對于伺服閥的結構以及工作原理，您了解多少呢，今天西安比例伺服小編就給大家分享一下關于伺服閥的相關知識小知識：

伺服閥結構：

1、銜鐵；2、擋板(ban)；3、噴嘴；4、反饋桿(gan)（既(ji)彈(dan)簧片）；5、滑閥(fa)；6、濾(lv)網(wang)；P1：滑閥(fa)左邊(bian)控(kong)制油(you)壓；P2：滑閥(fa)右邊(bian)控(kong)制油(you)壓；P3、P4：壓力油(you)；P5：通油(you)動機活塞下部；P6：集成塊上連(lian)接盲板(ban)注：P3、P4壓力油(you)未經過6（濾(lv)網(wang)），P1、P2滑閥(fa)控(kong)制油(you)經過6（濾(lv)網(wang)）

電液(ye)轉(zhuan)(zhuan)(zhuan)化器是(shi)由一(yi)個(ge)力矩(ju)(ju)電動(dong)機、兩(liang)級液(ye)壓放大和機械反(fan)饋(kui)系統等(deng)組成(cheng)。力矩(ju)(ju)電動(dong)機是(shi)由一(yi)個(ge)兩(liang)側(ce)繞(rao)有線(xian)圈(quan)的(de)(de)水久磁(ci)鐵(tie)組成(cheng)。當伺服放大器輸出的(de)(de)電流(liu)改變時(shi),電液(ye)何(he)服閥內力矩(ju)(ju)電動(dong)機的(de)(de)銜鐵(tie)線(xian)圈(quan)中有電流(liu)通(tong)過(guo),產生一(yi)磁(ci)場(chang),在其兩(liang)側(ce)磁(ci)鐵(tie)的(de)(de)作用下,產生一(yi)旋轉(zhuan)(zhuan)(zhuan)力矩(ju)(ju),使銜鐵(tie)旋轉(zhuan)(zhuan)(zhuan)并(bing)帶彈動(dong)與之相連的(de)(de)擋板轉(zhuan)(zhuan)(zhuan)動(dong)。

伺(si)服閥工作原理：

汽閥開啟(qi)過(guo)程(cheng)：DEH控(kong)制器發出閥位開啟(qi)指(zhi)令，通(tong)(tong)過(guo)電(dian)磁(ci)作(zuo)用，將擋板轉(zhuan)動(dong)，擋板移近左(zuo)邊(bian)噴(pen)(pen)嘴(zui)(zui)時(shi),該(gai)噴(pen)(pen)嘴(zui)(zui)的(de)(de)泄油(you)(you)(you)(you)(you)面(mian)積減小(xiao),使流(liu)量減小(xiao),噴(pen)(pen)嘴(zui)(zui)前(qian)的(de)(de)油(you)(you)(you)(you)(you)壓(ya)(ya)P1升(sheng)高；與此同時(shi)右邊(bian)噴(pen)(pen)嘴(zui)(zui)與擋板的(de)(de)距(ju)離增大(da),流(liu)量增加, 噴(pen)(pen)嘴(zui)(zui)前(qian)的(de)(de)油(you)(you)(you)(you)(you)壓(ya)(ya)P2降低。由于擋板兩(liang)側(ce)噴(pen)(pen)嘴(zui)(zui)前(qian)的(de)(de)油(you)(you)(you)(you)(you)壓(ya)(ya)與下部(bu)滑閥的(de)(de)端部(bu)油(you)(you)(you)(you)(you)室(shi)是相通(tong)(tong)的(de)(de), 當兩(liang)只噴(pen)(pen)嘴(zui)(zui)前(qian)的(de)(de)油(you)(you)(you)(you)(you)壓(ya)(ya)不(bu)相等(deng)(deng)時(shi),則滑閥兩(liang)端的(de)(de)油(you)(you)(you)(you)(you)壓(ya)(ya)P1、P2也(ye)不(bu)相等(deng)(deng),P1>P2，差(cha)壓(ya)(ya)導致滑閥5向(xiang)右邊(bian)移動(dong)，使滑閥凸肩(jian)所控(kong)制的(de)(de)油(you)(you)(you)(you)(you)口開大(da)，P4壓(ya)(ya)力油(you)(you)(you)(you)(you)進入P5中，P5與油(you)(you)(you)(you)(you)動(dong)機活(huo)塞(sai)(sai)下部(bu)相連,控(kong)制通(tong)(tong)往(wang)油(you)(you)(you)(you)(you)動(dong)機活(huo)塞(sai)(sai)下腔的(de)(de)高壓(ya)(ya)油(you)(you)(you)(you)(you),使油(you)(you)(you)(you)(you)動(dong)機活(huo)塞(sai)(sai)上(shang)升(sheng)，開大(da)汽閥。

汽閥(fa)(fa)關(guan)閉(bi)過(guo)程：在DEH控制器(qi)發(fa)出閥(fa)(fa)位關(guan)閉(bi)指(zhi)令，通(tong)過(guo)電(dian)磁作用，將擋(dang)板(ban)轉動，擋(dang)板(ban)移(yi)近右(you)邊噴(pen)(pen)嘴(zui)時(shi),該噴(pen)(pen)嘴(zui)的泄油(you)(you)面積(ji)減小,使(shi)流量(liang)減小,噴(pen)(pen)嘴(zui)前(qian)的油(you)(you)壓P2升高；與(yu)此同時(shi)右(you)邊噴(pen)(pen)嘴(zui)與(yu)擋(dang)板(ban)的距(ju)離增大(da),流量(liang)增加, 噴(pen)(pen)嘴(zui)前(qian)的油(you)(you)壓P1降低。由于(yu)擋(dang)板(ban)兩(liang)側噴(pen)(pen)嘴(zui)前(qian)的油(you)(you)壓與(yu)下部滑閥(fa)(fa)的端(duan)部油(you)(you)室是相(xiang)通(tong)的, 當(dang)兩(liang)只噴(pen)(pen)嘴(zui)前(qian)的油(you)(you)壓不相(xiang)等(deng)時(shi),則滑閥(fa)(fa)兩(liang)端(duan)的油(you)(you)壓P1、P2也不相(xiang)等(deng),P2>P1，差壓導(dao)致滑閥(fa)(fa)5向左邊移(yi)動，使(shi)滑閥(fa)(fa)凸肩所控制的油(you)(you)口開大(da)，P5油(you)(you)動機下腔油(you)(you)泄掉進入(ru)P7有壓回油(you)(you)中，使(shi)油(you)(you)動機活(huo)塞下降，關(guan)小汽閥(fa)(fa)開度。

備注：P6油(you)(you)腔室(shi)的接(jie)口在油(you)(you)動(dong)機(ji)集成塊(kuai)上(shang)是盲板，沒有與油(you)(you)動(dong)機(ji)的進油(you)(you)口相連。