亨士樂(lè)編碼器德國(guó)原裝
一個(gè)編碼器的性能一般由分辨率來(lái)描述，而非測(cè)量精度。編碼器也許可能將運(yùn)動(dòng)非常準(zhǔn)確地解析至精密位，但每一位的精度受到待測(cè)機(jī)器的運(yùn)動(dòng)質(zhì)量的影響。比如，如果機(jī)器部件在負(fù)載下產(chǎn)生變形、或者傳動(dòng)絲杠上存在0.1 英寸的間隙，在測(cè)量時(shí)使用一個(gè)每圈1000個(gè)計(jì)數(shù)點(diǎn)，輸出精度0.001英寸的編碼器不會(huì)消除這0.1 英寸的誤差。編碼器只能用來(lái)反映位置，無(wú)法提高待測(cè)軸運(yùn)動(dòng)的基本精度。
注意：對(duì)于特定的機(jī)械設(shè)計(jì)，某些運(yùn)動(dòng)測(cè)量誤差，如絲杠或齒輪系統(tǒng)中的機(jī)械間隙和誤差可以通過(guò)一些更加*運(yùn)動(dòng)控制器進(jìn)行電子補(bǔ)償。
系統(tǒng)重復(fù)精度：重復(fù)精度是指受控機(jī)器部件重復(fù)定位至行程中同一點(diǎn)的誤差。重復(fù)精度一般小于系統(tǒng)分辨率，但是比系統(tǒng)精度稍微好些。一個(gè)2500個(gè)周期、雙通道編碼器能夠產(chǎn)生每轉(zhuǎn)10000個(gè)脈沖。通常在使用Dynapar編碼器時(shí)，該信號(hào)放大4倍后的精度會(huì)優(yōu)于±1個(gè)計(jì)數(shù)點(diǎn)。
亨士樂(lè)編碼器德國(guó)原裝
編碼器應(yīng)用于運(yùn)動(dòng)控制領(lǐng)域的參考指南和教程，包括編碼器類型、技術(shù)、應(yīng)用及安裝等。此篇文章介紹編碼器的類型。
編碼器是一種通過(guò)響應(yīng)運(yùn)動(dòng)來(lái)產(chǎn)生數(shù)字信號(hào)的傳感器，主要分為兩種類型：響應(yīng)旋轉(zhuǎn)運(yùn)動(dòng)的旋轉(zhuǎn)編碼器和響應(yīng)直線運(yùn)動(dòng)的線性編碼器。當(dāng)與機(jī)械傳動(dòng)裝置，如齒輪齒條、測(cè)量輪或主軸配合使用時(shí)，軸編碼器也可以用于測(cè)量直線運(yùn)動(dòng)、速度和位置。編碼器具有多種輸出方式。增量式編碼器在運(yùn)動(dòng)時(shí)生成一系列脈沖，用于測(cè)量速度或被反饋至計(jì)數(shù)器進(jìn)行位置跟蹤。而值編碼器則生成多位數(shù)字編碼來(lái)直接指示當(dāng)前位置。
編碼器用途廣泛。它們可作為反饋?zhàn)兯推饔糜陔姍C(jī)速度控制、作為傳感器用于測(cè)量、切割和定位、作為輸入用于速度速

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