PMSM-SMC

说明：  用matlab语言写的EM(Expectation maximization)算法,用于模式分类(Matlab language used to write the EM (Expectation maximization) algorithm for pattern classification)

运用MATLAB求解偏微分方程的数值解的程序(Numerical Solution of Partial Differential Equations MATLAB program)

PLSA，概率潜在语义算法,用于寻找变量之间的隐隐含变量，常用于图像标注、图像检索、计算机文本检索(PLSA, probabilistic latent semantic algorithm for finding faint containing variables between variables, commonly used in image annotation, image retri , computer text retri )

基于MATLAB利用Particle-in-cell模型,对梯形管内壁等离子体离子注入过程,进行了二维数值模拟.计算结果表明在中心电极附近出现了“阳极鞘层”,该鞘层内部不存在离子,而且在鞘层边缘离子密度最高.在上下管壁上的离子注入剂量呈现“m”形分布.通过对注入过程中等离子体密度分布和不同时间段管壁不同位置离子注入剂量的跟踪,发现“阳极鞘层”扩展行为是导致“m”形分布的原因.由于梯形管形状的不对称性,“阳极鞘层”的边缘向梯形长底方向扩展较快.在注入初始时刻离子注入的能量很低,随着时间延长离子能量逐渐升高,这是由离子初始位置决定的.可见梯形管自身形状决定了鞘层形状和最终的离子注入能量和剂量分布.(Based on MATLAB use Particle-in-cell model, the trapezoidal pipe wall plasma ion implantation process, the numerical simulation of two-dimensional calculation results show that in the vicinity of the center electrode to a "anode sheath," which does not exist inside the plasma sheath, and the highest in the sheath edge ion density ion implantation dose showing the upper and lower walls of the "m"-shaped distribution through the process of injecting the plasma density distribution and the wall at different locations in different time periods ion implantation dose tracking, found that "anode sheath "extension behavior is leading to" m "-shaped distribution of the reasons due to the asymmetry of the trapezoidal shape of the tube," Edge anode sheath "extension to the end of a long trapezoid direction quickly in the initial moment of implantation energy ion implantation is low ion energy with time gradually increased, which is determined by the initial position of the ion. visible trapezoida)

navigation.rar包含5个有用的导航程序； navigation.m为纯惯导解算程序； integrated_navigation为组合导航程序； KalmanAlign10.m为卡尔曼滤波对准程序； create_data.m为原始数据创建程序； ssm.m为结果显示程序(navigation.rar contains five useful navigation program navigation.m pure INS solver KalmanAlign10.m for the Kalman filter alignment procedures create_data.m create a program for the original data integrated_navigation for integrated navigation procedures ssm. m is the result display program)

IIR滤波器模拟巴特沃斯滤波器，并可观察期幅频和相频曲线(IIR filter simulation Butterworth filter, and can be observed on the amplitude frequency and phase-frequency curve)

对波动光学中的衍射进行三大衍射实验的计算机仿真(The diffraction of wave optics for three big diffraction experiment of computer simulation )

基于OFDM系统的卷积码的误码性能分析，BPSK调制，加循环前缀，导频，进行了信道估计。(OFDM system；convolutional code BPSK modulation pilot Channel Estimation )

说明：  PFC电压模型,供大家参考使用,共同学习.(PFC voltage model for reference use, learning together.)

使用matlab实现香农编码，并求出编码效率(Using matlab to achieve the Shannon encoding, and find the coding efficiency)