django入门与实践

flash烧写的相关软件及方法，主要用于ARM板与主机交叉编译。供大家使用(flash burning)

6. Testing is the process of evaluating a system or its component(s) with the intent to find whether it satisfies the specified requirements or not. Testing is executing a system in order to identify any gaps, errors, or missing requirements in contrary to the actual requirements.

说明：  CAN实验,通讯过程 实验,通讯过程实验,通讯过程(Experiments, communication processes)

VC++重启电脑 关闭计算机、注销登录实例，电脑关机模块的程序代码，可用在VC++的软件里面，作为程序的辅助功能来使用，类似例子已经有很多了，每个都有各自的写法，仅供学习参考。

说明：  c#代码规范，文本资料，c#语言的代码规范用法(C # Code specification, text data, code specification usage in C # language)

C# 分组查询数据库内容，可将查询条件分组后进行整合查询，有效提升查询性能，本源码仅是提供一种思路，实际应用时，需要对代码进一步完善。

电压源代替电容器等效仿真模型，sssc基于pscad平台(Equivalent simulation model of voltage source instead of capacitor)

SVPWM的主要思想是以三相对称正弦波电压供电时三相对称电动机定子理想磁链圆为参考标准，以三相逆变器不同开关模式作适当的切换，从而形成PWM波，以所形成的实际磁链矢量来追踪其准确磁链圆。传统的SPWM方法从电源的角度出发，以生成一个可调频调压的正弦波电源，而SVPWM方法将逆变系统和异步电机看作一个整体来考虑，模型比较简单，也便于微处理器的实时控制。(The main idea of SVPWM is that the ideal magnetic chain circle of the three-phase symmetrical motor is used as the reference standard when the three-phase symmetric sine wave voltage is supplied, and the PWM wave is formed by the proper switching of the three phase inverters in different switching modes, and the accurate magnetic chain circle is traced with the actual flux vector formed. The traditional SPWM method starts from the angle of the power supply to generate a frequency modulation voltage regulating sinusoidal power supply. While the SVPWM method considers the inverter system and asynchronous motor as a whole, the model is simple and convenient for the real-time control of the microprocessor.)

说明：  带GUI界面的，可选择节点和支路的 对称短路的潮流计算(Power Flow Calculation of Symmetrical Short Circuit with GUI Interface)

说明：  牛顿拉夫森迭代方法可用于求解非线性方程组(Newton Rafson iterative method)