ATOS比例閥主要體現在以下幾點： 1.驅動裝置(zhi)不同(tong)。比(bi)(bi)例閥的驅動裝置(zhi)是比(bi)(bi)例電磁(ci)鐵(tie)；伺服閥的驅動裝置(zhi)是力馬達(da)(da)或力矩馬達(da)(da)； 2.性(xing)能參(can)數不(bu)同。滯環、中(zhong)位死區、頻(pin)寬、過濾(lv)精度等(deng)特性(xing)不(bu)同，因此應用場(chang)合不(bu)同，伺服(fu)閥和伺服(fu)比例閥主(zhu)要(yao)應用在閉環控(kong)制系統(tong)，其(qi)它結構的比例閥主(zhu)要(yao)應用在開環控(kong)系統(tong)及閉環速(su)度控(kong)制系統(tong)； - 伺服閥(fa)中(zhong)位(wei)沒有(you)死區(qu)，比例閥(fa)有(you)中(zhong)位(wei)死區(qu)；
- 伺服閥的頻響（響應頻率）更高，可以高達200Hz左右，比例閥一(yi)般zui高幾十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(rong)易堵塞，比例(li)閥要(yao)求(qiu)低一些；
3.閥芯(xin)結(jie)構及加工(gong)精度(du)不同。比(bi)例閥采用閥芯(xin)+閥體結(jie)構，閥體兼作閥套(tao)。伺服閥和伺服比(bi)例閥采用閥芯(xin)+閥套(tao)的結(jie)構。 4.中位機能(neng)種類不(bu)同。比例換向閥具(ju)有與普通換向閥相(xiang)似的(de)中位機能(neng)，而伺服閥中位機能(neng)只有O型(xing)（Rexroth產品的(de)E型(xing)）。 5.閥(fa)的額(e)定壓降不同(tong)。 電氣(qi)比(bi)(bi)例(li)(li)閥(fa)自(zi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)可(ke)分成(cheng)斷(duan)(duan)續(xu)(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)和(he)連續(xu)(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)。斷(duan)(duan)續(xu)(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)即(ji)開(kai)關(guan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)。氣(qi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)系(xi)統(tong)中使用動(dong)作(zuo)頻率較低(di)的(de)開(kai)關(guan)式(ON-OFF)的(de)換向(xiang)閥(fa)來控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)氣(qi)路的(de)通斷(duan)(duan)。靠減(jian)(jian)壓(ya)閥(fa)來調節所(suo)需(xu)要的(de)壓(ya)力，靠節流(liu)閥(fa)來調節所(suo)需(xu)要的(de)流(liu)量(liang)。這(zhe)種傳統(tong)的(de)氣(qi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)系(xi)統(tong)要想(xiang)要有多(duo)個(ge)(ge)輸出(chu)(chu)力和(he)多(duo)個(ge)(ge)運動(dong)速度，就需(xu)要多(duo)個(ge)(ge)減(jian)(jian)壓(ya)閥(fa)、節流(liu)閥(fa)及換向(xiang)閥(fa)。這(zhe)樣，不僅(jin)元(yuan)件(jian)需(xu)要多(duo)，成(cheng)本高，構成(cheng)系(xi)統(tong)復雜，且許多(duo)元(yuan)件(jian)都需(xu)要預先進行(xing)人工調節。電氣(qi)比(bi)(bi)例(li)(li)閥(fa)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)屬于(yu)連續(xu)(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)，其特(te)點(dian)是輸出(chu)(chu)量(liang)隨(sui)輸入(ru)(ru)量(liang)的(de)變(bian)化而變(bian)化，輸出(chu)(chu)量(liang)與輸入(ru)(ru)量(liang)之(zhi)間存在一定的(de)比(bi)(bi)例(li)(li)關(guan)系(xi)。比(bi)(bi)例(li)(li)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)有開(kai)環(huan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)和(he)閉(bi)環(huan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)之(zhi)分。 意大利ATOS比例閥型號表(biao)： 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 |
