意大利阿托斯比例閥DHZO-T-071-S5 40/PE ATOS比(bi)例(li)閥主(zhu)要體現在以下幾點： 1.驅動裝置(zhi)不(bu)同。比(bi)例閥的驅動裝置(zhi)是比(bi)例電磁鐵；伺服閥的驅動裝置(zhi)是力馬(ma)達或力矩馬(ma)達； 2.性能參數不(bu)(bu)同(tong)(tong)。滯環(huan)(huan)(huan)、中位死區、頻寬(kuan)、過(guo)濾精度等(deng)特(te)性不(bu)(bu)同(tong)(tong)，因此應(ying)(ying)用場合(he)不(bu)(bu)同(tong)(tong)，伺(si)服閥和(he)伺(si)服比(bi)例閥主要應(ying)(ying)用在(zai)閉環(huan)(huan)(huan)控制(zhi)系(xi)統(tong)，其它結構(gou)的比(bi)例閥主要應(ying)(ying)用在(zai)開環(huan)(huan)(huan)控系(xi)統(tong)及閉環(huan)(huan)(huan)速度控制(zhi)系(xi)統(tong)； - 伺服閥中(zhong)位(wei)沒有死區，比(bi)例閥有中(zhong)位(wei)死區；
- 伺(si)服閥的頻響（響應頻率）更高(gao)，可以高(gao)達(da)200Hz左右，比(bi)例閥一般(ban)zui高(gao)幾十Hz；
- 伺服閥對液(ye)壓油(you)液(ye)的要(yao)求(qiu)更(geng)高，需(xu)要(yao)精過濾才(cai)行(xing)，否則容易(yi)堵塞(sai)，比例閥要(yao)求(qiu)低(di)一些；
3.閥(fa)(fa)芯(xin)結(jie)構及加工(gong)精度不同(tong)。比例(li)(li)閥(fa)(fa)采用(yong)閥(fa)(fa)芯(xin)+閥(fa)(fa)體結(jie)構，閥(fa)(fa)體兼作閥(fa)(fa)套。伺服(fu)閥(fa)(fa)和伺服(fu)比例(li)(li)閥(fa)(fa)采用(yong)閥(fa)(fa)芯(xin)+閥(fa)(fa)套的結(jie)構。 4.中位機能種(zhong)類不同。比例換(huan)向(xiang)閥具有與普通(tong)換(huan)向(xiang)閥相似的(de)中位機能，而(er)伺服閥中位機能只有O型(xing)(xing)（Rexroth產品(pin)的(de)E型(xing)(xing)）。 5.閥的額定壓降(jiang)不(bu)同。 電氣(qi)比(bi)(bi)例閥(fa)(fa)自(zi)動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)可分成(cheng)斷續控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和連續控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。斷續控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)即開關(guan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。氣(qi)動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系(xi)統中使用動(dong)(dong)作頻率較低(di)的(de)開關(guan)式(ON-OFF)的(de)換(huan)向(xiang)閥(fa)(fa)來控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)氣(qi)路的(de)通斷。靠(kao)減壓(ya)閥(fa)(fa)來調節所需要(yao)(yao)的(de)壓(ya)力，靠(kao)節流閥(fa)(fa)來調節所需要(yao)(yao)的(de)流量(liang)。這種傳統的(de)氣(qi)動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系(xi)統要(yao)(yao)想(xiang)要(yao)(yao)有多(duo)(duo)個(ge)輸(shu)(shu)出力和多(duo)(duo)個(ge)運動(dong)(dong)速度，就需要(yao)(yao)多(duo)(duo)個(ge)減壓(ya)閥(fa)(fa)、節流閥(fa)(fa)及換(huan)向(xiang)閥(fa)(fa)。這樣，不僅元件需要(yao)(yao)多(duo)(duo)，成(cheng)本高(gao)，構成(cheng)系(xi)統復(fu)雜，且(qie)許多(duo)(duo)元件都(dou)需要(yao)(yao)預先進行人工調節。電氣(qi)比(bi)(bi)例閥(fa)(fa)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)屬于連續控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)，其特(te)點是輸(shu)(shu)出量(liang)隨輸(shu)(shu)入(ru)量(liang)的(de)變化而變化，輸(shu)(shu)出量(liang)與輸(shu)(shu)入(ru)量(liang)之間存在一定的(de)比(bi)(bi)例關(guan)系(xi)。比(bi)(bi)例控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)有開環(huan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和閉環(huan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)之分。 ??意大利阿托斯比例閥DHZO型號： DHZO-ATE-073-P3/B/DP27SB 20
DHZO-T-051-L1
DHZO-T-051-L5 31
DHZO-T-071-D5
DHZO-T-071-L5
DHZO-T-071-S5
DHZO-TE-051-L5/Y 40
DHZO-TE-071-L5
DHZO-TE-071-S5 40 /PE
DHZO-TE-073-S5 |
