KFDG4V333C20NZMU1H720比例閥現(xiàn)貨

VICKERS威格士比例閥主要用在電氣液壓伺服系統(tǒng)中作為執(zhí)行元件(見(jiàn)液壓伺服系統(tǒng))。在伺服系統(tǒng)中，液壓執(zhí)行機(jī)構(gòu)同電氣及氣動(dòng)執(zhí)行機(jī)構(gòu)相比，具有快速性好、單位重量輸出功率大、傳動(dòng)平穩(wěn)、抗干擾能力強(qiáng)等特點(diǎn)。另一方面，在伺服系統(tǒng)中傳遞信號(hào)和校正特性時(shí)多用電氣元件。因此，現(xiàn)代高性能的伺服系統(tǒng)也都采用電液方式，伺服閥就是這種系統(tǒng)的必需元件。

1.驅(qū)動(dòng)裝置不同。

比例閥的驅(qū)動(dòng)裝置是比例電磁鐵;伺服閥的驅(qū)動(dòng)裝置是力馬達(dá)或力矩馬達(dá);

美國(guó)VICKERS威格士比例閥/比例閥的使用說(shuō)明

2.性能參數(shù)不同。

滯環(huán)、中位死區(qū)、頻寬、過(guò)濾精度等特性不同，

因此應(yīng)用場(chǎng)合不同，伺服閥和伺服比例閥主要應(yīng)用在閉環(huán)控制系統(tǒng),

其它結(jié)構(gòu)的比例閥主要應(yīng)用在開(kāi)環(huán)控系統(tǒng)及閉環(huán)速度控制系統(tǒng);

2.1伺服閥中位沒(méi)有死區(qū),比例閥有中位死區(qū);

2.2伺服閥的頻響(響應(yīng)頻率)更高，可以高達(dá)200Hz左右，比例閥-般高幾十Hz;

2.3伺服閥對(duì)液壓油液的要求更高,需要精過(guò)濾才行

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KFDG4V333C20NZMU1H720比例閥現(xiàn)貨