意大利ATOS比例閥主要體現在以下幾點: 1.驅(qu)動(dong)裝置(zhi)不同。比例閥的(de)驅(qu)動(dong)裝置(zhi)是比例電磁鐵;伺服閥的(de)驅(qu)動(dong)裝置(zhi)是力馬(ma)達或力矩馬(ma)達; 2.性能參(can)數不(bu)(bu)(bu)同。滯環、中位死區、頻寬、過濾精度(du)等(deng)特性不(bu)(bu)(bu)同,因此應(ying)用場合(he)不(bu)(bu)(bu)同,伺(si)服(fu)(fu)閥和伺(si)服(fu)(fu)比例閥主(zhu)要(yao)應(ying)用在(zai)閉(bi)(bi)環控(kong)制系統(tong),其它結構(gou)的比例閥主(zhu)要(yao)應(ying)用在(zai)開(kai)環控(kong)系統(tong)及閉(bi)(bi)環速度(du)控(kong)制系統(tong); - 伺(si)服閥(fa)(fa)中(zhong)位沒(mei)有死區,比例閥(fa)(fa)有中(zhong)位死區;
- 伺服閥(fa)的頻響(響應(ying)頻率)更高,可以高達(da)200Hz左右(you),比例閥(fa)一般zui高幾十Hz;
- 伺服閥對液壓油液的要(yao)(yao)求更高,需要(yao)(yao)精過濾才(cai)行,否則容(rong)易堵塞,比例閥要(yao)(yao)求低一些;
3.閥(fa)芯結(jie)構及加工精度不同。比例閥(fa)采用閥(fa)芯+閥(fa)體結(jie)構,閥(fa)體兼作閥(fa)套。伺服(fu)閥(fa)和(he)伺服(fu)比例閥(fa)采用閥(fa)芯+閥(fa)套的結(jie)構。 4.中位(wei)(wei)機(ji)能(neng)種類不同(tong)。比(bi)例換向(xiang)閥具有與普(pu)通換向(xiang)閥相似的中位(wei)(wei)機(ji)能(neng),而伺服閥中位(wei)(wei)機(ji)能(neng)只(zhi)有O型(xing)(Rexroth產品的E型(xing))。 5.閥(fa)的額定壓降不同。 電(dian)(dian)氣(qi)比例閥(fa)(fa)(fa)自動控(kong)(kong)制(zhi)(zhi)可分成(cheng)斷(duan)續(xu)控(kong)(kong)制(zhi)(zhi)和(he)連(lian)續(xu)控(kong)(kong)制(zhi)(zhi)。斷(duan)續(xu)控(kong)(kong)制(zhi)(zhi)即開關(guan)控(kong)(kong)制(zhi)(zhi)。氣(qi)動控(kong)(kong)制(zhi)(zhi)系統中使用動作頻率(lv)較低的(de)開關(guan)式(ON-OFF)的(de)換向閥(fa)(fa)(fa)來(lai)控(kong)(kong)制(zhi)(zhi)氣(qi)路的(de)通斷(duan)。靠減(jian)壓(ya)閥(fa)(fa)(fa)來(lai)調(diao)節(jie)所需要的(de)壓(ya)力,靠節(jie)流(liu)閥(fa)(fa)(fa)來(lai)調(diao)節(jie)所需要的(de)流(liu)量。這種傳統的(de)氣(qi)動控(kong)(kong)制(zhi)(zhi)系統要想要有多個輸(shu)(shu)出力和(he)多個運動速(su)度,就需要多個減(jian)壓(ya)閥(fa)(fa)(fa)、節(jie)流(liu)閥(fa)(fa)(fa)及換向閥(fa)(fa)(fa)。這樣,不僅元件需要多,成(cheng)本高,構(gou)成(cheng)系統復雜,且(qie)許多元件都需要預先(xian)進行人工調(diao)節(jie)。電(dian)(dian)氣(qi)比例閥(fa)(fa)(fa)控(kong)(kong)制(zhi)(zhi)屬于(yu)連(lian)續(xu)控(kong)(kong)制(zhi)(zhi),其特(te)點(dian)是輸(shu)(shu)出量隨輸(shu)(shu)入(ru)量的(de)變化而變化,輸(shu)(shu)出量與輸(shu)(shu)入(ru)量之間存在(zai)一(yi)定(ding)的(de)比例關(guan)系。比例控(kong)(kong)制(zhi)(zhi)有開環控(kong)(kong)制(zhi)(zhi)和(he)閉環控(kong)(kong)制(zhi)(zhi)之分。 意大利ATOS比例閥型(xing)號表: LIMZA-A-1/180/M 20 LIMZA-A-3/180/M 40 LIMZO-A-3/210 LIMZO-A-4/210 LIMZO-A-5/315/P 30 LIMZO-AE-4/315 10 LIMZO-TER-4/210 50 LIMZO-TER-4/210/I LIQV-2 20 LIQV-2/K LIQZO-A-252S4 LIQZO-L-252L4 50 LIQZO-L-322L4 50 LIQZO-LE-402L4 50 LIQZO-LE-502L4 50 LIQZO-LE-632L4 51 LIQZO-T-252L4 LIQZO-T-252L4 50 /PE LIQZO-T-322L4 50 LIQZO-T-402L4 LIQZO-TE-322L4 50 LIRA-1/100 20 LIRA-1/210 20 LIRA-2/210/V 20 LIRA-3/100 LIRA-4/210/V 11 LIRZO-A-1/210 QVHZO-A-06/12 20 QVHZO-A-06/18 QVHZO-A-06/3 QVHZO-A-06/36 QVHZO-A-06/45 QVHZO-AE-06/3/I 10 QVHZO-AE-06/45/I QVHZO-T-06/12 31 QVHZO-T-06/3 31/WG QVHZO-TE-06/18 40 QVHZO-TE-06/18/I 40 QVHZO-TE-06/3 40 QVKMZOR-A-10/90/210/18 QVKZOR-A-10/65 QVKZOR-AE-10/90 10 QVKZOR-AES-BC-10/65 10? |