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(tong)。比(bi)例(li)閥(fa)的驅(qu)動(dong)(dong)裝(zhuang)置(zhi)是比(bi)例(li)電磁鐵;伺服閥(fa)的驅(qu)動(dong)(dong)裝(zhuang)置(zhi)是力馬達或力矩(ju)馬達; 2.性能(neng)參數不(bu)同(tong)。滯環、中位死區、頻(pin)寬、過濾精(jing)度等特性不(bu)同(tong),因(yin)此應用場合不(bu)同(tong),伺(si)服閥和伺(si)服比例閥主(zhu)(zhu)要應用在閉環控(kong)制系統(tong),其它結構的比例閥主(zhu)(zhu)要應用在開環控(kong)系統(tong)及(ji)閉環速度控(kong)制系統(tong); - 伺(si)服閥(fa)中(zhong)位沒有死(si)(si)區,比例閥(fa)有中(zhong)位死(si)(si)區;
- 伺服閥的頻(pin)(pin)響(響應頻(pin)(pin)率)更高,可以高達200Hz左右,比例閥一般zui高幾十Hz;
- 伺服閥對(dui)液壓(ya)油液的(de)要求(qiu)更高,需要精過濾才行,否則容易堵塞,比例閥要求(qiu)低一(yi)些;
3.閥(fa)(fa)芯結構(gou)(gou)及(ji)加工精(jing)度不同(tong)。比例閥(fa)(fa)采用閥(fa)(fa)芯+閥(fa)(fa)體結構(gou)(gou),閥(fa)(fa)體兼作閥(fa)(fa)套(tao)。伺服閥(fa)(fa)和伺服比例閥(fa)(fa)采用閥(fa)(fa)芯+閥(fa)(fa)套(tao)的結構(gou)(gou)。 4.中(zhong)位機(ji)能(neng)種類(lei)不同。比例(li)換(huan)向閥具有與(yu)普通(tong)換(huan)向閥相(xiang)似的中(zhong)位機(ji)能(neng),而伺服閥中(zhong)位機(ji)能(neng)只(zhi)有O型(xing)(Rexroth產(chan)品的E型(xing))。 5.閥的(de)額定壓降不同。 電(dian)氣(qi)比例閥(fa)(fa)(fa)自動(dong)控(kong)制(zhi)(zhi)可分成(cheng)斷(duan)續(xu)控(kong)制(zhi)(zhi)和連續(xu)控(kong)制(zhi)(zhi)。斷(duan)續(xu)控(kong)制(zhi)(zhi)即開關(guan)控(kong)制(zhi)(zhi)。氣(qi)動(dong)控(kong)制(zhi)(zhi)系(xi)統(tong)(tong)中使(shi)用動(dong)作頻(pin)率(lv)較低的(de)(de)(de)開關(guan)式(ON-OFF)的(de)(de)(de)換向(xiang)閥(fa)(fa)(fa)來(lai)(lai)控(kong)制(zhi)(zhi)氣(qi)路的(de)(de)(de)通斷(duan)。靠減(jian)壓閥(fa)(fa)(fa)來(lai)(lai)調節(jie)所需(xu)要(yao)(yao)(yao)的(de)(de)(de)壓力(li),靠節(jie)流(liu)閥(fa)(fa)(fa)來(lai)(lai)調節(jie)所需(xu)要(yao)(yao)(yao)的(de)(de)(de)流(liu)量(liang)(liang)。這種傳統(tong)(tong)的(de)(de)(de)氣(qi)動(dong)控(kong)制(zhi)(zhi)系(xi)統(tong)(tong)要(yao)(yao)(yao)想(xiang)要(yao)(yao)(yao)有(you)(you)多(duo)(duo)個(ge)輸(shu)出(chu)(chu)力(li)和多(duo)(duo)個(ge)運(yun)動(dong)速度,就需(xu)要(yao)(yao)(yao)多(duo)(duo)個(ge)減(jian)壓閥(fa)(fa)(fa)、節(jie)流(liu)閥(fa)(fa)(fa)及(ji)換向(xiang)閥(fa)(fa)(fa)。這樣,不僅(jin)元(yuan)(yuan)件(jian)需(xu)要(yao)(yao)(yao)多(duo)(duo),成(cheng)本(ben)高(gao),構成(cheng)系(xi)統(tong)(tong)復雜(za),且許多(duo)(duo)元(yuan)(yuan)件(jian)都需(xu)要(yao)(yao)(yao)預先(xian)進行人工調節(jie)。電(dian)氣(qi)比例閥(fa)(fa)(fa)控(kong)制(zhi)(zhi)屬于(yu)連續(xu)控(kong)制(zhi)(zhi),其特點是(shi)輸(shu)出(chu)(chu)量(liang)(liang)隨輸(shu)入量(liang)(liang)的(de)(de)(de)變(bian)(bian)化而變(bian)(bian)化,輸(shu)出(chu)(chu)量(liang)(liang)與輸(shu)入量(liang)(liang)之間(jian)存在一(yi)定(ding)的(de)(de)(de)比例關(guan)系(xi)。比例控(kong)制(zhi)(zhi)有(you)(you)開環控(kong)制(zhi)(zhi)和閉環控(kong)制(zhi)(zhi)之分。 意大利ATOS比例閥型(xing)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 |