IUVS--huabianyuan

this file is about band structure of 3d photonic crystal.in this program we use the pwe methode for calculation of band structure

用MATLAB编写的基于虚拟磁链的逆变器控制仿真(virtual flux， matlab)

《精通MATLAB科学计算》一书的实例源代码，有很多例子，可供电子书的用户学习参考。(" Proficient in MATLAB scientific computing," one example of the book source code, users of e-books available for reference study.)

用来计算地球表面两点之间的距离，该程序通过输入两点的经纬度坐标确定两点的距离，可用于各种工程应用当中(The Earth s surface used to calculate the distance between two points, two points in the program by entering the latitude and longitude coordinates to determine the distance between two points can be used in a variety of engineering applications which)

The distribution network has characteristics different from the transmission system. Distribution networks are commonly 1. three-phase unbalanced 2. radial with sometimes weakly meshed topology 3. with high resistance to reactance (r/x) rations here, an equivalent current injection method is used in rectangular coordinates to analyse the given radial distribution system. The FDLF method uses the NR-algorithm, with a constant Jacobian matrix. This matrix is further decoupled into two identical sub-Jacobian matrices.

说明：  实现数字水印的嵌入，提取，以及受攻击后的提取(The realization of digital watermark embedding, extraction, and the extraction after attack)

两种滤波方法在导航上的应用，并且进行比较(Filter in the navigation on the two applications, and to compare)

一个真实的matlab区域分割后再用白色边界线进行叠加的例子子。(A true matlab region segmentation example sub and then superimposed on the white boundary line.)

谢菲尔德大学的遗传算法包 可以进行遗传算法的优化(Genetic Algorithms Pack of Sheffield University The genetic algorithm can be optimized)

本代码详细的讲述了平面四连杆机构的运动学仿真，包括对连杆的加速度、位移及速度图像分析！(The code detailed story of the plane kinematics simulation of the four-bar linkage, including acceleration, displacement and speed of the link image analysis!)