专利内容由知识产权出版社提供
专利名称：HYDRAULIC CONTROL SYSTEM FOR
CONSTRUCTION MACHINE
发明人：Ryouhei YAMASHITA,Shinya IMURA申请号：US15375199申请日：20161212
公开号：US20170183842A1公开日：20170629
专利附图：
摘要：A hydraulic control system for a construction machine has a hydraulic actuatorthat drives an arm, a meter-out channel through which hydraulic fluid discharged fromthe hydraulic actuator flows, a variable restrictor provided in the meter-out channel, an
operating device, and a controller that controls an opening area of the variable restrictor.A posture calculation unit calculates an angle made by the arm with respect to ahorizontal direction, a meter-out opening area calculation unit calculates the openingarea of the variable restrictor based on the angle made by the arm with respect to thehorizontal direction and a time rate of change of the angle, and a meter-out control unitoutputs a command signal to a solenoid valve used for adjusting the opening area of thevariable restrictor, based on the opening area of the variable restrictor calculated by themeter-out opening area calculation unit.
申请人：HITACHI CONSTRUCTION MACHINERY CO., LTD.
地址：Tokyo JP
国籍：JP
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