意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)(qu)動(dong)裝(zhuang)(zhuang)置不同。比例閥的驅(qu)(qu)動(dong)裝(zhuang)(zhuang)置是比例電磁鐵；伺(si)服(fu)閥的驅(qu)(qu)動(dong)裝(zhuang)(zhuang)置是力馬(ma)達或(huo)力矩(ju)馬(ma)達； 2.性能參數不同(tong)。滯(zhi)環、中位(wei)死(si)區、頻寬、過濾(lv)精度(du)(du)等特性不同(tong)，因此(ci)應(ying)用場合不同(tong)，伺服閥和(he)伺服比例閥主(zhu)要(yao)應(ying)用在(zai)閉環控(kong)制系(xi)統，其它結(jie)構的比例閥主(zhu)要(yao)應(ying)用在(zai)開環控(kong)系(xi)統及閉環速度(du)(du)控(kong)制系(xi)統； - 伺服閥中(zhong)位(wei)沒有(you)死(si)區(qu)，比例閥有(you)中(zhong)位(wei)死(si)區(qu)；
- 伺服閥(fa)的頻(pin)響（響應(ying)頻(pin)率）更高，可以高達200Hz左右，比例閥(fa)一般zui高幾(ji)十Hz；
- 伺服閥對(dui)液壓(ya)油液的要(yao)求更高，需要(yao)精過(guo)濾才(cai)行，否則容易堵塞(sai)，比(bi)例閥要(yao)求低一些；
3.閥(fa)(fa)(fa)芯(xin)結構(gou)(gou)及加工(gong)精度不(bu)同。比例閥(fa)(fa)(fa)采用閥(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)體(ti)結構(gou)(gou)，閥(fa)(fa)(fa)體(ti)兼作閥(fa)(fa)(fa)套。伺服閥(fa)(fa)(fa)和(he)伺服比例閥(fa)(fa)(fa)采用閥(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)套的結構(gou)(gou)。 4.中位機能種(zhong)類不同。比例(li)換向閥具有與(yu)普通(tong)換向閥相似的中位機能，而伺(si)服閥中位機能只有O型（Rexroth產(chan)品的E型）。 5.閥的額定壓降不同。 電氣(qi)(qi)(qi)比例(li)閥(fa)自(zi)動(dong)(dong)控(kong)(kong)(kong)(kong)制可(ke)分成斷續控(kong)(kong)(kong)(kong)制和連(lian)續控(kong)(kong)(kong)(kong)制。斷續控(kong)(kong)(kong)(kong)制即(ji)開(kai)(kai)關(guan)控(kong)(kong)(kong)(kong)制。氣(qi)(qi)(qi)動(dong)(dong)控(kong)(kong)(kong)(kong)制系統中使(shi)用動(dong)(dong)作頻率較低(di)的開(kai)(kai)關(guan)式(ON-OFF)的換向閥(fa)來控(kong)(kong)(kong)(kong)制氣(qi)(qi)(qi)路(lu)的通斷。靠(kao)(kao)減壓閥(fa)來調節(jie)所(suo)需要(yao)的壓力(li)，靠(kao)(kao)節(jie)流閥(fa)來調節(jie)所(suo)需要(yao)的流量(liang)。這(zhe)種傳統的氣(qi)(qi)(qi)動(dong)(dong)控(kong)(kong)(kong)(kong)制系統要(yao)想要(yao)有多(duo)個(ge)輸(shu)出力(li)和多(duo)個(ge)運動(dong)(dong)速度(du)，就需要(yao)多(duo)個(ge)減壓閥(fa)、節(jie)流閥(fa)及(ji)換向閥(fa)。這(zhe)樣(yang)，不(bu)僅元(yuan)件需要(yao)多(duo)，成本高，構成系統復雜，且許多(duo)元(yuan)件都(dou)需要(yao)預先進行(xing)人工調節(jie)。電氣(qi)(qi)(qi)比例(li)閥(fa)控(kong)(kong)(kong)(kong)制屬于連(lian)續控(kong)(kong)(kong)(kong)制，其特點是輸(shu)出量(liang)隨輸(shu)入(ru)量(liang)的變化(hua)而變化(hua)，輸(shu)出量(liang)與輸(shu)入(ru)量(liang)之間存在(zai)一定的比例(li)關(guan)系。比例(li)控(kong)(kong)(kong)(kong)制有開(kai)(kai)環(huan)控(kong)(kong)(kong)(kong)制和閉環(huan)控(kong)(kong)(kong)(kong)制之分。 意大利ATOS比例閥型(xing)號表： LIMZA-A-1/180/M 20
LIMZA-A-3/180/M 40
LIMZO-A-3/210
LIMZO-A-4/210
LIMZO-A-5/315/P 30
LIMZO-AE-4/315 10
LIMZO-TER-4/210 50
LIMZO-TER-4/210/I
LIQV-2 20
LIQV-2/K
LIQZO-A-252S4
LIQZO-L-252L4 50
LIQZO-L-322L4 50
LIQZO-LE-402L4 50
LIQZO-LE-502L4 50
LIQZO-LE-632L4 51
LIQZO-T-252L4
LIQZO-T-252L4 50 /PE
LIQZO-T-322L4 50
LIQZO-T-402L4
LIQZO-TE-322L4 50
LIRA-1/100 20
LIRA-1/210 20
LIRA-2/210/V 20
LIRA-3/100
LIRA-4/210/V 11
LIRZO-A-1/210
QVHZO-A-06/12 20
QVHZO-A-06/18
QVHZO-A-06/3
QVHZO-A-06/36
QVHZO-A-06/45
QVHZO-AE-06/3/I 10
QVHZO-AE-06/45/I
QVHZO-T-06/12 31
QVHZO-T-06/3 31/WG
QVHZO-TE-06/18 40
QVHZO-TE-06/18/I 40
QVHZO-TE-06/3 40
QVKMZOR-A-10/90/210/18
QVKZOR-A-10/65
QVKZOR-AE-10/90 10
QVKZOR-AES-BC-10/65 10? |
