etherwallet-3.21.0

虚拟同步机技术是将分布式电源、电动汽车、储能以及负荷变流器模拟为旋转同步机的技术，使得电力电子变流器能够像同步机一样具有大电网的同步机制，从而实现电力系统的自主运行。虚拟同步机技术为解决集中式风光消纳、大规模分布式能源、电动汽车和储能为电力系统带来的一系列挑战提供了一条崭新的思路和解决方案。(Virtual synchronous machine technology is a technology that simulates distributed power supply, electric vehicle, energy storage and load converter as rotary synchronous machine. It makes power electronic converter have synchronization mechanism of large power grid like synchronous machine, so as to realize the autonomous operation of power system. Virtual synchronous machine (VSM) technology provides a new way of thinking and solution to a series of challenges brought by centralized solar energy absorption, large-scale distributed energy, electric vehicles and energy storage for power system.)

9.1 利用差商近似导数 313 　　9.1.1 中点公式 313 　　9.1.2 利用Taylor公式构造差商公式 314 　　9.1.3 差商公式误差分析与步长优化 319 　　9.1.4 理查森外推法 321 　　9.2 插值型求导方法 323 　　9.3 样条求导 325 　　9.4 利用数值积分求导数 327 　　9.5 数值偏导数 329 　　9.6 MATLAB自带函数应用 329 　　9.6.1 diff函数 329 　　9.6.2 gradient函数 330 　　9.6.3 surfnorm函数 331 　　9.7 应用案例 333(Differential calculus Program code)

这是一个我自己开发的，可以通过定制模板来实现PowerBuilder中将数据窗口的一行导入到excel中的全局函数，功能非常强大-This is a development of my own, you can customize the templates to achieve the PowerBuilder DataWindow row will be imported into excel in the global function is very powerful

fault modeling of induction motor

This is the mobile phone fluid gesture.

windows api 在pb中的定义说明,希望对pb编程爱好者有所帮助-windows api pb in the definition shows, and I hope to pb programming enthusiasts help

This a 802.15.4 simulator for star topology. This provides energy consumption, throughput, delay, and many other performance metrics.-This is a 802.15.4 simulator for star topology. This provides energy consumption, throughput, delay, and many other performance metrics.

LCD图形数据生成软件源程序，图形大小任意，行列数据排列。-LCD graphics data generation software source code, graphics arbitrary size, with the ranks of data.

在微电网孤岛运行过程中用到VF控制，对此进行建模在Simulink搭建仿真模块(The VF control is used in the islanding operation of microgrid, and the simulation module is built in Simulink)

MATLAB修改polar.m的源代码，加上标注之类的(modify the source code of polar.m, plus annotations etc. in matlab)