UntitledzsWC.tar

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)

粒子滤波源代码，适合各种非线性参数估计，和智能算法(Particle filter source code for various nonlinear parameter estimation, and intelligent algorithm)

说明：  matlab 控制系统计算机辅助设计-MATLAB语言及应用(matlab control system for computer-aided design and application of language-MATLAB)

理想，Buuterworth 高斯低通滤波(Ieal, butterworth gaussian low pass filter)

LMS算法的动态信源跟踪DOA，能够很好的跟踪动态信源(LMS Dynamic Tracking )

Useful tool for rendering and outputting information rich images(This function can be used in place of IMAGE, IMAGESC and IMSHOW, but does so much more. It is fast and displays images as they should be- correct aspect ratio, integer magnification, no axes. In addition, it can return the image as an output variable- useful for saving to disk, texture mapping surfaces, and post-rendering manipulation such as overlaying/combining two or more images. All the MATLAB built-in colormaps are implemented, but without MATLAB s nasty discretization artifacts. Plus, there are many new colormaps which are helpful for viewing more complex data, such as optic flow, likelihoods over images, difference images, segmentations, stereo image pairs (as anaglyphs) and edge-maps with orientation. It also accepts user defined linear and non-linear colormaps.)

均匀介质各向同性二维弹性波数值模拟，采用cerjan边界条件。有公式及参考文献。带有速度模型以及雷克子波函数，解压后直接运行就可以。(The homogeneous medium isotropic two-dimensional elastic wave numerical simulation, using cerjan boundary conditions. formulas and references Sample are added.With the velocity model and the the Ricker wave function, and can be run directly after decompression.)

实现多目标粒子群优化功能，重点是进化因子的选取！！(implementation of multi objective particle swarm optimization function, the key is to the evolutionary factor!!)

simulating simu link model for a electrical transient network without circuit breaker

我搜集的一些关于无刷直流电机建模的文章,一共4篇都是写得比较好的。(I have collected some of the brushless DC motor model on the article, a total of four are well-written.)