相干源分辨的影响(Twisted and curved wavefront amplitude variation to distinguish the impact of coherent source direction finding in an array)

School management system

现代通信系统（实用MATLAB)第四章程序(Modern communication systems (useful MATLAB) Chapter IV procedures)