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yxc111
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樓主  發(fā)表于: 2010-10-08 16:50
問(wèn)下各位高手 變頻，伺服放大器，這里面提到的開(kāi)環(huán) 閉環(huán) 是什么意思啊
qinchenglim
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1樓  發(fā)表于: 2010-10-08 20:48
開(kāi)環(huán)控制是沒(méi)有反饋的控制方法,比如 步進(jìn)驅動(dòng)器+步進(jìn)馬達,
閉環(huán)控制是有反饋的控制方法,比如私服驅動(dòng)器+伺服馬達
一般來(lái)說(shuō)閉環(huán)控制的精度要高于開(kāi)環(huán)控制的精度,現在高精度位置控制大都用伺服系統組成的閉環(huán)控制
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