意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)動(dong)(dong)裝置(zhi)不(bu)同。比例(li)閥(fa)的(de)驅(qu)動(dong)(dong)裝置(zhi)是(shi)(shi)比例(li)電(dian)磁鐵(tie)；伺服閥(fa)的(de)驅(qu)動(dong)(dong)裝置(zhi)是(shi)(shi)力馬(ma)達或力矩馬(ma)達； 2.性能參數不(bu)同(tong)(tong)。滯(zhi)環(huan)、中位(wei)死區(qu)、頻寬、過濾精度等特性不(bu)同(tong)(tong)，因此(ci)應用(yong)場合不(bu)同(tong)(tong)，伺服(fu)(fu)閥和(he)伺服(fu)(fu)比例閥主(zhu)要應用(yong)在閉環(huan)控制(zhi)系統(tong)，其它結構(gou)的(de)比例閥主(zhu)要應用(yong)在開環(huan)控系統(tong)及閉環(huan)速(su)度控制(zhi)系統(tong)； - 伺(si)服閥(fa)中(zhong)位沒有(you)死區(qu)，比例閥(fa)有(you)中(zhong)位死區(qu)；
- 伺服閥的(de)頻響（響應頻率）更高，可以高達200Hz左(zuo)右，比例閥一般zui高幾(ji)十Hz；
- 伺服閥(fa)對液壓油(you)液的要求(qiu)更高(gao)，需(xu)要精(jing)過濾才(cai)行，否則容易堵(du)塞，比(bi)例閥(fa)要求(qiu)低一些；
3.閥(fa)(fa)(fa)(fa)(fa)芯結(jie)構及加工精度不同。比例閥(fa)(fa)(fa)(fa)(fa)采(cai)用(yong)閥(fa)(fa)(fa)(fa)(fa)芯+閥(fa)(fa)(fa)(fa)(fa)體(ti)結(jie)構，閥(fa)(fa)(fa)(fa)(fa)體(ti)兼作(zuo)閥(fa)(fa)(fa)(fa)(fa)套。伺服閥(fa)(fa)(fa)(fa)(fa)和伺服比例閥(fa)(fa)(fa)(fa)(fa)采(cai)用(yong)閥(fa)(fa)(fa)(fa)(fa)芯+閥(fa)(fa)(fa)(fa)(fa)套的(de)結(jie)構。 4.中位機能(neng)(neng)種類不同。比例換向閥具有與(yu)普通換向閥相(xiang)似的(de)中位機能(neng)(neng)，而伺服閥中位機能(neng)(neng)只有O型(xing)（Rexroth產品的(de)E型(xing)）。 5.閥(fa)的(de)額定壓降不(bu)同(tong)。 電(dian)氣(qi)比例閥(fa)自動(dong)(dong)(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)可分成斷(duan)(duan)續(xu)(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)和(he)(he)連(lian)續(xu)(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)。斷(duan)(duan)續(xu)(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)即開(kai)關(guan)控(kong)(kong)(kong)(kong)(kong)制(zhi)。氣(qi)動(dong)(dong)(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)系統(tong)中使用動(dong)(dong)(dong)作頻(pin)率(lv)較(jiao)低的(de)(de)(de)(de)開(kai)關(guan)式(ON-OFF)的(de)(de)(de)(de)換向閥(fa)來控(kong)(kong)(kong)(kong)(kong)制(zhi)氣(qi)路的(de)(de)(de)(de)通(tong)斷(duan)(duan)。靠減壓(ya)閥(fa)來調(diao)節(jie)(jie)所需要(yao)(yao)(yao)的(de)(de)(de)(de)壓(ya)力，靠節(jie)(jie)流閥(fa)來調(diao)節(jie)(jie)所需要(yao)(yao)(yao)的(de)(de)(de)(de)流量(liang)(liang)(liang)。這種(zhong)傳統(tong)的(de)(de)(de)(de)氣(qi)動(dong)(dong)(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)系統(tong)要(yao)(yao)(yao)想要(yao)(yao)(yao)有多(duo)(duo)(duo)個輸(shu)(shu)(shu)出力和(he)(he)多(duo)(duo)(duo)個運(yun)動(dong)(dong)(dong)速度，就需要(yao)(yao)(yao)多(duo)(duo)(duo)個減壓(ya)閥(fa)、節(jie)(jie)流閥(fa)及換向閥(fa)。這樣，不僅(jin)元件需要(yao)(yao)(yao)多(duo)(duo)(duo)，成本高(gao)，構成系統(tong)復雜(za)，且(qie)許(xu)多(duo)(duo)(duo)元件都需要(yao)(yao)(yao)預先進(jin)行人工調(diao)節(jie)(jie)。電(dian)氣(qi)比例閥(fa)控(kong)(kong)(kong)(kong)(kong)制(zhi)屬于連(lian)續(xu)(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)，其特(te)點是輸(shu)(shu)(shu)出量(liang)(liang)(liang)隨(sui)輸(shu)(shu)(shu)入(ru)(ru)量(liang)(liang)(liang)的(de)(de)(de)(de)變化(hua)而變化(hua)，輸(shu)(shu)(shu)出量(liang)(liang)(liang)與輸(shu)(shu)(shu)入(ru)(ru)量(liang)(liang)(liang)之間存在一定的(de)(de)(de)(de)比例關(guan)系。比例控(kong)(kong)(kong)(kong)(kong)制(zhi)有開(kai)環控(kong)(kong)(kong)(kong)(kong)制(zhi)和(he)(he)閉環控(kong)(kong)(kong)(kong)(kong)制(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? |
