意大利ATOS比例閥主要體現在以下幾點: 1.驅動(dong)(dong)裝置不同。比例(li)(li)閥的(de)驅動(dong)(dong)裝置是比例(li)(li)電磁(ci)鐵;伺服閥的(de)驅動(dong)(dong)裝置是力(li)(li)馬達(da)或力(li)(li)矩(ju)馬達(da); 2.性(xing)能參數不同。滯環、中位死區、頻(pin)寬、過濾精(jing)度等特性(xing)不同,因此應用(yong)場(chang)合不同,伺(si)服閥(fa)和伺(si)服比例閥(fa)主(zhu)(zhu)要應用(yong)在閉環控(kong)制系(xi)統,其它結構的比例閥(fa)主(zhu)(zhu)要應用(yong)在開環控(kong)系(xi)統及閉環速度控(kong)制系(xi)統; - 伺(si)服閥(fa)中位(wei)沒(mei)有死區,比例閥(fa)有中位(wei)死區;
- 伺服閥的頻響(響應頻率)更高(gao),可(ke)以高(gao)達(da)200Hz左右,比例(li)閥一(yi)般(ban)zui高(gao)幾十Hz;
- 伺服(fu)閥對液壓油液的要(yao)求(qiu)更高,需要(yao)精過濾才行,否則容易堵(du)塞,比(bi)例閥要(yao)求(qiu)低(di)一些;
3.閥(fa)(fa)(fa)(fa)(fa)芯結構(gou)及加工精度不(bu)同。比例(li)閥(fa)(fa)(fa)(fa)(fa)采(cai)用(yong)閥(fa)(fa)(fa)(fa)(fa)芯+閥(fa)(fa)(fa)(fa)(fa)體結構(gou),閥(fa)(fa)(fa)(fa)(fa)體兼作閥(fa)(fa)(fa)(fa)(fa)套(tao)。伺服(fu)閥(fa)(fa)(fa)(fa)(fa)和伺服(fu)比例(li)閥(fa)(fa)(fa)(fa)(fa)采(cai)用(yong)閥(fa)(fa)(fa)(fa)(fa)芯+閥(fa)(fa)(fa)(fa)(fa)套(tao)的結構(gou)。 4.中(zhong)位(wei)機能(neng)種類不(bu)同。比例換向閥具有(you)與普(pu)通換向閥相(xiang)似的(de)中(zhong)位(wei)機能(neng),而伺服(fu)閥中(zhong)位(wei)機能(neng)只有(you)O型(Rexroth產品的(de)E型)。 5.閥(fa)的額定壓降(jiang)不(bu)同。 電(dian)氣比例閥(fa)(fa)(fa)自動(dong)(dong)(dong)控(kong)(kong)制(zhi)可分(fen)成(cheng)斷(duan)續(xu)控(kong)(kong)制(zhi)和連續(xu)控(kong)(kong)制(zhi)。斷(duan)續(xu)控(kong)(kong)制(zhi)即開關(guan)控(kong)(kong)制(zhi)。氣動(dong)(dong)(dong)控(kong)(kong)制(zhi)系統(tong)(tong)中(zhong)使(shi)用動(dong)(dong)(dong)作頻(pin)率較低的(de)(de)(de)開關(guan)式(shi)(ON-OFF)的(de)(de)(de)換向閥(fa)(fa)(fa)來(lai)控(kong)(kong)制(zhi)氣路的(de)(de)(de)通(tong)斷(duan)。靠(kao)減壓閥(fa)(fa)(fa)來(lai)調(diao)節(jie)所(suo)需(xu)要(yao)的(de)(de)(de)壓力,靠(kao)節(jie)流閥(fa)(fa)(fa)來(lai)調(diao)節(jie)所(suo)需(xu)要(yao)的(de)(de)(de)流量。這種傳統(tong)(tong)的(de)(de)(de)氣動(dong)(dong)(dong)控(kong)(kong)制(zhi)系統(tong)(tong)要(yao)想要(yao)有(you)多個輸出(chu)力和多個運(yun)動(dong)(dong)(dong)速(su)度,就需(xu)要(yao)多個減壓閥(fa)(fa)(fa)、節(jie)流閥(fa)(fa)(fa)及換向閥(fa)(fa)(fa)。這樣(yang),不(bu)僅(jin)元件需(xu)要(yao)多,成(cheng)本高,構成(cheng)系統(tong)(tong)復雜,且許多元件都需(xu)要(yao)預先進(jin)行人工調(diao)節(jie)。電(dian)氣比例閥(fa)(fa)(fa)控(kong)(kong)制(zhi)屬于連續(xu)控(kong)(kong)制(zhi),其特(te)點是輸出(chu)量隨輸入量的(de)(de)(de)變化而變化,輸出(chu)量與輸入量之間存在一(yi)定的(de)(de)(de)比例關(guan)系。比例控(kong)(kong)制(zhi)有(you)開環控(kong)(kong)制(zhi)和閉(bi)環控(kong)(kong)制(zhi)之分(fen)。 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? |