digital1.pdf

这是分别基于两电平SVPWM和三电平SVPWM的PMSM矢量控制模型，对初学者比较实用，采用matlab2012以上版本打开！(This is based on two level SVPWM and three level SVPWM PMSM vector control model, more practical for beginners! Use matlab2012 or more to open.)

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.)

LonWorks NodeBuilder Gizmo 4 Users Guide

悬臂梁自由梁振动振型，可以根据要求设置尺寸、材料参数(The free beam vibration mode of cantilever beam can set the size and material parameters according to the requirement.)

基于Ansoft的变压器仿真，建立了完好的变压器模型，可以测量变压器个部分的磁场强度和电磁力分布(Based on the Ansoft transformer simulation, a good transformer model is established, which can measure the magnetic field intensity and electromagnetic force distribution of some parts of the transformer.)

Delphi ShellExecuteHook 源码示例，添加Url执行挂钩，释放资源到文件，定位资源，锁定内存，建立文件，写入文件，添加Hook，URL 执行挂钩 作者：By 麻子。

玫瑰图制作，用于波浪观测数据的处理和可视化(Rose diagram for the processing and visualization of wave observation data.)

说明：  一个简单的查找无向图最短路径的界面程序，练习用(A simple interface program for finding the shortest path of undirected graph.)

说明：  CPSO stands for constrained particle swarm optimization

手机三维游戏开发包，提供通用开发模块，减少游戏开发工作量-Three-dimensional mobile game development package, to provide a common development of modules, to reduce the workload of games development