It can be used to energise the plunger cylinder if the control voltage of the servo circuit has failed.

可以在没有伺服回路的控制电压时激活活塞杆。

Designed a set of electro-hydraulic proportional system of forming hydraulic press of heteropolarity multilevel magnetic ring, established the mathematical model of the top plunger cylinder.

设计了极异方型多级磁环成形液压机的电液比例控制系统,建立了上模缸上腔的数学模型。