意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)動(dong)(dong)裝(zhuang)置(zhi)不同。比(bi)例(li)閥的驅(qu)動(dong)(dong)裝(zhuang)置(zhi)是(shi)比(bi)例(li)電磁鐵(tie)；伺服閥的驅(qu)動(dong)(dong)裝(zhuang)置(zhi)是(shi)力(li)馬達或力(li)矩馬達； 2.性能(neng)參數不(bu)同(tong)。滯環(huan)、中位死(si)區(qu)、頻寬、過(guo)濾精度(du)等特性不(bu)同(tong)，因此應用(yong)場(chang)合不(bu)同(tong)，伺(si)服閥和伺(si)服比例閥主(zhu)要應用(yong)在(zai)(zai)閉環(huan)控(kong)(kong)制(zhi)系(xi)統(tong)(tong)，其它結構的比例閥主(zhu)要應用(yong)在(zai)(zai)開環(huan)控(kong)(kong)系(xi)統(tong)(tong)及閉環(huan)速(su)度(du)控(kong)(kong)制(zhi)系(xi)統(tong)(tong)； - 伺服閥(fa)中位沒有死區，比例閥(fa)有中位死區；
- 伺服閥的(de)頻響（響應頻率）更高(gao)，可以高(gao)達200Hz左右，比例閥一般zui高(gao)幾十(shi)Hz；
- 伺服閥對液(ye)壓油液(ye)的要(yao)求更高，需要(yao)精過濾才行(xing)，否則容(rong)易堵塞，比例(li)閥要(yao)求低(di)一些；
3.閥(fa)(fa)芯(xin)結構及加工精度不同。比(bi)例(li)(li)閥(fa)(fa)采(cai)用閥(fa)(fa)芯(xin)+閥(fa)(fa)體結構，閥(fa)(fa)體兼作閥(fa)(fa)套。伺服(fu)閥(fa)(fa)和伺服(fu)比(bi)例(li)(li)閥(fa)(fa)采(cai)用閥(fa)(fa)芯(xin)+閥(fa)(fa)套的結構。 4.中(zhong)位(wei)機能(neng)種類不(bu)同。比例換向閥(fa)具有與普通換向閥(fa)相似的中(zhong)位(wei)機能(neng)，而伺服閥(fa)中(zhong)位(wei)機能(neng)只有O型（Rexroth產品(pin)的E型）。 5.閥(fa)的額定壓降不同。 電(dian)氣(qi)(qi)比(bi)(bi)例(li)(li)閥(fa)(fa)自動(dong)(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)可分(fen)成斷(duan)(duan)續控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和(he)連續控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。斷(duan)(duan)續控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)即開(kai)關(guan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。氣(qi)(qi)動(dong)(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系(xi)統(tong)(tong)中使用(yong)動(dong)(dong)作頻率較低的(de)(de)開(kai)關(guan)式(ON-OFF)的(de)(de)換(huan)向(xiang)(xiang)閥(fa)(fa)來控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)氣(qi)(qi)路的(de)(de)通斷(duan)(duan)。靠(kao)減壓(ya)閥(fa)(fa)來調節(jie)(jie)所需(xu)(xu)要(yao)的(de)(de)壓(ya)力，靠(kao)節(jie)(jie)流閥(fa)(fa)來調節(jie)(jie)所需(xu)(xu)要(yao)的(de)(de)流量。這種傳(chuan)統(tong)(tong)的(de)(de)氣(qi)(qi)動(dong)(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系(xi)統(tong)(tong)要(yao)想要(yao)有(you)多(duo)(duo)(duo)(duo)個輸(shu)出(chu)力和(he)多(duo)(duo)(duo)(duo)個運動(dong)(dong)速度，就需(xu)(xu)要(yao)多(duo)(duo)(duo)(duo)個減壓(ya)閥(fa)(fa)、節(jie)(jie)流閥(fa)(fa)及(ji)換(huan)向(xiang)(xiang)閥(fa)(fa)。這樣，不僅元(yuan)件需(xu)(xu)要(yao)多(duo)(duo)(duo)(duo)，成本高(gao)，構成系(xi)統(tong)(tong)復雜，且(qie)許多(duo)(duo)(duo)(duo)元(yuan)件都需(xu)(xu)要(yao)預先(xian)進行人工調節(jie)(jie)。電(dian)氣(qi)(qi)比(bi)(bi)例(li)(li)閥(fa)(fa)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)屬(shu)于連續控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)，其特點(dian)是輸(shu)出(chu)量隨輸(shu)入量的(de)(de)變(bian)化而變(bian)化，輸(shu)出(chu)量與(yu)輸(shu)入量之間存在一定的(de)(de)比(bi)(bi)例(li)(li)關(guan)系(xi)。比(bi)(bi)例(li)(li)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)有(you)開(kai)環(huan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和(he)閉環(huan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)之分(fen)。 意大利ATOS比例閥型(xing)號(hao)表： LEQZO-A-162S4
LEQZO-A-252L4
LEQZO-A-252S4
LIQZO-LE-252L4
LIQZO-LE-253L4
LIQZO-LE-253L4/Q
LIQZO-LE-322L4
LIQZO-LE-322L4/F
LIQZO-LE-322L4/Q
LIQZO-LE-402L4
LIQZO-LE-403-L4
LIQZO-LE-403-L4/Q
LIQZO-LE-502L4
LIQZO-LE-503L4
LIQZO-LE-632L4
LIQZO-LE-632L4/Q
LIQZO-LE-633L4
LIQZO-LE-803-L4
LIQZO-LE-803-L4/F
LIQZO-LES-BP-502L4/Z
LIQZO-LES-PS-162L4
LIQZO-LES-PS-162L4/Z
LIQZO-T-402L4
LIQZO-T-502L4
LIQZO-TE-162L4
LIQZO-TE-252L4
LIQZO-TE-252L4/I
LIQZO-TE-322L4
LIQZO-TE-322L4/F
LIQZO-TE-402L4
LIQZO-TE-502L4
LIQZO-TES-PS-162L4 |
