意大利ATOS比例閥主要體現在以下幾點： 1.驅動裝(zhuang)置不同(tong)。比例閥(fa)(fa)的(de)驅動裝(zhuang)置是比例電(dian)磁鐵；伺服閥(fa)(fa)的(de)驅動裝(zhuang)置是力(li)馬(ma)達或(huo)力(li)矩馬(ma)達； 2.性(xing)能參數不同(tong)。滯環(huan)(huan)、中(zhong)位死區、頻寬、過(guo)濾(lv)精度(du)(du)等特性(xing)不同(tong)，因此(ci)應用(yong)場(chang)合不同(tong)，伺服閥和伺服比(bi)例(li)閥主(zhu)要應用(yong)在閉環(huan)(huan)控制(zhi)(zhi)系統，其(qi)它(ta)結構(gou)的比(bi)例(li)閥主(zhu)要應用(yong)在開(kai)環(huan)(huan)控系統及閉環(huan)(huan)速度(du)(du)控制(zhi)(zhi)系統； - 伺服(fu)閥中位沒有(you)死區，比例閥有(you)中位死區；
- 伺服(fu)閥的頻響(xiang)（響(xiang)應頻率）更高(gao)(gao)，可以高(gao)(gao)達200Hz左右，比例閥一(yi)般zui高(gao)(gao)幾十Hz；
- 伺服閥對液壓(ya)油液的要(yao)(yao)(yao)求更高(gao)，需要(yao)(yao)(yao)精過濾才行，否(fou)則容(rong)易堵塞，比例閥要(yao)(yao)(yao)求低一些；
3.閥(fa)(fa)芯(xin)結(jie)(jie)(jie)構(gou)及加工精度不同。比例閥(fa)(fa)采(cai)用(yong)閥(fa)(fa)芯(xin)+閥(fa)(fa)體結(jie)(jie)(jie)構(gou)，閥(fa)(fa)體兼作(zuo)閥(fa)(fa)套(tao)。伺(si)服閥(fa)(fa)和伺(si)服比例閥(fa)(fa)采(cai)用(yong)閥(fa)(fa)芯(xin)+閥(fa)(fa)套(tao)的結(jie)(jie)(jie)構(gou)。 4.中(zhong)位(wei)機能種類不同。比例(li)換(huan)向(xiang)閥具有與普(pu)通換(huan)向(xiang)閥相似的中(zhong)位(wei)機能，而伺(si)服閥中(zhong)位(wei)機能只(zhi)有O型(xing)（Rexroth產品的E型(xing)）。 5.閥的額定(ding)壓降不同(tong)。 電氣比例(li)閥自(zi)動(dong)(dong)控(kong)(kong)(kong)制可分成(cheng)斷(duan)(duan)續控(kong)(kong)(kong)制和連續控(kong)(kong)(kong)制。斷(duan)(duan)續控(kong)(kong)(kong)制即開關控(kong)(kong)(kong)制。氣動(dong)(dong)控(kong)(kong)(kong)制系(xi)統(tong)中使用動(dong)(dong)作頻率(lv)較低的(de)(de)(de)開關式(shi)(ON-OFF)的(de)(de)(de)換向閥來(lai)(lai)控(kong)(kong)(kong)制氣路的(de)(de)(de)通斷(duan)(duan)。靠減(jian)(jian)壓閥來(lai)(lai)調(diao)節(jie)(jie)(jie)所需要(yao)的(de)(de)(de)壓力(li)，靠節(jie)(jie)(jie)流閥來(lai)(lai)調(diao)節(jie)(jie)(jie)所需要(yao)的(de)(de)(de)流量(liang)。這種傳(chuan)統(tong)的(de)(de)(de)氣動(dong)(dong)控(kong)(kong)(kong)制系(xi)統(tong)要(yao)想要(yao)有多個(ge)(ge)輸(shu)出力(li)和多個(ge)(ge)運動(dong)(dong)速(su)度(du)，就需要(yao)多個(ge)(ge)減(jian)(jian)壓閥、節(jie)(jie)(jie)流閥及換向閥。這樣，不僅元(yuan)件需要(yao)多，成(cheng)本高，構(gou)成(cheng)系(xi)統(tong)復雜，且許多元(yuan)件都需要(yao)預先進(jin)行人工(gong)調(diao)節(jie)(jie)(jie)。電氣比例(li)閥控(kong)(kong)(kong)制屬于連續控(kong)(kong)(kong)制，其特點是輸(shu)出量(liang)隨輸(shu)入量(liang)的(de)(de)(de)變(bian)化(hua)而變(bian)化(hua)，輸(shu)出量(liang)與輸(shu)入量(liang)之(zhi)間(jian)存在(zai)一定的(de)(de)(de)比例(li)關系(xi)。比例(li)控(kong)(kong)(kong)制有開環控(kong)(kong)(kong)制和閉環控(kong)(kong)(kong)制之(zhi)分。 意大利ATOS比例閥型號表(biao)： 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? |
