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标签： nmvhjtdyewrtwert safsdrghfydjg kukugilihg
上传时间： 2017-05-08
上传用户：天涯
自己AC的zju_acm上的若干个题目,都是自己辛辛苦苦AC的。
标签： zju_acm
上传时间： 2017-05-09
上传用户：hanli8870
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
this is a Implementation of a B* tree,not yet completed, because I need help for this task.
标签： this Implementation completed because
上传时间： 2013-11-27
上传用户：xinyuzhiqiwuwu
数据结构B-TREE的java实现，按照CLRS的思路描述，通过测试~
上传时间： 2013-12-11
上传用户：xinyuzhiqiwuwu
步进电机控制 p1.4-p1.7控制a,b,c,d四个相位开关 汇编实现
上传时间： 2017-05-12
上传用户：003030
这是基于b/s模式的在线答疑系统的设计方案,适合做毕业设计时用.
上传时间： 2014-07-10
上传用户：asasasas
本人毕业设计的设计方案,所做系统为基于b/s的课程在线答疑系统,适合毕业设计的学生参考
上传时间： 2013-12-20
上传用户：lhc9102
基于MCS-51单片机调频调相信号发生器 功能:A路能产生2~200HZ/分钟频率可调 @ B路能产生同A路相位滞后0~180读可调 @ 可以键盘设定频率和相位 @ 可以显示频率和相位
上传时间： 2017-05-14
上传用户：jeffery
】文中重点讨论基于单片机的光电脉冲编码器计数器的软件倍频和辨向原理,并从编码 盘条纹和位置检测元件的空间分布原理出发给出了在编码器输出A、B 正交方波的前提下最多只 能4 倍频的结论,最后介绍了集倍频、辨向、计数于一体的单片机计数器原理,该计数器具有消除抖 动误计数、倍频数可选、计数长度无限制的特点
上传时间： 2013-12-15
上传用户：stampede
