意大利ATOS比例閥主要體現在以下幾點: 1.驅動裝置不同(tong)。比(bi)例閥的(de)(de)驅動裝置是(shi)比(bi)例電磁鐵;伺服閥的(de)(de)驅動裝置是(shi)力馬達(da)或力矩馬達(da); 2.性(xing)能參數不同(tong)。滯環、中位死區(qu)、頻寬(kuan)、過濾精度(du)等特性(xing)不同(tong),因(yin)此應用場合(he)不同(tong),伺服(fu)閥和伺服(fu)比例閥主(zhu)要應用在閉環控(kong)(kong)制系(xi)統,其它結構的(de)比例閥主(zhu)要應用在開環控(kong)(kong)系(xi)統及閉環速度(du)控(kong)(kong)制系(xi)統; - 伺(si)服閥中(zhong)位沒有(you)(you)死區,比例閥有(you)(you)中(zhong)位死區;
- 伺服閥(fa)的頻(pin)響(響應頻(pin)率(lv))更高(gao)(gao),可以高(gao)(gao)達200Hz左(zuo)右,比例(li)閥(fa)一般zui高(gao)(gao)幾(ji)十(shi)Hz;
- 伺服閥對(dui)液(ye)壓油液(ye)的要求(qiu)更高,需(xu)要精過濾才(cai)行,否則容易(yi)堵塞(sai),比例閥要求(qiu)低一些;
3.閥(fa)芯結構及加(jia)工精度不(bu)同。比(bi)例閥(fa)采用閥(fa)芯+閥(fa)體結構,閥(fa)體兼作(zuo)閥(fa)套。伺服(fu)閥(fa)和伺服(fu)比(bi)例閥(fa)采用閥(fa)芯+閥(fa)套的結構。 4.中(zhong)位機能(neng)(neng)(neng)種類不同(tong)。比例換(huan)向閥具(ju)有與普(pu)通換(huan)向閥相似的中(zhong)位機能(neng)(neng)(neng),而伺服閥中(zhong)位機能(neng)(neng)(neng)只有O型(Rexroth產品的E型)。 5.閥的額定(ding)壓降不同。 電氣比(bi)(bi)例閥(fa)(fa)自(zi)動控(kong)(kong)(kong)(kong)制(zhi)可(ke)分成(cheng)(cheng)斷(duan)續(xu)控(kong)(kong)(kong)(kong)制(zhi)和(he)連(lian)續(xu)控(kong)(kong)(kong)(kong)制(zhi)。斷(duan)續(xu)控(kong)(kong)(kong)(kong)制(zhi)即開(kai)關(guan)控(kong)(kong)(kong)(kong)制(zhi)。氣動控(kong)(kong)(kong)(kong)制(zhi)系(xi)統中使用動作(zuo)頻率較低的(de)開(kai)關(guan)式(ON-OFF)的(de)換(huan)向閥(fa)(fa)來(lai)(lai)控(kong)(kong)(kong)(kong)制(zhi)氣路(lu)的(de)通(tong)斷(duan)。靠減(jian)壓閥(fa)(fa)來(lai)(lai)調(diao)節(jie)所需(xu)要(yao)(yao)的(de)壓力(li),靠節(jie)流閥(fa)(fa)來(lai)(lai)調(diao)節(jie)所需(xu)要(yao)(yao)的(de)流量。這種傳統的(de)氣動控(kong)(kong)(kong)(kong)制(zhi)系(xi)統要(yao)(yao)想要(yao)(yao)有多個(ge)輸(shu)出(chu)力(li)和(he)多個(ge)運(yun)動速度,就(jiu)需(xu)要(yao)(yao)多個(ge)減(jian)壓閥(fa)(fa)、節(jie)流閥(fa)(fa)及換(huan)向閥(fa)(fa)。這樣,不僅(jin)元(yuan)件需(xu)要(yao)(yao)多,成(cheng)(cheng)本高(gao),構(gou)成(cheng)(cheng)系(xi)統復雜,且許多元(yuan)件都需(xu)要(yao)(yao)預先進行人(ren)工調(diao)節(jie)。電氣比(bi)(bi)例閥(fa)(fa)控(kong)(kong)(kong)(kong)制(zhi)屬于(yu)連(lian)續(xu)控(kong)(kong)(kong)(kong)制(zhi),其特點是輸(shu)出(chu)量隨輸(shu)入量的(de)變化而變化,輸(shu)出(chu)量與輸(shu)入量之(zhi)間存在一定的(de)比(bi)(bi)例關(guan)系(xi)。比(bi)(bi)例控(kong)(kong)(kong)(kong)制(zhi)有開(kai)環控(kong)(kong)(kong)(kong)制(zhi)和(he)閉(bi)環控(kong)(kong)(kong)(kong)制(zhi)之(zhi)分。 意大利ATOS比例閥型號表: DKZOR-A-151-S5 DKZOR-A-151-S5/18 40 DKZOR-A-151-S5/B DKZOR-A-153-L5/B DKZOR-A-171-D5 40 DKZOR-A-171-L5 DKZOR-A-171-S5 DKZOR-A-171-S5/18 DKZOR-A-173-D5 DKZOR-A-173-L5 DKZOR-A-173-L5/18 40 DKZOR-A-173-L5/Y DKZOR-A-173-S3 DKZOR-A-173-S5 DKZOR-A-173-S5/18 DKZOR-AE-171-L5 10 DKZOR-AE-171-S5 DKZOR-AE-171-S5 10/WG DKZOR-AE-171-S5/Y 10 DKZOR-AE-173-D5 10 DKZOR-AE-173-L5 10 DKZORC-A-151-S5/18 DKZOR-T-151-L5 DKZOR-T-151-L5/Y DKZOR-T-153-L5 DKZOR-T-171-D5 DKZOR-T-171-L5 DKZOR-T-171-S5 DKZOR-T-171-S5/Y DKZOR-T-173-L5 40 DKZOR-TE-170-L5 40 DKZOR-TE-171-L5 DKZOR-TE-171-L5/I 40 DKZOR-TE-171-S5 |