化工儀器網(wǎng)技術(shù)文章
P+F編碼器工作原理
閱讀：561 發(fā)布時(shí)間：2016-4-6 P+F編碼器是用來測量轉(zhuǎn)速的裝置,，光電式旋轉(zhuǎn)編碼器通過光電轉(zhuǎn)換,，可將輸出軸的角位移,、角速度等機(jī)械量轉(zhuǎn)換成相應(yīng)的電脈沖以數(shù)字量輸出（REP）。它分為單路輸出和雙路輸出兩種,。技術(shù)參數(shù)主要有每轉(zhuǎn)脈沖數(shù)（幾十個(gè)到幾千個(gè)都有）,，和供電電壓等。單路輸出是指旋轉(zhuǎn)編碼器的輸出是一組脈沖,，而雙路輸出的旋轉(zhuǎn)編碼器輸出兩組A/B相位差90度的脈沖,，通過這兩組脈沖不僅可以測量轉(zhuǎn)速，還可以判斷旋轉(zhuǎn)的方向,。
P+F編碼器,，工作原理：由一個(gè)中心有軸的光電碼盤，其上有環(huán)形通,、暗的刻線,，有光電發(fā)射和接收器件讀取,獲得四組正弦波信號組合成A、B,、C,、D,每個(gè)正弦波相差90度相位差（相對于一個(gè)周波為360度），將C,、D信號反向,，疊加在A、B兩相上,，可增強(qiáng)穩(wěn)定信號；另每轉(zhuǎn)輸出一個(gè)Z相脈沖以代表零位參考位,。
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