ATOS比例閥主要體現在以下幾點: 1.驅(qu)動(dong)(dong)裝置(zhi)不同。比(bi)例(li)閥的驅(qu)動(dong)(dong)裝置(zhi)是(shi)比(bi)例(li)電磁鐵(tie);伺服閥的驅(qu)動(dong)(dong)裝置(zhi)是(shi)力馬達(da)或力矩(ju)馬達(da); 2.性能參(can)數(shu)不同。滯環、中位死區、頻寬(kuan)、過(guo)濾精度(du)等特性不同,因(yin)此應用場合(he)不同,伺服(fu)閥(fa)和伺服(fu)比(bi)例閥(fa)主要應用在閉環控制(zhi)系(xi)統,其它結構的(de)比(bi)例閥(fa)主要應用在開(kai)環控系(xi)統及閉環速度(du)控制(zhi)系(xi)統; - 伺服閥中(zhong)位(wei)沒(mei)有死區,比例(li)閥有中(zhong)位(wei)死區;
- 伺服閥的(de)頻(pin)(pin)響(xiang)(響(xiang)應頻(pin)(pin)率)更高,可以(yi)高達(da)200Hz左右(you),比例閥一般zui高幾(ji)十(shi)Hz;
- 伺服閥(fa)對液壓油(you)液的要求(qiu)(qiu)更(geng)高,需要精過濾才行,否則容易(yi)堵塞(sai),比例閥(fa)要求(qiu)(qiu)低一些(xie);
3.閥(fa)(fa)(fa)芯結構及加工(gong)精度不同。比(bi)例閥(fa)(fa)(fa)采(cai)用(yong)(yong)閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)體結構,閥(fa)(fa)(fa)體兼作閥(fa)(fa)(fa)套(tao)。伺(si)服閥(fa)(fa)(fa)和(he)伺(si)服比(bi)例閥(fa)(fa)(fa)采(cai)用(yong)(yong)閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)套(tao)的結構。 4.中位機能種類不同。比例換向閥(fa)具有與普(pu)通換向閥(fa)相似的中位機能,而(er)伺服(fu)閥(fa)中位機能只有O型(xing)(Rexroth產品的E型(xing))。 5.閥的額定壓降不同。 電氣(qi)(qi)(qi)(qi)比(bi)例閥自動(dong)控(kong)(kong)(kong)制(zhi)可(ke)分成(cheng)斷(duan)續控(kong)(kong)(kong)制(zhi)和(he)(he)連(lian)(lian)續控(kong)(kong)(kong)制(zhi)。斷(duan)續控(kong)(kong)(kong)制(zhi)即開關(guan)控(kong)(kong)(kong)制(zhi)。氣(qi)(qi)(qi)(qi)動(dong)控(kong)(kong)(kong)制(zhi)系(xi)統(tong)中使用動(dong)作頻率(lv)較低(di)的(de)(de)(de)(de)開關(guan)式(ON-OFF)的(de)(de)(de)(de)換向(xiang)閥來(lai)控(kong)(kong)(kong)制(zhi)氣(qi)(qi)(qi)(qi)路(lu)的(de)(de)(de)(de)通斷(duan)。靠減壓閥來(lai)調(diao)節所需(xu)要(yao)的(de)(de)(de)(de)壓力(li),靠節流閥來(lai)調(diao)節所需(xu)要(yao)的(de)(de)(de)(de)流量。這(zhe)種傳統(tong)的(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)動(dong)控(kong)(kong)(kong)制(zhi)系(xi)統(tong)要(yao)想要(yao)有多(duo)個輸出(chu)(chu)力(li)和(he)(he)多(duo)個運動(dong)速(su)度(du),就需(xu)要(yao)多(duo)個減壓閥、節流閥及換向(xiang)閥。這(zhe)樣,不僅元(yuan)件(jian)需(xu)要(yao)多(duo),成(cheng)本高,構成(cheng)系(xi)統(tong)復雜,且(qie)許多(duo)元(yuan)件(jian)都需(xu)要(yao)預先進行人工調(diao)節。電氣(qi)(qi)(qi)(qi)比(bi)例閥控(kong)(kong)(kong)制(zhi)屬于(yu)連(lian)(lian)續控(kong)(kong)(kong)制(zhi),其特點是輸出(chu)(chu)量隨輸入量的(de)(de)(de)(de)變(bian)(bian)化而(er)變(bian)(bian)化,輸出(chu)(chu)量與輸入量之間存在一定的(de)(de)(de)(de)比(bi)例關(guan)系(xi)。比(bi)例控(kong)(kong)(kong)制(zhi)有開環(huan)控(kong)(kong)(kong)制(zhi)和(he)(he)閉(bi)環(huan)控(kong)(kong)(kong)制(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 |