中南大学学报（自然科学版）2025，Vol.56Issue(12)：5048-5059,12.DOI:10.11817/j.issn.1672-7207.2025.12.010
基于动态流量调节的挖掘机抗流量饱和控制方法
Excavator anti-flow saturation control method based on dynamic flow regulation
摘要
Abstract
To solve the problem of poor coordination of compound action of hydraulic excavator with valve pre-compensation load sensing system during flow saturation caused by different working conditions,a new control method against flow saturation based on dynamic flow regulation was proposed.Through analyzing the flow distribution characteristics of the load-sensing system of the excavator and comprehensively considering the three flow saturation conditions of the engine speed reduction,insufficient pump displacement and the pump entering the constant power state,the anti-flow saturation controller based on dynamic flow regulation was designed.Combined with AMESim,ADAMS and MATLAB/Simulink,the electro-hydraulic co-simulation model of the excavator was established to verify the effectiveness of the control method.The results show that under three typical flow saturation conditions,this control method ensures that the flow distribution of each excavator actuator is only related to the control signal magnitude and independent of load variations,which significantly improves the coordination of the excavator composite action.Different from the traditional anti-flow saturation control method considering single factor,this method comprehensively takes into account a variety of flow saturation conditions,and provides a more comprehensive theoretical basis and method for solving the flow saturation problem of the excavator load-sensing system.关键词
液压挖掘机/负载敏感系统/抗流量饱和/多学科联合仿真/动态流量调节Key words
hydraulic excavator/load-sensing system/anti-flow saturation/multidisciplinary co-simulation/dynamic flow regulation分类
机械制造引用本文复制引用
韩煦,汪成文,赵二辉,成磊..基于动态流量调节的挖掘机抗流量饱和控制方法[J].中南大学学报（自然科学版）,2025,56(12):5048-5059,12.基金项目
国家自然科学基金资助项目(52475066) （52475066）
山西省回国留学人员科研教研项目(2024-052) （2024-052）
先进半导体光电器件与系统集成山西省重点实验室课题(2023SZKF05)(Project(52475066)supported by the National Natural Science Foundation of China （2023SZKF05）
Project(2024-052)supported by Shanxi Scholarship Council of China （2024-052）
Project(2023SZKF05)supported by the Open Program of Shanxi Key Laboratory of Advanced Semiconductor Optoelectronic Devices and Integrated Systems) （2023SZKF05）
