Raman

汽轮机转子系统前三阶临界转速的传递矩阵法(Turbine rotor system critical speed before the third-order transfer matrix method)

数字信号处理基于matlab实现的很好的电子书，里面含有大量的实例和讲解，不容错(Matlab-based digital signal processing to achieve a good e-book, which contains a large number of examples and explanations, is not fault-tolerant)

说明：  数值计算长周期光纤光栅(Numerical Calculation of long-period fiber grating)

说明：  用于非平稳、线性信号的信号分离，可用于公董轴承故障研究。经测试降噪能力优越(It can be used for the signal separation of non-stationary and linear signals, and can be used for the fault research of common bearing. Superior noise reduction capability after test)

信号与系统在MATLAB中的实现，给出了各种信号处理基本方法的源码实现(Signals and Systems at the MATLAB implementation, give a variety of basic methods of signal processing implementation of the source)

％ EM algorithm for k multidimensional Gaussian mixture estimation ％ ％ Inputs: ％ X(n,d) - input data, n=number of observations, d=dimension of variable ％ k - maximum number of Gaussian components allowed ％ ltol - percentage of the log likelihood difference between 2 iterations ([] for none) ％ maxiter - maximum number of iteration allowed ([] for none) ％ pflag - 1 for plotting GM for 1D or 2D cases only, 0 otherwise ([] for none) ％ Init - structure of initial W, M, V: Init.W, Init.M, Init.V ([] for none) ％ ％ Ouputs: ％ W(1,k) - estimated weights of GM ％ M(d,k) - estimated mean vectors of GM ％ V(d,d,k) - estimated covariance matrices of GM ％ L - log likelihood of estimates ％( EM algorithm for k multidimensional Gaussian mixture estimation Inputs: X (n, d)- input data, n = number of observations, d = dimension of variable k- maximum number of Gaussian components allowed ltol- percentage of the log likelihood difference between 2 iterations ([] for none) maxiter- maximum number of iteration allowed ([] for none) pflag- 1 for plotting GM for 1D or 2D cases only, 0 otherwise ([] for none) Init- structure of initial W, M, V: Init.W, Init.M, Init.V ([] for none) Ouputs: W (1, k)- estimated weights of GM M (d, k)- estimated mean vectors of GM V (d, d, k)- estimated covariance matrices of GM L- log likelihood of estimates)

svd水印算法,运用svd分解来嵌入水印，抗噪性和鲁棒性都很好(svd watermarking algorithm)

基于MATLAB技术的PWM发生器仿真模型。(PWM generator simulation model based on MATLAB technology.)

matlab simulaink simulation of doubly feed iduction generetor

this program simulates 2D electromagnetic Maxwell equations , by using finite difference time domain method FDTD..and it simulates the perfect matched layer to prevent the reflections that may occure at the boundaries of the problem space