熵权法

说明：  异步电机作为电网中较为主要的负荷，对其的控制一直是重要问题。在异步电机的起动过程中，若直接起动，则会引起较大的电流，会影响电网的稳定和安全；且起动转矩和运行效率也较低。为改善上述问题，使用软起动器对异步电机进行起动，可实现启动电压的无极调节，从而限制启动电流，可在一定程度上改善电机性能。本文采用电流闭环作为控制方式，并采用MATLAB对异步电机软起动系统进行模型搭建和仿真，进而说明了软起动的优势。(As the main load in the power network, the control of asynchronous motor is always an important problem.In the starting process of asynchronous motor, if directly started, it will cause a large current, will affect the stability and safety of the power grid;The starting torque and operating efficiency are also low.In order to improve the above problems, the use of soft starter to start the asynchronous motor can realize the non-pole adjustment of starting voltage, thus limiting the starting current, which can improve the motor performance to a certain extent.In this paper, the current closed-loop is adopted as the control mode, and MATLAB is used to build the model and simulate the soft starting system of asynchronous motor, and then the advantages of soft starting are illustrated.)

一些简单的信息学竞赛试题，以前做的。大家可以看看，有意见可以批评-some simple questions Informatics race before done. As we can see, there are views to be criticized

to study for student

又一款VB开发的指法练习打字软件，可练习中文和英文打字，练习的文字内容调用外部TXT文本文件，本软件除了指法练习外，还可进行打字考试，适时显示打字速度，正确率等信息。

家谱管理软件,树形控件操作,可保存文本和图片,查找快捷

主板BIOS升级工具,适合较古老的机器使用 8.48版-mainboard BIOS upgrade tools for ancient machines used version 8.48

说明：  3D图片彩色显示，拟合平面，点到面距离，面到面距离，提取区域高度值，提取线段区域高度值(3D picture color display, fitting plane, distance from point to surface, distance from surface to surface, extraction area height value, extraction line area height value)

下载管理- Downloading manages

LISP.Derivation of matrix elements in this order without the use of indexes

说明：  abstruct asigniment how to write