power_turbine

说明：  用matlab编程实现电力系统P-Q分解法的节点编号最优化(Power system with matlab programming PQ decomposition node number optimization)

基于静脉细化的基础上，判断是否为分叉点或者节点，去除静脉中毛刺。(Refinement based on the basis of vein, to determine whether the bifurcation point, or node, remove the veins in the burr.)

this code is for sugar test .............................

说明：  针对铣削过程建立的动力学方程，推导出可用以指导加工的稳定性叶瓣图，获得各主轴转速下对应的极限切深。(According to the dynamic equation of milling process, the stable lobe diagram which can be used to guide machining is derived, and the corresponding limit cutting depth of each spindle speed is obtained.)

用ＭＡＴＬＡＢ语言实现电流源立体方向图的绘制(MATLAB language with the direction of the current source three-dimensional mapping)

Double_buck_PI_Control.rar,功率电子领域matlab仿真文件，已经验证过，程序运行正常(Double_buck_PI_Control.rar,Power electronics field matlab simulation file, has already been verified, the normal operating procedures)

code for sattelite calculaton

hundreds or thousands of low cost nodes which could either have a fixed location or randomly

PCA人脸识别算法，识别率达到99 ，采用小波变换的方法及主成分分析法。(PCA face recognition algorithm, the recognition rate up to 99 , using wavelet transform methods and principal component analysis.)

The method works as follows. 1. For a data set with dimensionality, d, compute the variance of data in each dimension (column). 2. Find the column with maximum variance call it cvmax and sort it in any order. 3. Divide the data points of cvmax into K subsets, where K is the desired number of clusters. 4. Find the median of each subset. 5. Use the corresponding data points (vectors) for each median to initialize the cluster centers.