该爬虫设计的关键: 1.control,交互界面,对爬虫的控制 2.analysis HTML,对HTML进行分析,从中提取心得hot link. 3.多线程.并发抓取页面
标签: HTML analysis control link
上传时间: 2014-01-08
上传用户:lmeeworm
2410开发板使用j-link的init文件
上传时间: 2017-05-09
上传用户:frank1234
Servomotors are available as AC or DC motors. Early servomotors were generally DC motors because the only type of control for large currents was through SCRs for many years. As transistors became capable of controlling larger currents and switching the large currents at higher frequencies, the AC servomotor became used more often. Early servomotors were specifically designed for servo amplifiers. Today a class of motors is designed for applica-tions that may use a servo amplifier or a variable-frequency controller, which means that a motor may be used in a servo system in one application, and used in a variable-frequency drive in another application. Some companies also call any closed-loop system that does not use a stepper motor a servo system, so it is possible for a simple AC induction motor that is connected to a velocity controller to be called a servomotor.
标签: motors Servomotors servomotors available
上传时间: 2014-08-10
上传用户:源码3
EMbedded programming for DC motor
标签: programming EMbedded motor for
上传时间: 2017-05-10
上传用户:moerwang
This is a torrent link to download Agilent VSA file.
标签: download Agilent torrent This
上传时间: 2014-03-03
上传用户:eclipse
It is an implementation of link list algorithm
标签: implementation algorithm link list
上传时间: 2017-05-20
上传用户:zhaiye
dc dc converter with fuzzy for rectifie and inveter
标签: converter rectifie inveter fuzzy
上传时间: 2013-12-22
上传用户:日光微澜
parallel connected pFC controller ac to dc dc to dc converter
标签: controller connected converter parallel
上传时间: 2017-05-20
上传用户:gxf2016
TP-LINK公司TL-WR941N无线路由器的Bootloader U_BOOT源代码,使用Atheros公司AR913x系列处理器,
标签: Bootloader TP-LINK U_BOOT TL-WR
上传时间: 2017-05-23
上传用户:123456wh
使用PWM控制器SG3524设计并制作了一种推挽型DC/DC变换器,输出电压可在30~36V可调,系统效率可以达到92 。整个变换器由C8051F020型单片机作为控制核心,可以将输入输出电压、电流和系统效率显示出来,并可以对输出电压预设和步进调整,还可以实现过流保护和过压欠压指示,完成了基本部分和发挥部分的所有要求。使用PWM控制器SG3524设计并制作了一种推挽型DC/DC变换器,输出电压可在30~36V可调,系统效率可以达到92 。整个变换器由C8051F020型单片机作为控制核心,可以将输入输出电压、电流和系统效率显示出来,并可以对输出电压预设和步进调整,还可以实现过流保护和过压欠压指示,完成了基本部分和发挥部分的所有要求。使用PWM控制器SG3524设计并制作了一种推挽型DC/DC变换器,输出电压可在30~36V可调,系统效率可以达到92 。整个变换器由C8051F020型单片机作为控制核心,可以将输入输出电压、电流和系统效率显示出来,并可以对输出电压预设和步进调整,还可以实现过流保护和过压欠压指示,完成了基本部分和发挥部分的所有要求。
上传时间: 2017-05-23
上传用户:xymbian