摘要
装载机是工程机械主要机型之一,面对环境压力亟待节能减排升级。当前电动装载机转向系统主要沿用传统阀控系统,存在能耗高、驾驶员劳动强度大等弊端。提出一种电动装载机闭式泵控线控转向系统构型,并利用PID进行位置伺服闭环控制。结果表明,闭式泵控线控转向系统在各工况下的液压系统效率都高于60%,在高速重载转向工况下的液压系统效率最高,为67.3%。即使忽略全液压转向系统在转角极限位置时的高压溢流损失,闭式泵控转向系统相对全液压转向系统在各转向工况下的效率也至少提高了54.3%,且具有较好的转向精度与操控性能,其转角跟踪误差能够控制在2°以内,压力波动维持在1 MPa左右,实现了电动装载机高效线控转向。
Wheel loader is one of the main types of construction machinery.In the face of environmental pressure,it is urgent to upgrade energy conservation and emission reduction.At present,the steering system of electric loader mainly adopts the traditional valve control system,which has the disadvantages of high energy consumption and high labor intensity of drivers.In this paper,a closed-circuit pump-controlled steer-by-wire system configuration of electric loader is proposed,and PID is used for position servo closed-loop control.The results show that the hydraulic system efficiency of the closed-circuit pump-controlled steer-by-wire system is higher than 60%under all working conditions,and the hydraulic system efficiency is the highest under high-speed and heavy-duty steering conditions,which is 67.3%.Even if the high-pressure overflow loss of the full hydraulic steering system at the corner limit position is not calculated,the efficiency of the closed-circuit pump-controlled steering system is at least 54.3%higher than that of the full hydraulic steering system under each steering condition,and the steer-by-wire system has better steering accuracy and control performance.The angle tracking error can be controlled within 2°,and the pressure fluctuation is maintained at about 1 MPa,which realizes the efficient steer-by-wire steering of the electric loader.
作者
陈龙
林添良
付胜杰
陈其怀
缪骋
林元正
CHEN Long;LIN Tianliang;FU Shengjie;CHEN Qihuai;MIAO Cheng;LIN Yuanzheng(College of Mechanical Engineering and Automation,Huaqiao University,Xiamen,Fujian 361021;Fujian Key Laboratory of Green Intelligent Drive and Transmission for Mobile Machinery,Xiamen,Fujian 361021)
出处
《液压与气动》
北大核心
2025年第1期30-39,共10页
Chinese Hydraulics & Pneumatics
基金
国家自然科学基金面上项目(52375054)。
关键词
电动装载机
闭式泵控系统
线控转向
PID控制
electric loader
closed-circuit pump-controlled system
steer-by-wire
PID control
作者简介
陈龙,男,1992年生,福建漳州人,博士研究生,主要从事液压线控转向、电液伺服控制技术方面的研究和工作。E-mail:xmutcal@163.com;通信作者:林添良,男,1983年生,福建龙岩人,教授,博士,主要从事绿色节能技术、工程机械智能化、机电液一体化方面的研究和工作。E-mail:ltlkxl@163.com;付胜杰,男,1981年生,山东泰安人,副教授,博士,主要从事绿色节能技术、新能源电机控制及驱动器设计方面的研究和工作。E-mail:xmshengjie@163.com;陈其怀,男,1988年生,福建莆田人,副教授,博士,主要从事电液比例节能技术、新能源电机涉及与控制方面的研究和工作。E-mail:chen.qihuai@163.com;缪骋,男,1991年生,福建宁德人,实验员,硕士,主要从事新能源工程机械系统设计与控制方面的研究和工作。E-mail:xmmiaocheng@163.com;林元正,男,1994年生,福建漳州人,博士研究生,主要从事电液节能技术、新能源工程机械动力总成技术方面的研究和工作。E-mail:lin_yuanzheng@163.com。
