意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)(qu)動(dong)裝(zhuang)置不同。比例閥的驅(qu)(qu)動(dong)裝(zhuang)置是比例電磁鐵；伺服閥的驅(qu)(qu)動(dong)裝(zhuang)置是力馬(ma)(ma)達或力矩(ju)馬(ma)(ma)達； 2.性能參數不同。滯環(huan)、中位(wei)死區、頻(pin)寬、過濾精度等特性不同，因此應(ying)用(yong)(yong)場合不同，伺(si)服(fu)閥(fa)和(he)伺(si)服(fu)比例閥(fa)主(zhu)要應(ying)用(yong)(yong)在閉環(huan)控(kong)制系(xi)統(tong)(tong)，其它結構的比例閥(fa)主(zhu)要應(ying)用(yong)(yong)在開(kai)環(huan)控(kong)系(xi)統(tong)(tong)及(ji)閉環(huan)速度控(kong)制系(xi)統(tong)(tong)； - 伺服閥中位沒有死區，比例(li)閥有中位死區；
- 伺服(fu)閥(fa)(fa)的頻響（響應頻率(lv)）更高(gao)，可以(yi)高(gao)達200Hz左右(you)，比例閥(fa)(fa)一(yi)般zui高(gao)幾十Hz；
- 伺服閥對液(ye)(ye)壓油液(ye)(ye)的(de)要求更高，需要精過濾才行，否則容(rong)易堵塞，比(bi)例(li)閥要求低(di)一些；
3.閥(fa)(fa)芯結(jie)(jie)構及(ji)加工精(jing)度不同。比例(li)閥(fa)(fa)采(cai)用(yong)閥(fa)(fa)芯+閥(fa)(fa)體(ti)結(jie)(jie)構，閥(fa)(fa)體(ti)兼作閥(fa)(fa)套。伺服閥(fa)(fa)和伺服比例(li)閥(fa)(fa)采(cai)用(yong)閥(fa)(fa)芯+閥(fa)(fa)套的(de)結(jie)(jie)構。 4.中(zhong)位機能種(zhong)類(lei)不同。比例換向閥具有與普通(tong)換向閥相(xiang)似的中(zhong)位機能，而伺服(fu)閥中(zhong)位機能只(zhi)有O型（Rexroth產品的E型）。 5.閥(fa)的額定(ding)壓降不同(tong)。 電(dian)氣(qi)比(bi)例(li)閥自動(dong)(dong)控(kong)(kong)制(zhi)(zhi)可分成斷續控(kong)(kong)制(zhi)(zhi)和連續控(kong)(kong)制(zhi)(zhi)。斷續控(kong)(kong)制(zhi)(zhi)即(ji)開(kai)關控(kong)(kong)制(zhi)(zhi)。氣(qi)動(dong)(dong)控(kong)(kong)制(zhi)(zhi)系統中使用(yong)動(dong)(dong)作頻率(lv)較低的開(kai)關式(ON-OFF)的換(huan)(huan)向閥來控(kong)(kong)制(zhi)(zhi)氣(qi)路的通斷。靠(kao)減(jian)壓閥來調(diao)節(jie)所(suo)需(xu)要(yao)的壓力，靠(kao)節(jie)流(liu)閥來調(diao)節(jie)所(suo)需(xu)要(yao)的流(liu)量(liang)(liang)。這種傳統的氣(qi)動(dong)(dong)控(kong)(kong)制(zhi)(zhi)系統要(yao)想(xiang)要(yao)有(you)多(duo)(duo)個輸出力和多(duo)(duo)個運動(dong)(dong)速度(du)，就需(xu)要(yao)多(duo)(duo)個減(jian)壓閥、節(jie)流(liu)閥及換(huan)(huan)向閥。這樣，不僅元(yuan)件需(xu)要(yao)多(duo)(duo)，成本高，構成系統復雜(za)，且許(xu)多(duo)(duo)元(yuan)件都需(xu)要(yao)預先進(jin)行人(ren)工調(diao)節(jie)。電(dian)氣(qi)比(bi)例(li)閥控(kong)(kong)制(zhi)(zhi)屬(shu)于連續控(kong)(kong)制(zhi)(zhi)，其特點是輸出量(liang)(liang)隨輸入(ru)量(liang)(liang)的變化而變化，輸出量(liang)(liang)與輸入(ru)量(liang)(liang)之間存(cun)在一定的比(bi)例(li)關系。比(bi)例(li)控(kong)(kong)制(zhi)(zhi)有(you)開(kai)環控(kong)(kong)制(zhi)(zhi)和閉(bi)環控(kong)(kong)制(zhi)(zhi)之分。 意大利ATOS比例閥型(xing)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? |
