意大利ATOS比例閥主要體現在以下幾點: 1.驅動(dong)(dong)裝(zhuang)置(zhi)不同(tong)。比例閥的驅動(dong)(dong)裝(zhuang)置(zhi)是比例電(dian)磁(ci)鐵;伺服(fu)閥的驅動(dong)(dong)裝(zhuang)置(zhi)是力馬達或力矩馬達; 2.性(xing)能(neng)參數不同(tong)。滯環、中位死區、頻寬、過濾精度等特(te)性(xing)不同(tong),因此(ci)應(ying)(ying)用(yong)場合(he)不同(tong),伺服閥(fa)和伺服比(bi)例閥(fa)主要(yao)應(ying)(ying)用(yong)在閉(bi)環控制(zhi)系(xi)統,其它結構(gou)的(de)比(bi)例閥(fa)主要(yao)應(ying)(ying)用(yong)在開環控系(xi)統及閉(bi)環速度控制(zhi)系(xi)統; - 伺(si)服(fu)閥中位(wei)沒(mei)有死(si)區,比例閥有中位(wei)死(si)區;
- 伺服閥的頻(pin)響(響應頻(pin)率(lv))更高,可以高達200Hz左(zuo)右,比例閥一般(ban)zui高幾十Hz;
- 伺服閥對液(ye)壓油液(ye)的要(yao)求(qiu)更(geng)高,需要(yao)精過(guo)濾(lv)才行,否則容易堵塞,比例閥要(yao)求(qiu)低(di)一些;
3.閥(fa)(fa)(fa)芯(xin)結(jie)構(gou)及加工精度不同(tong)。比(bi)例(li)閥(fa)(fa)(fa)采用閥(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)體結(jie)構(gou),閥(fa)(fa)(fa)體兼作閥(fa)(fa)(fa)套。伺服閥(fa)(fa)(fa)和伺服比(bi)例(li)閥(fa)(fa)(fa)采用閥(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)套的結(jie)構(gou)。 4.中位機(ji)能種類不同。比(bi)例換(huan)向閥具有與普通換(huan)向閥相似的中位機(ji)能,而伺(si)服閥中位機(ji)能只有O型(Rexroth產品的E型)。 5.閥的額定壓降不同(tong)。 電(dian)氣(qi)比(bi)(bi)例閥(fa)自動控(kong)(kong)(kong)(kong)制(zhi)可分(fen)成(cheng)斷(duan)續控(kong)(kong)(kong)(kong)制(zhi)和(he)連續控(kong)(kong)(kong)(kong)制(zhi)。斷(duan)續控(kong)(kong)(kong)(kong)制(zhi)即開關控(kong)(kong)(kong)(kong)制(zhi)。氣(qi)動控(kong)(kong)(kong)(kong)制(zhi)系(xi)(xi)統(tong)(tong)中使用(yong)動作頻(pin)率較(jiao)低的(de)(de)(de)開關式(shi)(ON-OFF)的(de)(de)(de)換(huan)向閥(fa)來控(kong)(kong)(kong)(kong)制(zhi)氣(qi)路的(de)(de)(de)通斷(duan)。靠減(jian)壓(ya)閥(fa)來調節(jie)(jie)所(suo)需(xu)(xu)要(yao)(yao)(yao)的(de)(de)(de)壓(ya)力,靠節(jie)(jie)流閥(fa)來調節(jie)(jie)所(suo)需(xu)(xu)要(yao)(yao)(yao)的(de)(de)(de)流量(liang)(liang)。這(zhe)種傳統(tong)(tong)的(de)(de)(de)氣(qi)動控(kong)(kong)(kong)(kong)制(zhi)系(xi)(xi)統(tong)(tong)要(yao)(yao)(yao)想(xiang)要(yao)(yao)(yao)有(you)多(duo)個(ge)輸(shu)(shu)出力和(he)多(duo)個(ge)運動速度(du),就需(xu)(xu)要(yao)(yao)(yao)多(duo)個(ge)減(jian)壓(ya)閥(fa)、節(jie)(jie)流閥(fa)及換(huan)向閥(fa)。這(zhe)樣,不僅元(yuan)件需(xu)(xu)要(yao)(yao)(yao)多(duo),成(cheng)本高,構成(cheng)系(xi)(xi)統(tong)(tong)復(fu)雜(za),且許(xu)多(duo)元(yuan)件都需(xu)(xu)要(yao)(yao)(yao)預(yu)先進行人工調節(jie)(jie)。電(dian)氣(qi)比(bi)(bi)例閥(fa)控(kong)(kong)(kong)(kong)制(zhi)屬(shu)于連續控(kong)(kong)(kong)(kong)制(zhi),其(qi)特點是輸(shu)(shu)出量(liang)(liang)隨輸(shu)(shu)入(ru)量(liang)(liang)的(de)(de)(de)變化而變化,輸(shu)(shu)出量(liang)(liang)與(yu)輸(shu)(shu)入(ru)量(liang)(liang)之間(jian)存在一定的(de)(de)(de)比(bi)(bi)例關系(xi)(xi)。比(bi)(bi)例控(kong)(kong)(kong)(kong)制(zhi)有(you)開環控(kong)(kong)(kong)(kong)制(zhi)和(he)閉環控(kong)(kong)(kong)(kong)制(zhi)之分(fen)。 意大利ATOS比例閥型(xing)號表: LEQZO-A-162S4 LEQZO-A-252L4 LEQZO-A-252S4 LIQZO-LE-252L4 LIQZO-LE-253L4 LIQZO-LE-253L4/Q LIQZO-LE-322L4 LIQZO-LE-322L4/F LIQZO-LE-322L4/Q LIQZO-LE-402L4 LIQZO-LE-403-L4 LIQZO-LE-403-L4/Q LIQZO-LE-502L4 LIQZO-LE-503L4 LIQZO-LE-632L4 LIQZO-LE-632L4/Q LIQZO-LE-633L4 LIQZO-LE-803-L4 LIQZO-LE-803-L4/F LIQZO-LES-BP-502L4/Z LIQZO-LES-PS-162L4 LIQZO-LES-PS-162L4/Z LIQZO-T-402L4 LIQZO-T-502L4 LIQZO-TE-162L4 LIQZO-TE-252L4 LIQZO-TE-252L4/I LIQZO-TE-322L4 LIQZO-TE-322L4/F LIQZO-TE-402L4 LIQZO-TE-502L4 LIQZO-TES-PS-162L4 |