合成地震记录seismic_syn.m

电力系统静态稳定分析，小扰动分析法，简单算法(Static stability analysis of power system small disturbance analysis, a simple algorithm)

用ASP写的网上教学交互平台,有利于网上教学,适网上求学()

本程序为电力系统潮流计算PQ法，计算结果正确，画出图形不正确。需自行改正(This procedure for the PQ power system power flow calculation method, calculation is correct, draw graphics incorrect. To be self-corrected)

水准平差程序，可以处理间接平差各个等级水准，采用VB编写(Leveling adjustment program, which can handle all levels of indirect adjustment, is written in VB)

牛顿－拉夫逊法潮流计算 基本步骤： 　　（1）形成节点导纳矩阵 　　（2）将各节点电压设初值U， 　　（3）将节点初值代入相关求式，求出修正方程式的常数项向量 　　（4）将节点电压初值代入求式，求出雅可比矩阵元素 　　（5）求解修正方程，求修正向量 　　（6）求取节点电压的新值 　　（7）检查是否收敛，如不收敛，则以各节点电压的新值作为初值自第3步重新开始进行狭义次迭代，否则转入下一步 　　（8）计算支路功率分布，PV节点无功功率和平衡节点柱入功率。(Newton-Raphson method flow calculation basic steps : (1) formation of nodal admittance matrix (2) to set up the initial node voltage U, (3) the initial node-generation-related demand. calculated that the constant term formula Vector (4) nodes will be incorporated into the initial voltage-seeking, calculated Jacobian matrix elements (5) solving that equation, seek to amend the vector (6) to strike a new node voltage value (7) to check whether convergence, if not restrained. concentrated in the nodes of the new voltage as the initial value since the first three steps to re-start the narrow iterations. Otherwise, turn into the next (8) Calculation branch power distribution, PV nodes reactive power and balance-node into power.)

说明：  这是一个变电站的监控程序，数据库采用的是sql server7.0(This is a substation of the monitoring program, the database is used in sql server7.0)

ABAQUS中硅材料参数定义方法，采用python参数化建模(How to define the anisotropic parameters of silicon in ABAQUS through python.)

用c++做的汽车4s店销售系统（mfc） 录入查询库存预定等功能模块 头文件中定义 class CAutomobile4SshopDlg : public CDialog 头文件中定义class sale : public CDialog class service : public CDialog class storage : public CDialog class guanli : public CDialog 分别作销售，服务，库存，管理功能模块函数体调用 #define IDM_ABOUTBOX 0x0010 #define IDD_ABOUTBOX 100 #define IDS_ABOUTBOX 101 #define IDD_AUTOMOBILE4SSHOP_DIALOG 102 .....宏定义为函数体调用(Using c++ to do car 4s shop sales system (mfc) Input query inventory reserve and other functional modules Header file defines class CAutomobile4SshopDlg: public CDialog Header file defines class sale: public CDialog class service: public CDialog class storage: public CDialog class guanli: public CDialog Respectively, for sales, service, inventory management function module calls the function body # define IDM_ABOUTBOX 0x0010 # define IDD_ABOUTBOX 100 # define IDS_ABOUTBOX 101 # define IDD_AUTOMOBILE4SSHOP_DIALOG 102 Defined as a function of the body ..... macro call)

小电流系统接地选线仿真模型及稳态零序功率方向法仿真算法(Simulation model of grounding fault location for small current system and simulation algorithm of steady zero sequence power direction method)

使用CW方程，使用最小能量，采用脉冲推力，实现在一天内两航天器的交会对接。本质上就是一个交会轨道优化问题，由给定的条件优化选取设计变量，使目标函数得到最优值。(Using the CW equation, use the minimum energy, the use of pulse thrust, to achieve in a day two spacecraft rendezvous and docking. Is essentially an intersection orbit optimization problem, by the given conditions to optimize the selection of design variables, so that the objective function to get the optimal value.)