意大利ATOS比例閥主要體現在以下幾點: 1.驅(qu)動裝置不同。比例(li)閥(fa)的驅(qu)動裝置是(shi)比例(li)電磁鐵;伺(si)服閥(fa)的驅(qu)動裝置是(shi)力馬達或力矩馬達; 2.性(xing)能參數不同。滯(zhi)環(huan)(huan)、中位死(si)區、頻寬、過濾精(jing)度等特性(xing)不同,因(yin)此應(ying)(ying)用場合不同,伺(si)服閥(fa)和伺(si)服比(bi)例閥(fa)主要(yao)應(ying)(ying)用在(zai)閉(bi)(bi)環(huan)(huan)控制系(xi)統(tong),其它結(jie)構的(de)比(bi)例閥(fa)主要(yao)應(ying)(ying)用在(zai)開環(huan)(huan)控系(xi)統(tong)及閉(bi)(bi)環(huan)(huan)速度控制系(xi)統(tong); - 伺服閥中位(wei)沒(mei)有死區,比例閥有中位(wei)死區;
- 伺服(fu)閥的頻響(xiang)(響(xiang)應頻率)更高(gao),可以高(gao)達200Hz左右,比例閥一(yi)般(ban)zui高(gao)幾(ji)十Hz;
- 伺服閥(fa)對液壓油液的要(yao)求更高,需要(yao)精過濾(lv)才行,否則容(rong)易(yi)堵塞,比例(li)閥(fa)要(yao)求低一些;
3.閥(fa)芯(xin)結(jie)構(gou)及加工(gong)精度不同。比例(li)閥(fa)采(cai)用(yong)(yong)閥(fa)芯(xin)+閥(fa)體(ti)結(jie)構(gou),閥(fa)體(ti)兼作(zuo)閥(fa)套(tao)。伺(si)服(fu)閥(fa)和(he)伺(si)服(fu)比例(li)閥(fa)采(cai)用(yong)(yong)閥(fa)芯(xin)+閥(fa)套(tao)的結(jie)構(gou)。 4.中(zhong)位(wei)機能(neng)種(zhong)類不同。比例(li)換向(xiang)(xiang)閥具有與普通換向(xiang)(xiang)閥相(xiang)似的中(zhong)位(wei)機能(neng),而伺服閥中(zhong)位(wei)機能(neng)只有O型(xing)(xing)(Rexroth產品(pin)的E型(xing)(xing))。 5.閥的額定壓降不同。 電氣(qi)比例(li)閥(fa)自動(dong)控(kong)(kong)(kong)制(zhi)可分成斷(duan)續(xu)控(kong)(kong)(kong)制(zhi)和連續(xu)控(kong)(kong)(kong)制(zhi)。斷(duan)續(xu)控(kong)(kong)(kong)制(zhi)即開(kai)關(guan)控(kong)(kong)(kong)制(zhi)。氣(qi)動(dong)控(kong)(kong)(kong)制(zhi)系統(tong)(tong)中使(shi)用動(dong)作頻(pin)率較低的(de)開(kai)關(guan)式(shi)(ON-OFF)的(de)換向(xiang)閥(fa)來(lai)(lai)控(kong)(kong)(kong)制(zhi)氣(qi)路的(de)通斷(duan)。靠(kao)(kao)減壓(ya)(ya)(ya)閥(fa)來(lai)(lai)調(diao)節(jie)所(suo)需要(yao)的(de)壓(ya)(ya)(ya)力(li),靠(kao)(kao)節(jie)流(liu)閥(fa)來(lai)(lai)調(diao)節(jie)所(suo)需要(yao)的(de)流(liu)量(liang)。這(zhe)種傳統(tong)(tong)的(de)氣(qi)動(dong)控(kong)(kong)(kong)制(zhi)系統(tong)(tong)要(yao)想(xiang)要(yao)有多(duo)個(ge)(ge)輸(shu)出(chu)力(li)和多(duo)個(ge)(ge)運動(dong)速度,就需要(yao)多(duo)個(ge)(ge)減壓(ya)(ya)(ya)閥(fa)、節(jie)流(liu)閥(fa)及換向(xiang)閥(fa)。這(zhe)樣,不僅(jin)元件需要(yao)多(duo),成本高,構成系統(tong)(tong)復雜,且許(xu)多(duo)元件都需要(yao)預先進行人工調(diao)節(jie)。電氣(qi)比例(li)閥(fa)控(kong)(kong)(kong)制(zhi)屬于連續(xu)控(kong)(kong)(kong)制(zhi),其特點是輸(shu)出(chu)量(liang)隨輸(shu)入(ru)(ru)量(liang)的(de)變(bian)化(hua)而變(bian)化(hua),輸(shu)出(chu)量(liang)與輸(shu)入(ru)(ru)量(liang)之間存(cun)在一定的(de)比例(li)關(guan)系。比例(li)控(kong)(kong)(kong)制(zhi)有開(kai)環(huan)控(kong)(kong)(kong)制(zhi)和閉環(huan)控(kong)(kong)(kong)制(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 |