ATOS比例閥主要體現在以下幾點： 1.驅(qu)動(dong)裝(zhuang)置(zhi)不同。比例(li)閥(fa)的驅(qu)動(dong)裝(zhuang)置(zhi)是比例(li)電(dian)磁鐵；伺服閥(fa)的驅(qu)動(dong)裝(zhuang)置(zhi)是力馬達(da)(da)或(huo)力矩馬達(da)(da)； 2.性能參數不(bu)同(tong)。滯環、中(zhong)位死區、頻寬、過濾(lv)精度等特性不(bu)同(tong)，因此應(ying)(ying)用場(chang)合不(bu)同(tong)，伺服閥和伺服比例閥主要應(ying)(ying)用在(zai)閉環控(kong)制系統(tong)，其它結(jie)構的比例閥主要應(ying)(ying)用在(zai)開環控(kong)系統(tong)及閉環速度控(kong)制系統(tong)； - 伺服(fu)閥中(zhong)位沒有死區(qu)，比例閥有中(zhong)位死區(qu)；
- 伺服(fu)閥(fa)的頻(pin)響（響應頻(pin)率(lv)）更高，可以高達200Hz左(zuo)右，比(bi)例閥(fa)一般zui高幾(ji)十(shi)Hz；
- 伺服閥(fa)對液壓油液的要(yao)求(qiu)更(geng)高，需(xu)要(yao)精過(guo)濾才(cai)行，否則容易堵塞，比(bi)例(li)閥(fa)要(yao)求(qiu)低一些；
3.閥(fa)(fa)(fa)芯結構(gou)及加工精度不(bu)同。比(bi)例閥(fa)(fa)(fa)采用閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)體(ti)結構(gou)，閥(fa)(fa)(fa)體(ti)兼(jian)作閥(fa)(fa)(fa)套(tao)。伺(si)(si)服閥(fa)(fa)(fa)和伺(si)(si)服比(bi)例閥(fa)(fa)(fa)采用閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)套(tao)的結構(gou)。 4.中(zhong)位(wei)機能種類不同。比例換(huan)向閥(fa)具有與(yu)普通換(huan)向閥(fa)相似的中(zhong)位(wei)機能，而伺服閥(fa)中(zhong)位(wei)機能只有O型(xing)（Rexroth產品的E型(xing)）。 5.閥的額定(ding)壓降不同。 電(dian)(dian)氣(qi)(qi)比(bi)例閥(fa)自動(dong)(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)可分(fen)成(cheng)(cheng)斷續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)和連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)即(ji)開關控(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣(qi)(qi)動(dong)(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統中使用動(dong)(dong)作頻率(lv)較低(di)的(de)開關式(ON-OFF)的(de)換(huan)向閥(fa)來(lai)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣(qi)(qi)路的(de)通斷。靠減壓(ya)(ya)閥(fa)來(lai)調節(jie)所(suo)需(xu)要(yao)的(de)壓(ya)(ya)力，靠節(jie)流閥(fa)來(lai)調節(jie)所(suo)需(xu)要(yao)的(de)流量(liang)。這(zhe)種傳統的(de)氣(qi)(qi)動(dong)(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統要(yao)想(xiang)要(yao)有(you)多(duo)(duo)個(ge)(ge)輸(shu)出(chu)力和多(duo)(duo)個(ge)(ge)運動(dong)(dong)速度，就需(xu)要(yao)多(duo)(duo)個(ge)(ge)減壓(ya)(ya)閥(fa)、節(jie)流閥(fa)及換(huan)向閥(fa)。這(zhe)樣，不僅元(yuan)件(jian)需(xu)要(yao)多(duo)(duo)，成(cheng)(cheng)本高，構(gou)成(cheng)(cheng)系(xi)統復雜，且許多(duo)(duo)元(yuan)件(jian)都需(xu)要(yao)預先進行人(ren)工調節(jie)。電(dian)(dian)氣(qi)(qi)比(bi)例閥(fa)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬于連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)，其特點(dian)是輸(shu)出(chu)量(liang)隨(sui)輸(shu)入量(liang)的(de)變化而變化，輸(shu)出(chu)量(liang)與輸(shu)入量(liang)之(zhi)(zhi)間存在一(yi)定的(de)比(bi)例關系(xi)。比(bi)例控(kong)(kong)(kong)制(zhi)(zhi)(zhi)有(you)開環(huan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)和閉環(huan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)之(zhi)(zhi)分(fen)。 意大利ATOS比例閥型(xing)號表： 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
DKZA-A-173-L5/PA-M/7
DKZO-A-151-S5
DKZO-A-171-L5
DKZO-A-173-S5
DKZOR-A-151-S5
DKZOR-A-151-S5/18 40
DKZOR-A-151-S5/B
DKZOR-A-153-L5/B
DKZOR-A-171-D5 40
DKZOR-A-171-L5
DKZOR-A-171-S5
DKZOR-A-171-S5/18
DKZOR-A-173-D5
DKZOR-A-173-L5
DKZOR-A-173-L5/18 40
DKZOR-A-173-L5/Y
DKZOR-A-173-S3
DKZOR-A-173-S5
DKZOR-A-173-S5/18
DKZOR-AE-171-L5 10
DKZOR-AE-171-S5
DKZOR-AE-171-S5 10/WG
DKZOR-AE-171-S5/Y 10
DKZOR-AE-173-D5 10
DKZOR-AE-173-L5 10
DKZORC-A-151-S5/18
DKZOR-T-151-L5
DKZOR-T-151-L5/Y
DKZOR-T-153-L5
DKZOR-T-171-D5
DKZOR-T-171-L5
DKZOR-T-171-S5
DKZOR-T-171-S5/Y
DKZOR-T-173-L5 40
DKZOR-TE-170-L5 40
DKZOR-TE-171-L5
DKZOR-TE-171-L5/I 40
DKZOR-TE-171-S5
DKZOR-TE-171-S5/Y
DKZOR-TE-173-L5 40 |
