ATOS比例閥主要體現在以(yi)下幾點(dian): 1.驅動(dong)(dong)裝(zhuang)置不同。比例(li)閥的驅動(dong)(dong)裝(zhuang)置是比例(li)電磁(ci)鐵(tie);伺(si)服閥的驅動(dong)(dong)裝(zhuang)置是力(li)馬達或力(li)矩馬達; 2.性能參數不同(tong)。滯環(huan)、中位死(si)區、頻寬、過濾精度(du)等(deng)特(te)性不同(tong),因此應(ying)(ying)用場(chang)合不同(tong),伺(si)服(fu)閥和伺(si)服(fu)比例閥主要應(ying)(ying)用在(zai)閉環(huan)控制(zhi)系(xi)(xi)統(tong)(tong),其它(ta)結構的比例閥主要應(ying)(ying)用在(zai)開環(huan)控系(xi)(xi)統(tong)(tong)及閉環(huan)速度(du)控制(zhi)系(xi)(xi)統(tong)(tong); - 伺服(fu)閥(fa)(fa)中(zhong)位(wei)沒有死(si)區,比(bi)例閥(fa)(fa)有中(zhong)位(wei)死(si)區;
- 伺(si)服閥(fa)的頻響(xiang)(響(xiang)應(ying)頻率(lv))更高,可以高達200Hz左右,比例閥(fa)一般zui高幾(ji)十Hz;
- 伺服(fu)閥(fa)對液壓油(you)液的要求(qiu)更高,需要精(jing)過濾才行,否(fou)則(ze)容易堵(du)塞,比例閥(fa)要求(qiu)低一些;
3.閥(fa)芯結(jie)構(gou)及加(jia)工(gong)精(jing)度不(bu)同(tong)。比例(li)閥(fa)采用閥(fa)芯+閥(fa)體結(jie)構(gou),閥(fa)體兼作閥(fa)套(tao)。伺(si)服閥(fa)和伺(si)服比例(li)閥(fa)采用閥(fa)芯+閥(fa)套(tao)的結(jie)構(gou)。 4.中(zhong)(zhong)位機能種類(lei)不同。比例換向(xiang)閥(fa)具有(you)與普通換向(xiang)閥(fa)相似(si)的中(zhong)(zhong)位機能,而伺服(fu)閥(fa)中(zhong)(zhong)位機能只(zhi)有(you)O型(Rexroth產品的E型)。 5.閥的額定(ding)壓降(jiang)不同。 電氣(qi)比(bi)例(li)閥(fa)自(zi)動(dong)(dong)控(kong)(kong)制可(ke)分成斷(duan)續(xu)控(kong)(kong)制和連(lian)續(xu)控(kong)(kong)制。斷(duan)續(xu)控(kong)(kong)制即(ji)開(kai)關控(kong)(kong)制。氣(qi)動(dong)(dong)控(kong)(kong)制系統(tong)(tong)(tong)中使用動(dong)(dong)作(zuo)頻率(lv)較低的(de)(de)(de)(de)開(kai)關式(ON-OFF)的(de)(de)(de)(de)換向(xiang)閥(fa)來控(kong)(kong)制氣(qi)路的(de)(de)(de)(de)通斷(duan)。靠減壓閥(fa)來調(diao)節(jie)所需(xu)(xu)要(yao)(yao)(yao)的(de)(de)(de)(de)壓力(li),靠節(jie)流閥(fa)來調(diao)節(jie)所需(xu)(xu)要(yao)(yao)(yao)的(de)(de)(de)(de)流量。這(zhe)種傳統(tong)(tong)(tong)的(de)(de)(de)(de)氣(qi)動(dong)(dong)控(kong)(kong)制系統(tong)(tong)(tong)要(yao)(yao)(yao)想要(yao)(yao)(yao)有多個(ge)輸(shu)出(chu)力(li)和多個(ge)運動(dong)(dong)速度,就需(xu)(xu)要(yao)(yao)(yao)多個(ge)減壓閥(fa)、節(jie)流閥(fa)及換向(xiang)閥(fa)。這(zhe)樣,不僅元(yuan)件需(xu)(xu)要(yao)(yao)(yao)多,成本(ben)高(gao),構成系統(tong)(tong)(tong)復雜,且(qie)許多元(yuan)件都需(xu)(xu)要(yao)(yao)(yao)預先進行人工調(diao)節(jie)。電氣(qi)比(bi)例(li)閥(fa)控(kong)(kong)制屬(shu)于連(lian)續(xu)控(kong)(kong)制,其特點(dian)是輸(shu)出(chu)量隨輸(shu)入(ru)(ru)量的(de)(de)(de)(de)變化(hua)而(er)變化(hua),輸(shu)出(chu)量與輸(shu)入(ru)(ru)量之間存在(zai)一定的(de)(de)(de)(de)比(bi)例(li)關系。比(bi)例(li)控(kong)(kong)制有開(kai)環(huan)控(kong)(kong)制和閉環(huan)控(kong)(kong)制之分。 ??意大利ATOS比例閥型號表: DHZO-ATE-073-P3/B/DP27SB 20 DHZO-T-051-L1 DHZO-T-051-L5 31 DHZO-T-071-D5 DHZO-T-071-L5 DHZO-T-071-S5 DHZO-TE-051-L5/Y 40 DHZO-TE-071-L5 DHZO-TE-071-S5 40 /PE DHZO-TE-073-S5 DKZA-A-173-L5/PA-M/7 DKZO-A-151-S5 DKZO-A-171-L5 DKZO-A-173-S5 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 DKZOR-TE-171-S5/Y DKZOR-TE-173-L5 40 |