意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)(qu)動裝(zhuang)置不同。比例(li)閥的驅(qu)(qu)動裝(zhuang)置是比例(li)電磁鐵；伺服閥的驅(qu)(qu)動裝(zhuang)置是力馬達或力矩馬達； 2.性能(neng)參(can)數(shu)不同(tong)(tong)。滯(zhi)環(huan)(huan)、中(zhong)位(wei)死區、頻(pin)寬、過濾精(jing)度等特性不同(tong)(tong)，因此應(ying)用場合不同(tong)(tong)，伺(si)服閥和(he)伺(si)服比例閥主要(yao)應(ying)用在(zai)閉(bi)環(huan)(huan)控制(zhi)(zhi)系統(tong)(tong)，其它結構的比例閥主要(yao)應(ying)用在(zai)開環(huan)(huan)控系統(tong)(tong)及閉(bi)環(huan)(huan)速度控制(zhi)(zhi)系統(tong)(tong)； - 伺服閥中位沒有死區(qu)，比例閥有中位死區(qu)；
- 伺服閥(fa)的頻響(xiang)（響(xiang)應(ying)頻率）更(geng)高(gao)，可以高(gao)達200Hz左右，比例閥(fa)一般zui高(gao)幾十Hz；
- 伺(si)服閥對液(ye)壓油液(ye)的(de)要(yao)求(qiu)更高，需要(yao)精(jing)過(guo)濾(lv)才行，否(fou)則容易(yi)堵塞，比例閥要(yao)求(qiu)低(di)一(yi)些；
3.閥(fa)(fa)(fa)芯結構及加(jia)工(gong)精度不同。比(bi)例(li)(li)閥(fa)(fa)(fa)采(cai)用閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)體結構，閥(fa)(fa)(fa)體兼作(zuo)閥(fa)(fa)(fa)套。伺服(fu)閥(fa)(fa)(fa)和伺服(fu)比(bi)例(li)(li)閥(fa)(fa)(fa)采(cai)用閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)套的結構。 4.中(zhong)位機能(neng)種(zhong)類不同。比例換向閥具有(you)與普通換向閥相(xiang)似(si)的(de)中(zhong)位機能(neng)，而伺服(fu)閥中(zhong)位機能(neng)只有(you)O型（Rexroth產品(pin)的(de)E型）。 5.閥的額(e)定壓降不同(tong)。 電(dian)氣比例閥(fa)(fa)(fa)自動(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)可分成斷續控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)和(he)連續控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)。斷續控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)即開(kai)關控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)。氣動(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)系(xi)統(tong)中使(shi)用動(dong)作(zuo)頻率(lv)較(jiao)低的開(kai)關式(ON-OFF)的換(huan)向(xiang)閥(fa)(fa)(fa)來(lai)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)氣路的通斷。靠減壓閥(fa)(fa)(fa)來(lai)調節(jie)(jie)所需(xu)(xu)(xu)要(yao)的壓力，靠節(jie)(jie)流(liu)閥(fa)(fa)(fa)來(lai)調節(jie)(jie)所需(xu)(xu)(xu)要(yao)的流(liu)量。這種(zhong)傳(chuan)統(tong)的氣動(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)系(xi)統(tong)要(yao)想要(yao)有多(duo)(duo)個(ge)輸(shu)出(chu)力和(he)多(duo)(duo)個(ge)運動(dong)速度，就需(xu)(xu)(xu)要(yao)多(duo)(duo)個(ge)減壓閥(fa)(fa)(fa)、節(jie)(jie)流(liu)閥(fa)(fa)(fa)及(ji)換(huan)向(xiang)閥(fa)(fa)(fa)。這樣，不僅元件(jian)需(xu)(xu)(xu)要(yao)多(duo)(duo)，成本高，構成系(xi)統(tong)復雜，且許多(duo)(duo)元件(jian)都需(xu)(xu)(xu)要(yao)預先進行人(ren)工(gong)調節(jie)(jie)。電(dian)氣比例閥(fa)(fa)(fa)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)屬于連續控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)，其特點是輸(shu)出(chu)量隨輸(shu)入(ru)量的變化而變化，輸(shu)出(chu)量與輸(shu)入(ru)量之間存(cun)在一定的比例關系(xi)。比例控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)有開(kai)環(huan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)和(he)閉環(huan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)之分。 意大利ATOS比例閥型號表： 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 |
