Article(id=1207658079492088614, tenantId=1146029695717560320, journalId=1205116883411038211, issueId=1207658076900008717, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1765857723353, onlineDateStr=2025-12-16, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1765857723353, onlineIssueDateStr=2025-12-16, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1765857723353, creator=13701087609, updateTime=1765857723353, updator=13701087609, issue=Issue{id=1207658076900008717, tenantId=1146029695717560320, journalId=1205116883411038211, year='2025', volume='23', issue='2', pageStart='189', pageEnd='376', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1765857722735, creator=13701087609, updateTime=1765862348176, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1207677477451833566, tenantId=1146029695717560320, journalId=1205116883411038211, issueId=1207658076900008717, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1207677477451833567, tenantId=1146029695717560320, journalId=1205116883411038211, issueId=1207658076900008717, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=288, endPage=291, ext={EN=ArticleExt(id=1207658079836021550, articleId=1207658079492088614, tenantId=1146029695717560320, journalId=1205116883411038211, language=EN, title=Design and performance test of load sensing system for excavator pump drive valve control, columnId=1207658079282373410, journalTitle=Chinese Journal of Construction Machinery, columnName=Design Manufacture and Quality Control, runingTitle=null, highlight=null, articleAbstract=

In order to improve the operating efficiency of excavator hydraulic system, a pump-driven valve-controlled load sensing system was designed. Pressure sensors are installed at the inlet and outlet of the multi-way valve respectively to perform real-time pressure feedback instead of the pressure compensation valve of the load sensitive system to achieve pressure compensation, and dynamically adjust the position of the main valve core and the swash plate swing angle of the electro-hydraulic proportional pump to drive the action of the hydraulic cylinder. The valve-controlled cylinder system in the pump drive valve control system is analyzed theoretically and the mathematical model is established. The experimental platform is designed with proportional valve test bench, BODAS controller and other electronic control and acquisition components, and the principle test of pump drive valve control is carried out, which verifies the correctness of the simulation model and pump drive valve control principle. The results show that when the system is in the pump drive valve control program, the output flow rate changes abruptly with the load change of step rise under different pressure differences. With the continuous increase of load pressure, the flow mutation becomes larger and larger, and the error between the output flow and the set flow also increases.

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为了提高挖掘机液压系统运行效率，设计一种泵驱阀控负载敏感系统。在多路阀进出口分别安装压力传感器，进行实时压力反馈代替负载敏感系统的压力补偿阀实现压力补偿，动态调整主阀芯的位置以及电液比例泵的斜盘摆角，驱动液压缸的动作。对泵驱阀控控制系统中的阀控缸系统进行理论分析以及建立控制模型。利用比例阀试验台、BODAS控制器等电控及采集元件进行试验平台设计，进行泵驱阀控原理验证，验证仿真模型以及泵驱阀控控制原理的正确性。研究结果表明：在系统处于泵驱阀控程序时，在不同压差的情况下输出流量随着阶梯上升的负载变化而发生突变。随着负载压力的不断提高，流量突变也变得越来越大，输出流量与设定流量之间的误差也随之增大。

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徐国玉（1972—），男，高级工程师。E-mail：atq13836522684@126.com

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徐国玉（1972—），男，高级工程师。E-mail：atq13836522684@126.com

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