ATOS比例閥主要體現在以下幾點： 1.驅動裝置不同。比例閥(fa)的驅動裝置是比例電磁鐵；伺服閥(fa)的驅動裝置是力馬達(da)或力矩(ju)馬達(da)； 2.性能參數(shu)不(bu)同(tong)(tong)。滯(zhi)環、中(zhong)位死區、頻寬、過濾精度(du)等特性不(bu)同(tong)(tong)，因此應(ying)用場(chang)合(he)不(bu)同(tong)(tong)，伺服(fu)閥和伺服(fu)比例(li)閥主要(yao)應(ying)用在(zai)閉(bi)(bi)環控(kong)制系(xi)統(tong)，其它結構的比例(li)閥主要(yao)應(ying)用在(zai)開(kai)環控(kong)系(xi)統(tong)及(ji)閉(bi)(bi)環速度(du)控(kong)制系(xi)統(tong)； - 伺服閥中位沒(mei)有(you)死區，比例閥有(you)中位死區；
- 伺服閥(fa)的頻響(xiang)(xiang)（響(xiang)(xiang)應頻率(lv)）更高(gao)，可以高(gao)達200Hz左右，比例閥(fa)一般(ban)zui高(gao)幾(ji)十Hz；
- 伺服(fu)閥(fa)對液壓油液的要(yao)求更高，需要(yao)精過濾(lv)才行，否則容易堵塞，比例(li)閥(fa)要(yao)求低一(yi)些；
3.閥(fa)(fa)芯(xin)結構(gou)及加工精度不同。比例閥(fa)(fa)采用閥(fa)(fa)芯(xin)+閥(fa)(fa)體結構(gou)，閥(fa)(fa)體兼(jian)作閥(fa)(fa)套。伺服(fu)閥(fa)(fa)和伺服(fu)比例閥(fa)(fa)采用閥(fa)(fa)芯(xin)+閥(fa)(fa)套的(de)結構(gou)。 4.中位(wei)機(ji)能(neng)種類不(bu)同。比例換向(xiang)閥具有與普通(tong)換向(xiang)閥相似的中位(wei)機(ji)能(neng)，而伺服(fu)閥中位(wei)機(ji)能(neng)只有O型（Rexroth產品的E型）。 5.閥的額定壓降不同。 電氣(qi)比(bi)(bi)例閥(fa)自(zi)動(dong)(dong)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)可分成(cheng)斷(duan)續控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)和(he)(he)(he)連(lian)續控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)。斷(duan)續控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)即開關控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)。氣(qi)動(dong)(dong)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)系統(tong)中(zhong)使(shi)用動(dong)(dong)作頻率較(jiao)低的(de)開關式(ON-OFF)的(de)換(huan)向(xiang)閥(fa)來(lai)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)氣(qi)路的(de)通(tong)斷(duan)。靠減壓閥(fa)來(lai)調節所(suo)需(xu)要(yao)的(de)壓力(li)，靠節流(liu)閥(fa)來(lai)調節所(suo)需(xu)要(yao)的(de)流(liu)量。這種傳統(tong)的(de)氣(qi)動(dong)(dong)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)系統(tong)要(yao)想(xiang)要(yao)有(you)多(duo)個(ge)(ge)輸出力(li)和(he)(he)(he)多(duo)個(ge)(ge)運動(dong)(dong)速度，就(jiu)需(xu)要(yao)多(duo)個(ge)(ge)減壓閥(fa)、節流(liu)閥(fa)及(ji)換(huan)向(xiang)閥(fa)。這樣，不僅元件需(xu)要(yao)多(duo)，成(cheng)本高，構(gou)成(cheng)系統(tong)復雜，且許多(duo)元件都需(xu)要(yao)預先進行人工調節。電氣(qi)比(bi)(bi)例閥(fa)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)屬于連(lian)續控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，其特點是(shi)輸出量隨輸入量的(de)變化而變化，輸出量與輸入量之間存(cun)在一定的(de)比(bi)(bi)例關系。比(bi)(bi)例控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)有(you)開環控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)和(he)(he)(he)閉環控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)之分。 意大利ATOS比例閥型號表： 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 |
