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.
標(biāo)簽： motors Servomotors servomotors available
上傳時(shí)間： 2014-08-10
上傳用戶：源碼3
EMbedded programming for DC motor
標(biāo)簽： programming EMbedded motor for
上傳時(shí)間： 2017-05-10
上傳用戶：moerwang
this is a Implementation of a B* tree,not yet completed, because I need help for this task.
標(biāo)簽： this Implementation completed because
上傳時(shí)間： 2013-11-27
上傳用戶：xinyuzhiqiwuwu
數(shù)據(jù)結(jié)構(gòu)B-TREE的java實(shí)現(xiàn)，按照CLRS的思路描述，通過測(cè)試~
標(biāo)簽： B-TREE java 數(shù)據(jù)結(jié)構(gòu)
上傳時(shí)間： 2013-12-11
上傳用戶：xinyuzhiqiwuwu
步進(jìn)電機(jī)控制 p1.4-p1.7控制a,b,c,d四個(gè)相位開關(guān) 匯編實(shí)現(xiàn)
標(biāo)簽： 1.4 1.7 步進(jìn)電機(jī)控制 控制
上傳時(shí)間： 2017-05-12
上傳用戶：003030
這是基于b/s模式的在線答疑系統(tǒng)的設(shè)計(jì)方案,適合做畢業(yè)設(shè)計(jì)時(shí)用.
標(biāo)簽： 模式 畢業(yè)設(shè)計(jì) 設(shè)計(jì)方案
上傳時(shí)間： 2014-07-10
上傳用戶：asasasas
本人畢業(yè)設(shè)計(jì)的設(shè)計(jì)方案,所做系統(tǒng)為基于b/s的課程在線答疑系統(tǒng),適合畢業(yè)設(shè)計(jì)的學(xué)生參考
標(biāo)簽： 畢業(yè)設(shè)計(jì) 設(shè)計(jì)方案
上傳時(shí)間： 2013-12-20
上傳用戶：lhc9102
基于MCS-51單片機(jī)調(diào)頻調(diào)相信號(hào)發(fā)生器 功能:A路能產(chǎn)生2~200HZ/分鐘頻率可調(diào) @ B路能產(chǎn)生同A路相位滯后0~180讀可調(diào) @ 可以鍵盤設(shè)定頻率和相位 @ 可以顯示頻率和相位
上傳時(shí)間： 2017-05-14
上傳用戶：jeffery
】文中重點(diǎn)討論基于單片機(jī)的光電脈沖編碼器計(jì)數(shù)器的軟件倍頻和辨向原理,并從編碼 盤條紋和位置檢測(cè)元件的空間分布原理出發(fā)給出了在編碼器輸出A、B 正交方波的前提下最多只 能4 倍頻的結(jié)論,最后介紹了集倍頻、辨向、計(jì)數(shù)于一體的單片機(jī)計(jì)數(shù)器原理,該計(jì)數(shù)器具有消除抖 動(dòng)誤計(jì)數(shù)、倍頻數(shù)可選、計(jì)數(shù)長(zhǎng)度無(wú)限制的特點(diǎn)
標(biāo)簽： 倍頻 單片機(jī) 光電 位置檢測(cè)
上傳時(shí)間： 2013-12-15
上傳用戶：stampede
】文中重點(diǎn)討論基于單片機(jī)的光電脈沖編碼器計(jì)數(shù)器的軟件倍頻和辨向原理,并從編碼 盤條紋和位置檢測(cè)元件的空間分布原理出發(fā)給出了在編碼器輸出A、B 正交方波的前提下最多只 能4 倍頻的結(jié)論,最后介紹了集倍頻、辨向、計(jì)數(shù)于一體的單片機(jī)計(jì)數(shù)器原理,該計(jì)數(shù)器具有消除抖 動(dòng)誤計(jì)數(shù)、倍頻數(shù)可選、計(jì)數(shù)長(zhǎng)度無(wú)限制的特點(diǎn)
標(biāo)簽： 倍頻 單片機(jī) 光電 位置檢測(cè)
上傳時(shí)間： 2014-01-07
上傳用戶：watch100
蟲蟲下載站版權(quán)所有 京ICP備2021023401號(hào)-1
