意大利ATOS比例閥主要體現在以下幾點： 1.驅動裝置不同。比例閥(fa)的驅動裝置是(shi)比例電磁鐵；伺服閥(fa)的驅動裝置是(shi)力馬達(da)或(huo)力矩馬達(da)； 2.性能參數不同(tong)。滯(zhi)環(huan)、中位死(si)區(qu)、頻寬、過濾精度等特(te)性不同(tong)，因此(ci)應用(yong)(yong)場合不同(tong)，伺(si)服閥和(he)伺(si)服比(bi)例閥主(zhu)要應用(yong)(yong)在閉環(huan)控(kong)(kong)制系(xi)統(tong)，其它(ta)結(jie)構(gou)的比(bi)例閥主(zhu)要應用(yong)(yong)在開環(huan)控(kong)(kong)系(xi)統(tong)及閉環(huan)速度控(kong)(kong)制系(xi)統(tong)； - 伺(si)服(fu)閥中(zhong)位(wei)沒有死區，比例閥有中(zhong)位(wei)死區；
- 伺服(fu)閥(fa)的(de)頻響（響應頻率）更高(gao)，可以(yi)高(gao)達200Hz左右，比(bi)例閥(fa)一般zui高(gao)幾(ji)十Hz；
- 伺服閥(fa)對液壓油液的要(yao)求更高，需要(yao)精過濾才行，否則容易(yi)堵塞，比例(li)閥(fa)要(yao)求低一些；
3.閥(fa)芯結(jie)構(gou)及加工精(jing)度不(bu)同。比例(li)閥(fa)采用閥(fa)芯+閥(fa)體結(jie)構(gou)，閥(fa)體兼作閥(fa)套。伺服(fu)閥(fa)和伺服(fu)比例(li)閥(fa)采用閥(fa)芯+閥(fa)套的結(jie)構(gou)。 4.中(zhong)(zhong)位(wei)機能種類不同。比例換向閥具有(you)與普通(tong)換向閥相似的中(zhong)(zhong)位(wei)機能，而伺服閥中(zhong)(zhong)位(wei)機能只有(you)O型(xing)（Rexroth產品的E型(xing)）。 5.閥的額(e)定壓(ya)降(jiang)不同。 電(dian)氣(qi)(qi)比(bi)(bi)(bi)例(li)(li)閥(fa)(fa)(fa)自動(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)可(ke)分成斷續(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)和(he)連(lian)續(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)即開關(guan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)。氣(qi)(qi)動(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)系(xi)統(tong)中使用(yong)動(dong)作頻率(lv)較低的開關(guan)式(ON-OFF)的換向閥(fa)(fa)(fa)來控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)氣(qi)(qi)路的通斷。靠(kao)減壓(ya)閥(fa)(fa)(fa)來調節(jie)(jie)(jie)所(suo)需要(yao)(yao)(yao)的壓(ya)力，靠(kao)節(jie)(jie)(jie)流閥(fa)(fa)(fa)來調節(jie)(jie)(jie)所(suo)需要(yao)(yao)(yao)的流量。這種傳統(tong)的氣(qi)(qi)動(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)系(xi)統(tong)要(yao)(yao)(yao)想要(yao)(yao)(yao)有(you)多(duo)個(ge)輸(shu)出力和(he)多(duo)個(ge)運動(dong)速度，就需要(yao)(yao)(yao)多(duo)個(ge)減壓(ya)閥(fa)(fa)(fa)、節(jie)(jie)(jie)流閥(fa)(fa)(fa)及換向閥(fa)(fa)(fa)。這樣(yang)，不(bu)僅元(yuan)件(jian)(jian)需要(yao)(yao)(yao)多(duo)，成本高，構成系(xi)統(tong)復雜，且許多(duo)元(yuan)件(jian)(jian)都需要(yao)(yao)(yao)預(yu)先進行人工調節(jie)(jie)(jie)。電(dian)氣(qi)(qi)比(bi)(bi)(bi)例(li)(li)閥(fa)(fa)(fa)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)屬于連(lian)續(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)，其特點是輸(shu)出量隨輸(shu)入(ru)量的變化(hua)而(er)變化(hua)，輸(shu)出量與輸(shu)入(ru)量之(zhi)間存在(zai)一定的比(bi)(bi)(bi)例(li)(li)關(guan)系(xi)。比(bi)(bi)(bi)例(li)(li)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)有(you)開環控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)和(he)閉環控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)之(zhi)分。 意大利ATOS比例閥型號表： 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? |
