意大利ATOS比例閥主要體現在以下幾點: 1.驅(qu)動裝(zhuang)(zhuang)置(zhi)不(bu)同。比例閥的驅(qu)動裝(zhuang)(zhuang)置(zhi)是比例電磁鐵;伺服閥的驅(qu)動裝(zhuang)(zhuang)置(zhi)是力馬(ma)達或力矩馬(ma)達; 2.性能參(can)數(shu)不(bu)同(tong)(tong)。滯環(huan)、中(zhong)位(wei)死(si)區(qu)、頻寬、過濾精(jing)度等特性不(bu)同(tong)(tong),因此應用場合不(bu)同(tong)(tong),伺服(fu)閥(fa)和伺服(fu)比(bi)例(li)閥(fa)主要(yao)應用在閉環(huan)控制系(xi)統(tong),其它結構的比(bi)例(li)閥(fa)主要(yao)應用在開環(huan)控系(xi)統(tong)及閉環(huan)速(su)度控制系(xi)統(tong); - 伺服閥中(zhong)位沒有(you)死區(qu),比(bi)例閥有(you)中(zhong)位死區(qu);
- 伺(si)服閥(fa)的頻(pin)響(xiang)(響(xiang)應(ying)頻(pin)率)更高,可以高達200Hz左右,比例閥(fa)一般zui高幾(ji)十(shi)Hz;
- 伺(si)服閥對液壓油液的要(yao)求(qiu)更高,需要(yao)精過濾才(cai)行(xing),否則容易堵塞,比(bi)例閥要(yao)求(qiu)低(di)一些;
3.閥(fa)(fa)(fa)芯(xin)結構(gou)及加工(gong)精度不(bu)同。比例閥(fa)(fa)(fa)采(cai)用閥(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)體(ti)結構(gou),閥(fa)(fa)(fa)體(ti)兼作閥(fa)(fa)(fa)套。伺服(fu)閥(fa)(fa)(fa)和伺服(fu)比例閥(fa)(fa)(fa)采(cai)用閥(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)套的結構(gou)。 4.中位(wei)(wei)機(ji)能種類不同。比例換向(xiang)閥具有與普通換向(xiang)閥相似的中位(wei)(wei)機(ji)能,而(er)伺服閥中位(wei)(wei)機(ji)能只有O型(Rexroth產品的E型)。 5.閥的額定壓降不同。 電氣(qi)比(bi)(bi)(bi)例(li)閥(fa)自(zi)動(dong)(dong)控(kong)(kong)制(zhi)可(ke)分成(cheng)(cheng)斷(duan)續控(kong)(kong)制(zhi)和(he)連(lian)續控(kong)(kong)制(zhi)。斷(duan)續控(kong)(kong)制(zhi)即開(kai)(kai)關(guan)(guan)控(kong)(kong)制(zhi)。氣(qi)動(dong)(dong)控(kong)(kong)制(zhi)系(xi)(xi)(xi)統中(zhong)使用動(dong)(dong)作頻率較低的開(kai)(kai)關(guan)(guan)式(ON-OFF)的換(huan)向閥(fa)來(lai)控(kong)(kong)制(zhi)氣(qi)路的通斷(duan)。靠(kao)減(jian)壓閥(fa)來(lai)調(diao)(diao)節(jie)所需要(yao)的壓力,靠(kao)節(jie)流閥(fa)來(lai)調(diao)(diao)節(jie)所需要(yao)的流量。這種傳統的氣(qi)動(dong)(dong)控(kong)(kong)制(zhi)系(xi)(xi)(xi)統要(yao)想(xiang)要(yao)有多個(ge)輸出(chu)(chu)力和(he)多個(ge)運動(dong)(dong)速度,就需要(yao)多個(ge)減(jian)壓閥(fa)、節(jie)流閥(fa)及換(huan)向閥(fa)。這樣,不僅元(yuan)件需要(yao)多,成(cheng)(cheng)本高(gao),構成(cheng)(cheng)系(xi)(xi)(xi)統復雜,且許多元(yuan)件都(dou)需要(yao)預先進(jin)行人(ren)工調(diao)(diao)節(jie)。電氣(qi)比(bi)(bi)(bi)例(li)閥(fa)控(kong)(kong)制(zhi)屬于連(lian)續控(kong)(kong)制(zhi),其特點是(shi)輸出(chu)(chu)量隨輸入(ru)量的變(bian)化(hua)而(er)變(bian)化(hua),輸出(chu)(chu)量與輸入(ru)量之間(jian)存(cun)在一(yi)定的比(bi)(bi)(bi)例(li)關(guan)(guan)系(xi)(xi)(xi)。比(bi)(bi)(bi)例(li)控(kong)(kong)制(zhi)有開(kai)(kai)環(huan)控(kong)(kong)制(zhi)和(he)閉(bi)環(huan)控(kong)(kong)制(zhi)之分。 意大利ATOS比例閥型號表: 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? |