ATOS比例閥主要體現在以下幾點: 1.驅(qu)動(dong)(dong)裝(zhuang)置不同。比例(li)閥的(de)驅(qu)動(dong)(dong)裝(zhuang)置是比例(li)電(dian)磁鐵;伺服(fu)閥的(de)驅(qu)動(dong)(dong)裝(zhuang)置是力馬達或力矩馬達; 2.性能參(can)數不同。滯環(huan)、中位(wei)死區、頻寬、過濾精度等(deng)特性不同,因此(ci)應用場合不同,伺服(fu)閥和伺服(fu)比例閥主要(yao)應用在閉環(huan)控(kong)制(zhi)系統,其它(ta)結構的比例閥主要(yao)應用在開(kai)環(huan)控(kong)系統及閉環(huan)速度控(kong)制(zhi)系統; - 伺服閥中位沒有死區,比(bi)例閥有中位死區;
- 伺服閥(fa)的頻響(xiang)(響(xiang)應頻率(lv))更高(gao),可以高(gao)達200Hz左(zuo)右,比例閥(fa)一般(ban)zui高(gao)幾十Hz;
- 伺服閥對液(ye)壓油液(ye)的(de)要(yao)求更高,需要(yao)精過濾才行,否(fou)則容易(yi)堵塞(sai),比例閥要(yao)求低(di)一(yi)些;
3.閥(fa)芯結構(gou)及加工精度(du)不同。比例(li)(li)閥(fa)采用閥(fa)芯+閥(fa)體結構(gou),閥(fa)體兼作閥(fa)套。伺(si)服(fu)閥(fa)和伺(si)服(fu)比例(li)(li)閥(fa)采用閥(fa)芯+閥(fa)套的結構(gou)。 4.中(zhong)位機(ji)能種類不同。比(bi)例換向閥具有與普通(tong)換向閥相(xiang)似(si)的(de)中(zhong)位機(ji)能,而(er)伺服閥中(zhong)位機(ji)能只有O型(xing)(Rexroth產品的(de)E型(xing))。 5.閥的額定壓(ya)降不(bu)同。 電氣比例(li)閥(fa)自動控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)可分成斷(duan)續(xu)(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和連續(xu)(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷(duan)續(xu)(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)即開(kai)關(guan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣動控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系統(tong)中使用動作頻率較(jiao)低的(de)(de)開(kai)關(guan)式(ON-OFF)的(de)(de)換(huan)向閥(fa)來(lai)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣路的(de)(de)通斷(duan)。靠減壓(ya)閥(fa)來(lai)調節(jie)所(suo)需要的(de)(de)壓(ya)力(li),靠節(jie)流閥(fa)來(lai)調節(jie)所(suo)需要的(de)(de)流量(liang)。這種(zhong)傳統(tong)的(de)(de)氣動控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系統(tong)要想要有多(duo)個輸(shu)出力(li)和多(duo)個運(yun)動速度(du),就需要多(duo)個減壓(ya)閥(fa)、節(jie)流閥(fa)及換(huan)向閥(fa)。這樣,不僅元件(jian)需要多(duo),成本高,構(gou)成系統(tong)復雜(za),且許多(duo)元件(jian)都需要預先進行人(ren)工調節(jie)。電氣比例(li)閥(fa)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬(shu)于(yu)連續(xu)(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi),其特點(dian)是輸(shu)出量(liang)隨輸(shu)入(ru)量(liang)的(de)(de)變化(hua)而(er)變化(hua),輸(shu)出量(liang)與(yu)輸(shu)入(ru)量(liang)之間存在一(yi)定的(de)(de)比例(li)關(guan)系。比例(li)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)有開(kai)環(huan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和閉環(huan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)之分。 意大利ATOS比例閥型(xing)號(hao)表(biao): 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 |