意大利ATOS比例閥DHZO-TE-051-L5/Y 40 ATOS比例閥主要體現在以下幾點(dian): 1.驅(qu)動(dong)裝(zhuang)置不同。比(bi)(bi)例閥的驅(qu)動(dong)裝(zhuang)置是比(bi)(bi)例電磁鐵;伺服閥的驅(qu)動(dong)裝(zhuang)置是力馬(ma)達或(huo)力矩馬(ma)達; 2.性(xing)能(neng)參數(shu)不(bu)同。滯(zhi)環(huan)(huan)、中位死區、頻寬、過濾(lv)精(jing)度(du)等特性(xing)不(bu)同,因此應用場(chang)合不(bu)同,伺(si)服閥(fa)和伺(si)服比例閥(fa)主要應用在(zai)閉環(huan)(huan)控制系(xi)統,其它結構(gou)的比例閥(fa)主要應用在(zai)開環(huan)(huan)控系(xi)統及(ji)閉環(huan)(huan)速度(du)控制系(xi)統; - 伺服閥中位沒有死區,比(bi)例閥有中位死區;
- 伺服閥的(de)頻響(響應(ying)頻率)更高(gao),可以高(gao)達200Hz左右,比例閥一般zui高(gao)幾十Hz;
- 伺服(fu)閥對液壓油液的要(yao)(yao)求(qiu)(qiu)更(geng)高,需(xu)要(yao)(yao)精過濾才行,否則容易堵塞,比例閥要(yao)(yao)求(qiu)(qiu)低一些;
3.閥芯(xin)(xin)結(jie)構及(ji)加工精(jing)度(du)不(bu)同。比(bi)例閥采用閥芯(xin)(xin)+閥體結(jie)構,閥體兼作閥套。伺(si)服閥和伺(si)服比(bi)例閥采用閥芯(xin)(xin)+閥套的(de)結(jie)構。 4.中(zhong)位機能(neng)(neng)種類不(bu)同。比例換(huan)向(xiang)閥具有(you)與普通換(huan)向(xiang)閥相似的中(zhong)位機能(neng)(neng),而伺(si)服閥中(zhong)位機能(neng)(neng)只有(you)O型(xing)(xing)(Rexroth產品的E型(xing)(xing))。 5.閥的額定壓降不(bu)同(tong)。 電(dian)氣(qi)比(bi)例閥(fa)(fa)自動控(kong)(kong)(kong)制(zhi)(zhi)可分成斷續控(kong)(kong)(kong)制(zhi)(zhi)和(he)(he)連續控(kong)(kong)(kong)制(zhi)(zhi)。斷續控(kong)(kong)(kong)制(zhi)(zhi)即(ji)開(kai)關控(kong)(kong)(kong)制(zhi)(zhi)。氣(qi)動控(kong)(kong)(kong)制(zhi)(zhi)系(xi)統(tong)(tong)中使用動作頻(pin)率較(jiao)低(di)的(de)(de)開(kai)關式(shi)(ON-OFF)的(de)(de)換向閥(fa)(fa)來(lai)控(kong)(kong)(kong)制(zhi)(zhi)氣(qi)路的(de)(de)通(tong)斷。靠(kao)減壓(ya)閥(fa)(fa)來(lai)調節所(suo)需要(yao)的(de)(de)壓(ya)力(li),靠(kao)節流閥(fa)(fa)來(lai)調節所(suo)需要(yao)的(de)(de)流量(liang)。這(zhe)種傳統(tong)(tong)的(de)(de)氣(qi)動控(kong)(kong)(kong)制(zhi)(zhi)系(xi)統(tong)(tong)要(yao)想要(yao)有(you)多(duo)(duo)個(ge)輸(shu)出力(li)和(he)(he)多(duo)(duo)個(ge)運動速度,就需要(yao)多(duo)(duo)個(ge)減壓(ya)閥(fa)(fa)、節流閥(fa)(fa)及換向閥(fa)(fa)。這(zhe)樣(yang),不(bu)僅元件需要(yao)多(duo)(duo),成本高,構成系(xi)統(tong)(tong)復(fu)雜,且(qie)許多(duo)(duo)元件都需要(yao)預先進行(xing)人工調節。電(dian)氣(qi)比(bi)例閥(fa)(fa)控(kong)(kong)(kong)制(zhi)(zhi)屬(shu)于連續控(kong)(kong)(kong)制(zhi)(zhi),其(qi)特(te)點(dian)是輸(shu)出量(liang)隨輸(shu)入(ru)(ru)量(liang)的(de)(de)變(bian)化(hua)而變(bian)化(hua),輸(shu)出量(liang)與輸(shu)入(ru)(ru)量(liang)之間存在一定的(de)(de)比(bi)例關系(xi)。比(bi)例控(kong)(kong)(kong)制(zhi)(zhi)有(you)開(kai)環(huan)控(kong)(kong)(kong)制(zhi)(zhi)和(he)(he)閉(bi)環(huan)控(kong)(kong)(kong)制(zhi)(zhi)之分。 ??意大利ATOS比例閥DHZO型號: DHZO-ATE-073-P3/B/DP27SB 20 DHZO-T-051-L1 DHZO-T-051-L5 31 DHZO-T-071-D5 DHZO-T-071-L5 DHZO-T-071-S5 DHZO-TE-051-L5/Y 40 DHZO-TE-071-L5 DHZO-TE-071-S5 40 /PE DHZO-TE-073-S5 ??意大利ATOS比例閥DHZO-TE-051-L5/Y 40? |