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美國(guó)派克BD系列伺服閥#派克伺服閥圖片
液控伺是在伺服系統(tǒng)中將電信號(hào)輸入轉(zhuǎn)換為功率較大的壓力或流量壓力信號(hào)輸出的執(zhí)行元件。它是一 種電液轉(zhuǎn)換和功率放大元件。伺服閥的靈敏度高,快速性好,能將很小的電信號(hào)(例如10毫安)轉(zhuǎn)換成很大的液壓功率(如幾十匹馬力以上),可以驅(qū)動(dòng)多種類型的負(fù)載。過(guò)去人們?cè)褔娮鞕n板閥、射流管或滑閥伺服馬達(dá)等液壓放大裝置都列入伺服閥范圍內(nèi)。20世紀(jì)70年代以來(lái),伺服閥一般僅指電液伺服閥。 :宋珍
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美國(guó)派克BD系列伺服閥#派克伺服閥圖片
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