ATOS比例閥主要體現在以下幾點: 1.驅(qu)(qu)動裝置不同。比例閥的(de)驅(qu)(qu)動裝置是(shi)比例電磁鐵;伺服閥的(de)驅(qu)(qu)動裝置是(shi)力馬(ma)達(da)或力矩馬(ma)達(da); 2.性(xing)能(neng)參(can)數不(bu)同(tong)。滯環(huan)、中(zhong)位死區、頻(pin)寬、過(guo)濾(lv)精度(du)等特性(xing)不(bu)同(tong),因此應用場(chang)合不(bu)同(tong),伺(si)服(fu)閥和伺(si)服(fu)比例閥主(zhu)要應用在閉環(huan)控制系(xi)(xi)統(tong),其它結構的比例閥主(zhu)要應用在開環(huan)控系(xi)(xi)統(tong)及閉環(huan)速度(du)控制系(xi)(xi)統(tong); - 伺(si)服閥(fa)中位沒有(you)死(si)區,比例閥(fa)有(you)中位死(si)區;
- 伺服(fu)閥(fa)的頻響(響應頻率)更高(gao),可以(yi)高(gao)達200Hz左右,比例閥(fa)一般zui高(gao)幾十(shi)Hz;
- 伺服閥對(dui)液壓油液的(de)要(yao)求更高,需要(yao)精過濾才行,否則容易堵塞,比例閥要(yao)求低一些;
3.閥芯結(jie)構及加工精度不同。比(bi)例(li)閥采(cai)用(yong)閥芯+閥體結(jie)構,閥體兼(jian)作閥套。伺(si)服閥和伺(si)服比(bi)例(li)閥采(cai)用(yong)閥芯+閥套的結(jie)構。 4.中位機(ji)能(neng)種類不同。比例換向閥具有(you)與普通換向閥相(xiang)似的(de)中位機(ji)能(neng),而(er)伺服(fu)閥中位機(ji)能(neng)只有(you)O型(xing)(Rexroth產品的(de)E型(xing))。 5.閥的額定壓降不同。 電(dian)氣(qi)比(bi)例閥(fa)(fa)(fa)自動(dong)控(kong)(kong)(kong)(kong)制可分成斷續(xu)控(kong)(kong)(kong)(kong)制和(he)(he)連續(xu)控(kong)(kong)(kong)(kong)制。斷續(xu)控(kong)(kong)(kong)(kong)制即開關控(kong)(kong)(kong)(kong)制。氣(qi)動(dong)控(kong)(kong)(kong)(kong)制系統(tong)(tong)中使(shi)用動(dong)作(zuo)頻率較低的(de)開關式(ON-OFF)的(de)換向閥(fa)(fa)(fa)來(lai)控(kong)(kong)(kong)(kong)制氣(qi)路的(de)通斷。靠(kao)減壓(ya)閥(fa)(fa)(fa)來(lai)調(diao)(diao)節所需(xu)要(yao)的(de)壓(ya)力,靠(kao)節流(liu)(liu)閥(fa)(fa)(fa)來(lai)調(diao)(diao)節所需(xu)要(yao)的(de)流(liu)(liu)量。這(zhe)種(zhong)傳(chuan)統(tong)(tong)的(de)氣(qi)動(dong)控(kong)(kong)(kong)(kong)制系統(tong)(tong)要(yao)想(xiang)要(yao)有多(duo)(duo)(duo)(duo)個輸出力和(he)(he)多(duo)(duo)(duo)(duo)個運動(dong)速度,就需(xu)要(yao)多(duo)(duo)(duo)(duo)個減壓(ya)閥(fa)(fa)(fa)、節流(liu)(liu)閥(fa)(fa)(fa)及換向閥(fa)(fa)(fa)。這(zhe)樣(yang),不僅(jin)元件(jian)需(xu)要(yao)多(duo)(duo)(duo)(duo),成本高,構成系統(tong)(tong)復雜,且許多(duo)(duo)(duo)(duo)元件(jian)都(dou)需(xu)要(yao)預先(xian)進(jin)行人工調(diao)(diao)節。電(dian)氣(qi)比(bi)例閥(fa)(fa)(fa)控(kong)(kong)(kong)(kong)制屬于連續(xu)控(kong)(kong)(kong)(kong)制,其特(te)點是輸出量隨輸入量的(de)變化而變化,輸出量與輸入量之(zhi)間存在一(yi)定的(de)比(bi)例關系。比(bi)例控(kong)(kong)(kong)(kong)制有開環(huan)控(kong)(kong)(kong)(kong)制和(he)(he)閉環(huan)控(kong)(kong)(kong)(kong)制之(zhi)分。 意大利ATOS比例閥型號(hao)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 |