matlabPID

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)

matlab2007 b 汉化包源码要求为希望对英文很菜的新手有所帮助-(matlab2007 b finished package)

基于HHT方法的模拟调频信号的hilbert谱分析(HHT-based method of analog FM signal hilbert spectral analysis)

说明：  基于短时能量 短时过零率 自相关函数的语音清浊分类算法(Zero based on short-term rate of short-term energy autocorrelation function of speech voicing classification algorithm)

画方波和方波的频谱的matlab程序！画方波和方波的频谱的matlab程序(Picture of the frequency spectrum of square wave and square wave of matlab)

高效调制信号ebpsk和cp-ebpsk，以及功率谱特征。(ebpsk and cp-ebpsk)

说明：  自己翻译的一篇最新外文文献《使用无需重建最佳探测器的宽带压缩传感认知无线电》(Own translation of a the latest foreign literature use without having to rebuild the best detectors broadband compressed sensing cognitive radio &quot )

基于L阵的二维信号稀疏分解的DOA估计 应用稀疏分解方法进行二维DOA估计(Estimation sparse decomposition method based on two-dimensional signal-dimensional DOA estimation of sparse matrix decomposition L DOA)

SIMULINK简明教程，希望对初学者有用(simulink tutorial, I hope useful for beginners)

3GPP 系统的MIMO信道模型仿真,里面有例子,在matlab里面仿真example .mimo.m(simulation of MIMO radio channel of 3GPP)