意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)(qu)(qu)動裝置不同。比例閥的(de)驅(qu)(qu)(qu)動裝置是(shi)比例電(dian)磁鐵；伺服閥的(de)驅(qu)(qu)(qu)動裝置是(shi)力(li)馬達或(huo)力(li)矩馬達； 2.性能參數不同。滯環、中位死區、頻寬、過濾精度等特性不同，因此應用(yong)場合不同，伺服(fu)閥(fa)和伺服(fu)比(bi)例閥(fa)主要應用(yong)在閉(bi)(bi)環控制系統，其(qi)它(ta)結(jie)構的比(bi)例閥(fa)主要應用(yong)在開(kai)環控系統及閉(bi)(bi)環速度控制系統； - 伺服閥(fa)中(zhong)(zhong)位(wei)(wei)沒有死區，比例閥(fa)有中(zhong)(zhong)位(wei)(wei)死區；
- 伺服閥(fa)的(de)頻(pin)響(xiang)（響(xiang)應頻(pin)率）更高，可以高達200Hz左(zuo)右，比例(li)閥(fa)一般zui高幾十Hz；
- 伺服閥(fa)對液壓油液的要求更高，需要精過(guo)濾才行(xing)，否則容(rong)易堵塞，比例閥(fa)要求低一些；
3.閥芯結(jie)構(gou)及加工(gong)精度不(bu)同。比例閥采(cai)用閥芯+閥體結(jie)構(gou)，閥體兼作閥套(tao)。伺服閥和伺服比例閥采(cai)用閥芯+閥套(tao)的結(jie)構(gou)。 4.中(zhong)(zhong)位(wei)機能(neng)(neng)種類不同。比(bi)例換向(xiang)閥具有與普通換向(xiang)閥相似的中(zhong)(zhong)位(wei)機能(neng)(neng)，而伺服(fu)閥中(zhong)(zhong)位(wei)機能(neng)(neng)只有O型（Rexroth產品的E型）。 5.閥的額(e)定壓降(jiang)不同。 電(dian)氣比(bi)例閥(fa)(fa)自動(dong)(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)可(ke)分(fen)成(cheng)斷(duan)續控(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)連續控(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷(duan)續控(kong)(kong)(kong)制(zhi)(zhi)(zhi)即開關控(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣動(dong)(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)系統(tong)中(zhong)使用(yong)動(dong)(dong)作頻率較低的(de)開關式(shi)(ON-OFF)的(de)換(huan)向(xiang)(xiang)閥(fa)(fa)來(lai)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣路的(de)通斷(duan)。靠(kao)減壓閥(fa)(fa)來(lai)調節(jie)(jie)(jie)所需(xu)要(yao)(yao)的(de)壓力，靠(kao)節(jie)(jie)(jie)流閥(fa)(fa)來(lai)調節(jie)(jie)(jie)所需(xu)要(yao)(yao)的(de)流量(liang)(liang)。這(zhe)(zhe)種傳統(tong)的(de)氣動(dong)(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)系統(tong)要(yao)(yao)想要(yao)(yao)有多(duo)個(ge)輸出力和(he)多(duo)個(ge)運動(dong)(dong)速度，就需(xu)要(yao)(yao)多(duo)個(ge)減壓閥(fa)(fa)、節(jie)(jie)(jie)流閥(fa)(fa)及(ji)換(huan)向(xiang)(xiang)閥(fa)(fa)。這(zhe)(zhe)樣，不僅元件(jian)需(xu)要(yao)(yao)多(duo)，成(cheng)本高(gao)，構成(cheng)系統(tong)復雜，且許(xu)多(duo)元件(jian)都需(xu)要(yao)(yao)預先進行(xing)人工調節(jie)(jie)(jie)。電(dian)氣比(bi)例閥(fa)(fa)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬于連續控(kong)(kong)(kong)制(zhi)(zhi)(zhi)，其特點是輸出量(liang)(liang)隨(sui)輸入量(liang)(liang)的(de)變(bian)化而(er)變(bian)化，輸出量(liang)(liang)與輸入量(liang)(liang)之間存在一定的(de)比(bi)例關系。比(bi)例控(kong)(kong)(kong)制(zhi)(zhi)(zhi)有開環(huan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)閉環(huan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)之分(fen)。 意大利ATOS比例閥型(xing)號表(biao)： LIMZA-A-1/180/M 20
LIMZA-A-3/180/M 40
LIMZO-A-3/210
LIMZO-A-4/210
LIMZO-A-5/315/P 30
LIMZO-AE-4/315 10
LIMZO-TER-4/210 50
LIMZO-TER-4/210/I
LIQV-2 20
LIQV-2/K
LIQZO-A-252S4
LIQZO-L-252L4 50
LIQZO-L-322L4 50
LIQZO-LE-402L4 50
LIQZO-LE-502L4 50
LIQZO-LE-632L4 51
LIQZO-T-252L4
LIQZO-T-252L4 50 /PE
LIQZO-T-322L4 50
LIQZO-T-402L4
LIQZO-TE-322L4 50
LIRA-1/100 20
LIRA-1/210 20
LIRA-2/210/V 20
LIRA-3/100
LIRA-4/210/V 11
LIRZO-A-1/210
QVHZO-A-06/12 20
QVHZO-A-06/18
QVHZO-A-06/3
QVHZO-A-06/36
QVHZO-A-06/45
QVHZO-AE-06/3/I 10
QVHZO-AE-06/45/I
QVHZO-T-06/12 31
QVHZO-T-06/3 31/WG
QVHZO-TE-06/18 40
QVHZO-TE-06/18/I 40
QVHZO-TE-06/3 40
QVKMZOR-A-10/90/210/18
QVKZOR-A-10/65
QVKZOR-AE-10/90 10
QVKZOR-AES-BC-10/65 10? |
