ASFA

逆变器用svpwm空间矢量脉宽调制程序详解，matlab仿真使用。(Inverters svpwm space vector pulse width modulation Detailed procedures, matlab simulation use.)

简单的阵列仿真，适用于初学者。大家可以参考一下。(Simple array simulation for beginner. We can refer to.)

实验： 有两个个矩阵a和b，均为2行3列。 重载运算符“+”， （1）使之能用于矩阵的相加。如c=a+b。 （2）如果参与运算的两个操作数中一个是整数即矩阵+3或3+矩阵形式，进行加法运算也能得出和。 （3）定义自减运算符的前置（i++）和后置（++i）重载编写相应程序并验证它的正确性。 (i think it s a goog for many people)

solving torsion proble by FEM

三维点云法向量估计综述由于获取方便、表示简单、灵活等优势，点云逐渐成为常用的三维模型表示方法之一。法向量作为点云必不可少的属性 之一，其估计方法在点云处理中具有重要的位置。另一方面，由于点云获取过程中不可避免的噪声、误差和遮挡，点云中通常含 有噪声、外点和空洞，并且部分采样模型如CAD模型，也会存在尖锐特征，这些都给法向量估计提出了挑战。对当前已有的点云 法向量估计算法进行综述，分析其原理及关键技术，着重分析它们在处理噪声、外点和尖锐特征等方面的能力并给出比较，最后 为未来研究提供了一些建议(The three-dimensional point cloud normal vector estimation summarized obtain convenient, represents a simple, flexible, and becoming one of the methods commonly used three-dimensional model represents the point cloud. Normal vector of one of the as point clouds essential attributes, its estimation method has important position in the point cloud processing. On the other hand, the noise is inevitable in the process to obtain because of the point cloud, error and occlusion, point cloud typically contains noise outside point and empty, and part of the sampling model such as CAD models, there will still be sharp features, which gave the normal vector estimated that presents a challenge. Overview of current existing point cloud normal vector estimation algorithm, analysis of the principle and key technologies, and analyzed their ability to deal with the noise, the outer points and sharp features and gives comparison, and finally provide some suggestions for future research)

数学建模，第十三讲，报童模型课件，相关的一个代码(Mathematical modeling the newsboy model courseware, the code)

Equal area azimuthal projection

此函数包含了IBP算法的matlab源码程序，共享给大家共同学习(This function includes the IBP algorithm matlab source program, to share common learning)

本程序基于Matlab，可以对特定波长光线在透镜系统中进行光线追迹。可以生成任意方向平行光，点光源任意角度光线，并对全反射，光线射出系统等特殊情况用红色标出。透镜数任意，透镜参数可设。(The program is based on Matlab, with a specific wavelength of light in the lens system for ray tracing. Parallel light can be generated in any direction, at any angle point source of light, and the reflection of light injection system and other special circumstances marked in red. Any number of lenses, lens parameters can be set.)

信号处理与分析，信道仿真，模型构建与验证，信道测试，(Analysis and processing, signal channel simulation, construction and validation of the model, channel test,)