意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)動裝(zhuang)置(zhi)不同。比例閥(fa)的驅(qu)動裝(zhuang)置(zhi)是比例電磁鐵(tie)；伺服(fu)閥(fa)的驅(qu)動裝(zhuang)置(zhi)是力(li)馬達(da)或(huo)力(li)矩馬達(da)； 2.性(xing)能參(can)數(shu)不同。滯環(huan)、中位(wei)死區、頻(pin)寬、過濾精度等特性(xing)不同，因此(ci)應(ying)(ying)(ying)用(yong)場(chang)合不同，伺服閥(fa)和(he)伺服比例閥(fa)主要應(ying)(ying)(ying)用(yong)在閉(bi)(bi)環(huan)控制系統，其(qi)它結構(gou)的比例閥(fa)主要應(ying)(ying)(ying)用(yong)在開環(huan)控系統及閉(bi)(bi)環(huan)速度控制系統； - 伺服閥中位(wei)沒(mei)有死區，比(bi)例(li)閥有中位(wei)死區；
- 伺服閥的(de)頻響（響應頻率(lv)）更高(gao)，可以高(gao)達200Hz左右，比例閥一般zui高(gao)幾(ji)十Hz；
- 伺服閥對液壓油液的要(yao)(yao)求(qiu)更高，需要(yao)(yao)精過濾才行(xing)，否則容(rong)易堵塞，比(bi)例閥要(yao)(yao)求(qiu)低一些；
3.閥(fa)芯結(jie)構(gou)及加工精度不同。比例閥(fa)采用閥(fa)芯+閥(fa)體結(jie)構(gou)，閥(fa)體兼作閥(fa)套(tao)。伺服閥(fa)和(he)伺服比例閥(fa)采用閥(fa)芯+閥(fa)套(tao)的結(jie)構(gou)。 ; 4.中位(wei)機(ji)能種類不(bu)同。比例換向(xiang)閥具有與普通換向(xiang)閥相似的中位(wei)機(ji)能，而伺(si)服閥中位(wei)機(ji)能只(zhi)有O型（Rexroth產品的E型）。 5.閥的額定壓降不同。 電氣比(bi)例(li)閥自動(dong)(dong)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)可分成(cheng)(cheng)斷(duan)續控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和連(lian)續控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。斷(duan)續控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)即開關控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。氣動(dong)(dong)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系(xi)統(tong)中使用動(dong)(dong)作頻率較低的(de)(de)(de)開關式(ON-OFF)的(de)(de)(de)換向閥來(lai)(lai)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)氣路的(de)(de)(de)通斷(duan)。靠(kao)(kao)減(jian)壓(ya)閥來(lai)(lai)調節所需(xu)(xu)要(yao)的(de)(de)(de)壓(ya)力，靠(kao)(kao)節流閥來(lai)(lai)調節所需(xu)(xu)要(yao)的(de)(de)(de)流量。這種(zhong)傳統(tong)的(de)(de)(de)氣動(dong)(dong)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系(xi)統(tong)要(yao)想要(yao)有(you)多(duo)個(ge)(ge)輸(shu)(shu)出力和多(duo)個(ge)(ge)運動(dong)(dong)速度，就需(xu)(xu)要(yao)多(duo)個(ge)(ge)減(jian)壓(ya)閥、節流閥及換向閥。這樣，不僅元件需(xu)(xu)要(yao)多(duo)，成(cheng)(cheng)本高，構成(cheng)(cheng)系(xi)統(tong)復(fu)雜，且(qie)許多(duo)元件都需(xu)(xu)要(yao)預先進行人工調節。電氣比(bi)例(li)閥控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)屬(shu)于連(lian)續控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)，其特點是輸(shu)(shu)出量隨輸(shu)(shu)入量的(de)(de)(de)變化而變化，輸(shu)(shu)出量與輸(shu)(shu)入量之間存在一(yi)定(ding)的(de)(de)(de)比(bi)例(li)關系(xi)。比(bi)例(li)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)有(you)開環控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和閉環控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)之分。 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? |
