意大利ATOS比例閥主要體現在以下幾點: 1.驅(qu)動(dong)裝置不同。比例(li)閥的(de)驅(qu)動(dong)裝置是比例(li)電磁(ci)鐵;伺服閥的(de)驅(qu)動(dong)裝置是力(li)馬(ma)(ma)達(da)或(huo)力(li)矩馬(ma)(ma)達(da); 2.性能參數不同(tong)。滯環、中(zhong)位(wei)死區、頻寬(kuan)、過濾(lv)精度等特性不同(tong),因此(ci)應用(yong)場合不同(tong),伺(si)服閥和伺(si)服比例(li)(li)閥主(zhu)要應用(yong)在閉(bi)環控制系統(tong),其它(ta)結構的(de)比例(li)(li)閥主(zhu)要應用(yong)在開(kai)環控系統(tong)及閉(bi)環速度控制系統(tong); - 伺服閥中位沒有死(si)區,比例閥有中位死(si)區;
- 伺服(fu)閥(fa)的頻(pin)響(響應頻(pin)率)更高(gao),可(ke)以高(gao)達200Hz左右,比(bi)例閥(fa)一般zui高(gao)幾十Hz;
- 伺服閥對(dui)液壓(ya)油液的要求(qiu)更高,需(xu)要精過濾(lv)才行,否則容易堵塞,比例閥要求(qiu)低一些;
3.閥(fa)(fa)芯結構及(ji)加工精(jing)度不同(tong)。比(bi)(bi)例閥(fa)(fa)采用(yong)閥(fa)(fa)芯+閥(fa)(fa)體結構,閥(fa)(fa)體兼作閥(fa)(fa)套(tao)。伺服(fu)閥(fa)(fa)和(he)伺服(fu)比(bi)(bi)例閥(fa)(fa)采用(yong)閥(fa)(fa)芯+閥(fa)(fa)套(tao)的(de)結構。 4.中(zhong)位機能種(zhong)類(lei)不(bu)同(tong)。比例換(huan)向閥具有(you)與普通換(huan)向閥相似的(de)中(zhong)位機能,而伺服閥中(zhong)位機能只有(you)O型(Rexroth產品的(de)E型)。 5.閥的額定壓降不(bu)同。 電氣比例(li)閥自(zi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)可分成斷(duan)續控(kong)(kong)(kong)(kong)制(zhi)(zhi)和(he)連續控(kong)(kong)(kong)(kong)制(zhi)(zhi)。斷(duan)續控(kong)(kong)(kong)(kong)制(zhi)(zhi)即(ji)開(kai)(kai)關(guan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)。氣動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)系(xi)統(tong)中使(shi)用動(dong)作頻(pin)率較(jiao)低的(de)開(kai)(kai)關(guan)式(shi)(ON-OFF)的(de)換(huan)向(xiang)閥來(lai)控(kong)(kong)(kong)(kong)制(zhi)(zhi)氣路的(de)通斷(duan)。靠減壓(ya)(ya)閥來(lai)調(diao)節(jie)所(suo)(suo)需(xu)(xu)要(yao)(yao)的(de)壓(ya)(ya)力(li),靠節(jie)流閥來(lai)調(diao)節(jie)所(suo)(suo)需(xu)(xu)要(yao)(yao)的(de)流量(liang)。這(zhe)種(zhong)傳統(tong)的(de)氣動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)系(xi)統(tong)要(yao)(yao)想要(yao)(yao)有(you)多個(ge)輸出(chu)力(li)和(he)多個(ge)運動(dong)速度,就需(xu)(xu)要(yao)(yao)多個(ge)減壓(ya)(ya)閥、節(jie)流閥及換(huan)向(xiang)閥。這(zhe)樣,不僅元(yuan)件(jian)需(xu)(xu)要(yao)(yao)多,成本高,構成系(xi)統(tong)復雜,且許多元(yuan)件(jian)都需(xu)(xu)要(yao)(yao)預先進行人工調(diao)節(jie)。電氣比例(li)閥控(kong)(kong)(kong)(kong)制(zhi)(zhi)屬于(yu)連續控(kong)(kong)(kong)(kong)制(zhi)(zhi),其特點是輸出(chu)量(liang)隨輸入(ru)量(liang)的(de)變化而(er)變化,輸出(chu)量(liang)與輸入(ru)量(liang)之(zhi)間存在(zai)一定的(de)比例(li)關(guan)系(xi)。比例(li)控(kong)(kong)(kong)(kong)制(zhi)(zhi)有(you)開(kai)(kai)環(huan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)和(he)閉環(huan)控(kong)(kong)(kong)(kong)制(zhi)(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 |