意大利ATOS比例閥主要體現在以下幾點: 1.驅動(dong)裝置(zhi)不同。比例(li)閥的驅動(dong)裝置(zhi)是比例(li)電(dian)磁鐵;伺服閥的驅動(dong)裝置(zhi)是力馬(ma)達(da)或力矩馬(ma)達(da); 2.性(xing)能參數不同(tong)。滯環(huan)、中位死區、頻寬(kuan)、過濾精度(du)等特性(xing)不同(tong),因此(ci)應用(yong)場合不同(tong),伺服閥(fa)和(he)伺服比例閥(fa)主(zhu)(zhu)要(yao)應用(yong)在閉(bi)環(huan)控(kong)制系統(tong),其它結構的比例閥(fa)主(zhu)(zhu)要(yao)應用(yong)在開環(huan)控(kong)系統(tong)及(ji)閉(bi)環(huan)速度(du)控(kong)制系統(tong); - 伺服(fu)閥中(zhong)位沒有(you)死(si)區,比例閥有(you)中(zhong)位死(si)區;
- 伺服閥的頻響(xiang)(響(xiang)應頻率)更高,可以高達200Hz左(zuo)右,比例閥一(yi)般zui高幾十Hz;
- 伺服閥(fa)對液壓油液的要(yao)求(qiu)更高(gao),需要(yao)精過濾才行,否則容易堵塞,比(bi)例閥(fa)要(yao)求(qiu)低一些;
3.閥(fa)(fa)芯結構及加工精度(du)不(bu)同(tong)。比例閥(fa)(fa)采(cai)(cai)用閥(fa)(fa)芯+閥(fa)(fa)體結構,閥(fa)(fa)體兼作(zuo)閥(fa)(fa)套。伺服閥(fa)(fa)和伺服比例閥(fa)(fa)采(cai)(cai)用閥(fa)(fa)芯+閥(fa)(fa)套的結構。 4.中位機能(neng)種(zhong)類不(bu)同(tong)。比例換向閥(fa)具有(you)與普通(tong)換向閥(fa)相似的(de)中位機能(neng),而(er)伺服閥(fa)中位機能(neng)只有(you)O型(xing)(Rexroth產(chan)品(pin)的(de)E型(xing))。 5.閥(fa)的額定壓(ya)降不同。 電氣(qi)比(bi)(bi)例(li)(li)閥(fa)自動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)可分成斷(duan)續(xu)(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)連續(xu)(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷(duan)續(xu)(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)即開關控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣(qi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統中使用(yong)動(dong)作頻率較低的(de)(de)開關式(ON-OFF)的(de)(de)換(huan)向閥(fa)來(lai)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣(qi)路的(de)(de)通斷(duan)。靠(kao)減(jian)壓(ya)閥(fa)來(lai)調節(jie)所(suo)需(xu)(xu)要(yao)的(de)(de)壓(ya)力,靠(kao)節(jie)流(liu)(liu)閥(fa)來(lai)調節(jie)所(suo)需(xu)(xu)要(yao)的(de)(de)流(liu)(liu)量(liang)(liang)(liang)。這(zhe)種傳(chuan)統的(de)(de)氣(qi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統要(yao)想(xiang)要(yao)有多(duo)(duo)個(ge)(ge)輸(shu)(shu)(shu)出(chu)力和(he)多(duo)(duo)個(ge)(ge)運動(dong)速(su)度,就需(xu)(xu)要(yao)多(duo)(duo)個(ge)(ge)減(jian)壓(ya)閥(fa)、節(jie)流(liu)(liu)閥(fa)及(ji)換(huan)向閥(fa)。這(zhe)樣(yang),不僅元件需(xu)(xu)要(yao)多(duo)(duo),成本高,構成系(xi)統復(fu)雜,且許(xu)多(duo)(duo)元件都需(xu)(xu)要(yao)預(yu)先進(jin)行人工調節(jie)。電氣(qi)比(bi)(bi)例(li)(li)閥(fa)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬于連續(xu)(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi),其特(te)點是輸(shu)(shu)(shu)出(chu)量(liang)(liang)(liang)隨輸(shu)(shu)(shu)入量(liang)(liang)(liang)的(de)(de)變(bian)化(hua)而變(bian)化(hua),輸(shu)(shu)(shu)出(chu)量(liang)(liang)(liang)與輸(shu)(shu)(shu)入量(liang)(liang)(liang)之間存在(zai)一(yi)定(ding)的(de)(de)比(bi)(bi)例(li)(li)關系(xi)。比(bi)(bi)例(li)(li)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)有開環控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)閉環控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)之分。 意大利ATOS比例閥型(xing)號表: 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 |