华中科技大学学报（自然科学版）2025，Vol.53Issue(6)：28-36,9.DOI:10.13245/j.hust.250605
挖掘机双泵多阀协调控制系统平滑模式切换策略
Smooth mode switching strategy of dual-pump multi-valve coordinated control system for excavators
摘要
Abstract
Aiming at the problem of shock and oscillation under mode switching in independent metering control systems,a smooth mode switching strategy of dual-pump multi-valve coordinated control system was proposed for medium and large excavators.Compared with traditional mode switching strategies only based on load force detection,a mode switching criterion was established combining with load force detection and outlet valve opening.Based on the analysis of the unsteadiness in the process of mode switching,a strategy was devised to ensure the continuity of valve port signal control and enable one-way mode switching,effectively addressing the issue of frequent mode switching during control command transitions or load fluctuations.Test results of the dual-pump multi-valve coordinated control system for the 20 t excavator show that the proposed strategy guarantees no speed and pressure oscillations during the working process at various speeds,which enables seamless mode-switching while ensuring the motion control performance of the excavator.关键词
挖掘机/液压系统/泵阀协调/进出口独立调节/模式切换Key words
excavator/hydraulic system/pump valve coordination/independent metering of import and export/mode switching分类
机械工程引用本文复制引用
程敏,张鑫,侯严迪,丁孺琦..挖掘机双泵多阀协调控制系统平滑模式切换策略[J].华中科技大学学报（自然科学版）,2025,53(6):28-36,9.基金项目
国家重点研发计划资助项目(2021YFB2011901) （2021YFB2011901）
国家自然科学基金资助项目(52322503) （52322503）
重庆市研究生科研创新项目(CYB23022) （CYB23022）
工信部战略基础产品资助项目(TC220H064). （TC220H064）
