锁相环

ANSYS命令流：高速铁路轨道有限元分析、火车过桥全过程仿真、斜齿轮、叶片冲撞分析(ANSYS command flow: finite element analysis of high speed railway track, whole process simulation of train crossing, analysis of helical gear and blade impact)

It is an iterative algorithm that starts with an arbitrary solution to a problem

旅行商问题(TravelingSalesmanProblem，TSP)是一个经典的组合优化问题。经典的TSP可以描述为：一个商品推销员要去若干个城市推销商品，该推销员从一个城市出发，需要经过所有城市后，回到出发地。应如何选择行进路线，以使总的行程最短。从图论的角度来看，该问题实质是在一个带权完全无向图中，找一个权值最小的Hamilton回路。由于该问题的可行解是所有顶点的全排列，随着顶点数的增加，会产生组合爆炸，它是一个NP完全问题。(Traveling Salesman Problem (TSP) is a classic combinatorial optimization problem. The classic TSP can be described as: a merchandiser sells goods to several cities. The salesman starts from a city and needs to go through all the cities and return to the starting point. How to choose the route of travel so that the total journey is the shortest. From the point of view of graph theory, the essence of the problem is to find a Hamilton loop with the smallest weight in a completely undirected graph with weights. Since the feasible solution to this problem is the full permutation of all vertices, as the number of vertices increases, a combinatorial explosion occurs, which is an NP-complete problem.)

计算4节点系统的潮流计算,采用的是牛顿-拉夫逊算法(calculate the 4-node power flow calculation with Newton-Raphson algirihtm)

計算機，可以自行延伸，很簡單的寫法，希望可以幫助有需要的人(Computer, you can extend its own, very simple wording, I hope to help people in need)

说明：  光伏逆变电源并网，并网光伏发电完整模型，用来进行PSCAD仿真(Grid-connected Inverter Power Supply)

介绍如何用单片机配置FPGA，仅供参考，如有疑问请联系我。-how to use microcontroller FPGA configuration, for reference purposes only, if any questions, please contact me.

一些關於查詢的簡單源碼...........................................................................(On a simple query-source)

VC++实现窗口化的Ping 源码，比CMD中的Ping更好用，操作起来也方便了，可以按指定次数连续Ping，还可以按给定的数量连续PING指定IP，或PING域名也可以，虽然程序本身大家或许不怎么用，但从中你可了解许多VC++关于网络方面的编程知识。

odrviewer orginal for openDrive