意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)動(dong)裝置(zhi)不同。比(bi)例閥的(de)驅(qu)動(dong)裝置(zhi)是比(bi)例電磁鐵(tie)；伺(si)服閥的(de)驅(qu)動(dong)裝置(zhi)是力(li)(li)馬達或力(li)(li)矩馬達； 2.性能(neng)參數不同。滯環(huan)、中(zhong)位死區、頻寬、過濾精度(du)等(deng)特性不同，因此應(ying)用場合不同，伺(si)服閥和(he)伺(si)服比(bi)例閥主要應(ying)用在(zai)(zai)閉環(huan)控(kong)制系(xi)統(tong)(tong)，其它(ta)結構(gou)的比(bi)例閥主要應(ying)用在(zai)(zai)開環(huan)控(kong)系(xi)統(tong)(tong)及閉環(huan)速(su)度(du)控(kong)制系(xi)統(tong)(tong)； - 伺服閥中(zhong)位(wei)沒有死區，比例閥有中(zhong)位(wei)死區；
- 伺服閥的頻(pin)響（響應頻(pin)率）更(geng)高(gao)，可以高(gao)達(da)200Hz左右，比例閥一般(ban)zui高(gao)幾十Hz；
- 伺服(fu)閥對液(ye)壓油液(ye)的(de)要(yao)求(qiu)更(geng)高(gao)，需要(yao)精過濾才行，否則容(rong)易堵塞，比例閥要(yao)求(qiu)低一些；
3.閥(fa)(fa)芯(xin)(xin)結(jie)構及(ji)加(jia)工精度不同。比(bi)例閥(fa)(fa)采用(yong)(yong)閥(fa)(fa)芯(xin)(xin)+閥(fa)(fa)體結(jie)構，閥(fa)(fa)體兼(jian)作閥(fa)(fa)套(tao)。伺服閥(fa)(fa)和伺服比(bi)例閥(fa)(fa)采用(yong)(yong)閥(fa)(fa)芯(xin)(xin)+閥(fa)(fa)套(tao)的(de)結(jie)構。 4.中(zhong)位機(ji)(ji)能(neng)種類不同。比例換(huan)向(xiang)閥(fa)具有與普通換(huan)向(xiang)閥(fa)相似的(de)中(zhong)位機(ji)(ji)能(neng)，而伺服閥(fa)中(zhong)位機(ji)(ji)能(neng)只有O型（Rexroth產品的(de)E型）。 5.閥的額(e)定壓降不同。 電氣(qi)(qi)比例(li)(li)閥(fa)自動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)可分(fen)成斷續(xu)(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和(he)連續(xu)(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。斷續(xu)(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)即開關控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。氣(qi)(qi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)(tong)(tong)中使用動(dong)作頻率較低的(de)(de)開關式(ON-OFF)的(de)(de)換向閥(fa)來(lai)(lai)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)氣(qi)(qi)路的(de)(de)通斷。靠(kao)減(jian)壓(ya)閥(fa)來(lai)(lai)調(diao)(diao)節(jie)所需(xu)要(yao)的(de)(de)壓(ya)力，靠(kao)節(jie)流閥(fa)來(lai)(lai)調(diao)(diao)節(jie)所需(xu)要(yao)的(de)(de)流量(liang)。這(zhe)種傳統(tong)(tong)(tong)的(de)(de)氣(qi)(qi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)(tong)(tong)要(yao)想(xiang)要(yao)有多(duo)個(ge)(ge)輸(shu)出力和(he)多(duo)個(ge)(ge)運動(dong)速(su)度，就需(xu)要(yao)多(duo)個(ge)(ge)減(jian)壓(ya)閥(fa)、節(jie)流閥(fa)及(ji)換向閥(fa)。這(zhe)樣(yang)，不僅元(yuan)件(jian)需(xu)要(yao)多(duo)，成本(ben)高，構成系統(tong)(tong)(tong)復雜，且許多(duo)元(yuan)件(jian)都需(xu)要(yao)預先進行(xing)人工調(diao)(diao)節(jie)。電氣(qi)(qi)比例(li)(li)閥(fa)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)屬于連續(xu)(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)，其特點是輸(shu)出量(liang)隨輸(shu)入量(liang)的(de)(de)變化(hua)而變化(hua)，輸(shu)出量(liang)與(yu)輸(shu)入量(liang)之(zhi)間存在一定的(de)(de)比例(li)(li)關系。比例(li)(li)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)有開環控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和(he)閉環控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)之(zhi)分(fen)。 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 |
