chaojidianrong

说明：  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.)

简洁动感的Flash图文导航和fla源文件——图文滚动菜单，打开后自动滚动菜单中的所有内容，从右向左滚动，当然这个滚动顺序自己是可以调节的，要在Flash脚本中改，你也可参考学习下Flash AS脚本的编写技巧，这里所使用的As脚本相对简单哦。

hslogic算法仿真,GPS数字中频处理，包括信号源的生成，捕获跟踪，用M文件写(Self made GPS digital intermediate frequency processing, including the generation of signal sources, acquisition and tracking, and writing with M files.)

一个带上传功能的JSP网页编辑器插件，可上传图片和文件，经过自定制适用于JSP的在线文本编辑器，运行效果如演示截图所示，看上去功能挺多，可满足一般的网页文本编辑。用法说明： 　　htmleditoreditorupapiupfile.jsp 这个文件是上传文件 　　以下是此文件的参数说明： 　　String url = "upload/"; 原图上传地址 　　String url2 = "upload/s/"; 缩略图上传地址 　　String geShi = "yyyyMMddhhmmss"; 上传后文件名命名规则 　　String filemulu = date.getBygeshi("yyyyMMdd"); 日期目录规则 　　float tagsize = 300; 缩略图大小 指宽度300，长度按照原有比例缩放

asp+excel农村农家书屋图书在线检索系统 v201904(ASP + excel online retrieval system for rural bookstores v201904)

说明：  matlab与tracepro自动优化演示，使之可以仅通过matlab调用tracepro软件，自动读取数据(MATLAB and TracePro automatic optimization)

利用平面波展开法计算二维声子晶体的固固组合Z模式声子晶体禁带(Calculating forbidden bands of two-dimensional phononic crystals in solid-solid Z mode by plane wave expansion method)

开源的PHP框架,我收藏了这个版本,需要的可以下载下来看看(Open source PHP framework)

首先阐述了光伏电池的工作原理及其数学模型，根据数学模型在 MATLAB仿真软件中搭建了光伏电池的工程通用仿真模型。同时，根据生产厂家提供的参数，分析了光伏电池的输出特性曲线，研究了光照强度和环境温度对光伏电池的影响。其次介绍了 MPPT 控制算法的工作原理，比较了 4 种常用控制算法的优缺点，针对单一控制算法无法兼顾跟踪精度和响应速度的问题，分析了基于扰动观察法的模糊控制 MPPT 组合算法并提出了一种新型组合 MPPT 算法，即基于电压自寻优的扰动观察算法。(Firstly, the working principle and mathematical model of photovoltaic cells are described. According to the mathematical model, a general engineering simulation model of photovoltaic cells is built in MATLAB simulation software. At the same time, according to the parameters provided by the manufacturer, the output characteristic curves of photovoltaic cells are analyzed, and the effects of light intensity and ambient temperature on photovoltaic cells are studied. Secondly, the working principle of MPPT control algorithm is introduced, and the advantages and disadvantages of four common control algorithms are compared. Aiming at the problem that single control algorithm can not give consideration to tracking accuracy and response speed, the fuzzy control MPPT combination algorithm based on disturbance observation method is analyzed and a new combined MPPT algorithm, namely voltage-based, is proposed. Self optimizing perturbation observation algorithm.)

STM32F407 例程 Libraries(STM32F407 routines Libraries)