摘要
针对目前液压挖掘机上常用的负流量控制系统的不足,提出了一种负流量负荷传感控制策略,并应用于一台试验型液压挖掘机器人上。控制策略的原理是在负流量控制的基础上,使旁路回油设定压力随外负载的变化而变化,在减小多路阀旁路回油节流损失的同时,提高了系统的操纵性。应用结果表明,效果良好。
The principle and shortage of a negative control system, which is widely used in hydraulic excavator at present, were analyzed, and a new method called 'negative load sensing control system' was proposed. This system was successfully used in an experimental excavating robot. The principle of this method is based on the common negative flow control system, and its bypass pressure of the valve is controlled according to the max load pressure of the cylinders. With this method, the pressure reduction of valve metering was reduced and the controllability of system was improved.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2005年第7期111-113,共3页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家"863"高技术研究发展计划资助项目(项目编号:2001AA422130)
关键词
液压式挖掘机
负流量控制
控制方法
Hydraulic excavator, Negative flow control, Control methods
