基于模型设计的负流量挖掘机功率匹配控制策略  

Power Matching Control Strategy for Negative-flow Excavators Based on Model Design

作　　者：李雪伟 黄磊 李若恒 陈艳军 陈昊 Li Xuewei;Huang Lei;Li Ruoheng

机构地区：[1]湖南中联重科智能技术有限公司 [2]中联重科土方机械有限公司

出　　处：《工程机械》2024年第5期153-159,I0018,共8页Construction Machinery and Equipment

摘　　要：在工程机械行业中,挖掘机被广泛地应用在基础建设、物资开采、交通运输等行业。在作业过程中,面对工况复杂、负载不确定性等因素,极有可能造成挖掘机工作效率降低、油耗增加的情况。因此,提出一种基于发动机控制和比例电磁阀电流调节的控制策略。该策略根据不同的工作模式设定了主泵电磁阀的基础电流和目标电流,结合发动机不同的百分比负载率,以PID调节后的信号作为输入,可以有效减少发动机的转速波动。此外,通过监控挖掘机的工作状态,在停止工作时,使挖掘机处于自动怠速状态,降低挖掘机的能量损失。In the construction machinery industry,excavators are widely used in industries such as infrastructure construction,mining and transport.In the process of operation,due to factors such as complex working conditions and uncertain loads,it is very likely to cause the situations of efficiency decrease and fuel consumption increase of the excavator.Therefore,a control strategy based on engine control and proportional solenoid valve current regulation is proposed.The strategy sets the base current and target current of the main pump solenoid valve according to different working modes,combines different percentage load rates of the engine and takes the PID-adjusted signals as input to effectively reduce the rotational speed fluctuation of the engine.In addition,by monitoring the working status of the excavator,the excavator is put in an automatic idling state when it stops working,which reduces the energy loss of the excavator.

关 键 词：负流量 液压挖掘机 自动怠速 功率匹配 

分 类 号：TU621[建筑科学—建筑技术科学]