光電編碼器，是一種通過光電轉(zhuǎn)換將輸出軸上的機(jī)械幾何位移量轉(zhuǎn)換成電脈沖或電子數(shù)字量的傳感器。這是目前應(yīng)用最多的傳感器，光電編碼器是由光柵盤和光電檢測等裝置組成。光柵盤是在一定直徑的圓板上均勻地開設(shè)扇形透光通道。
由于光電編碼器與電動機(jī)同軸，電動機(jī)旋轉(zhuǎn)時，光柵盤與電動機(jī)同步旋轉(zhuǎn)，經(jīng)發(fā)光二極管等電子元件組成的檢測裝置檢測輸出若干脈沖信號，通過計算在一定時間內(nèi)的輸出脈沖的個數(shù)就能反映當(dāng)前電動機(jī)的轉(zhuǎn)速。此外，為判斷旋轉(zhuǎn)方向，編碼器還可提供電氣相位相差90度的脈沖信號。
內(nèi)密控增量式編碼器
增量式編碼器是直接利用光電轉(zhuǎn)換原理輸出三組方波脈沖A、B和Z相；A、B兩組脈沖相位差90度Z相為每轉(zhuǎn)一個脈沖，用于基準(zhǔn)點(diǎn)定位。它的優(yōu)點(diǎn)是原理構(gòu)造簡單，機(jī)械平均壽命可在幾萬小時以上，抗干擾能力強(qiáng)，可靠性高，適合于長距離傳輸。其缺點(diǎn)是無法輸出軸轉(zhuǎn)動的絕對位置信息。
曾經(jīng)有一個優(yōu)質(zhì)的產(chǎn)家擺在我的面前（廈門興潤星）我沒有珍惜，
等我失去的時候才追悔莫及，
人間最痛苦的事莫過于此，
你的鼠標(biāo)請點(diǎn)擊廈門興潤星吧，不用在猶豫了！
如果上天能給我一次再來一次的機(jī)會
，我會對廈門興潤星說三個字：我來了，
如果上天讓我找到廈門興潤星，我希望是興潤星--小謝！
優(yōu)勢品牌：
現(xiàn)貨 TRICONEX 3511 Foxboro 控制處理器 CP40B 卡件 勁爆價
【來電咨詢】：謝先生（銷售工程師）++工作QQ ：1323360927++ 電話：0592-6895323 18030245308++郵箱：1323360927@qq.com++傳真：0592-56034581（請備注“謝先生”收）以便我及時聯(lián)系您！
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