Characteristics of Pump and Valve Dual-Source Collaborative Driving Multi-Actuator System

doi:10.7652/xjtuxb202203001

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Characteristics of Pump and Valve Dual-Source Collaborative Driving Multi-Actuator System

更新时间：2025-07-09

- Characteristics of Pump and Valve Dual-Source Collaborative Driving Multi-Actuator System
- Vol. 56, Issue 3, Pages: 1-11(2022)
- 作者机构：
  
  太原理工大学新型传感器与智能控制教育部和山西省重点试验室,太原,030024
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202203001
  CLC： TH137
- Online First：10 March 2022，
  
  Published：2022
- 稿件说明：
移动端阅览
Characteristics of Pump and Valve Dual-Source Collaborative Driving Multi-Actuator System[J]. 2022, 56(3): 1-11.
DOI：

Characteristics of Pump and Valve Dual-Source Collaborative Driving Multi-Actuator System[J]. 2022, 56(3): 1-11. DOI： 10.7652/xjtuxb202203001.

摘要

针对工程机械等多执行器复合作业装备中阀控系统节流损失严重、泵控系统装机功率过大的问题

提出一种泵阀双源协同驱动多执行器系统。首先对不同系统能效机理进行理论分析

明确了载荷差异造成阀控系统大量节流损失的根本原因是各执行器驱动腔压力不同。在此基础上

设计了基于所提系统的极低压损控制策略。然后

借助SimulationX仿真软件

建立了37 t液压挖掘机仿真模型

通过试验验证了模型的准确性

并进一步建立了泵阀双源协同驱动和电液流量匹配系统液压挖掘机联合仿真模型。最后

分析对比动臂和铲斗空载复合动作工况下

所提系统与电液流量匹配系统的运行特性和能量特性。结果表明:与电液流量匹配系统相比

所提系统显著改善了重载执行器响应滞后现象

提升了系统运行平稳性

同时大幅降低了载荷差异造成的轻载执行器回路压力损失

整机节流损失和能耗分别降低了67.2%和39.8%。本研究可为降低多执行器复合作业装备节流损失提供全新的解决方案。

Abstract

In the multi-actuator compound operation equipment such as engineering machinery

the throttling loss of the valve-controlled system is serious and the installed power of the pump-controlled system is too large. Therefore

a pump and valve dual-source collaborative driving multi-actuator system(PVDS)is proposed. Firstly

the energy efficiency mechanism of different systems is analyzed theoretically

and it is identified that the essential cause of the large throttling loss of the valve-controlled system due to load difference is the different pressures of actuator driving chambers. Based on this

a extremely low-pressure loss control strategy based on the proposed system is designed. Then

simulation model of a 37 t excavator is established by SimulationX

and its accuracy is verified by experiments. Furthermore

co-simulation models of the hydraulic excavator with the PVDS and electro-hydraulic flow matching system are established. Finally

under the no-load condition of combined action of boom and bucket

the operation performance and energy characteristics of the proposed system and the electro-hydraulic flow matching system are analyzed and compared. The results show that compared with the electro-hydraulic flow matching system

the proposed system significantly improves the response lag of the heavy-load actuator and the stability of the system. Meanwhile

the pressure loss of the light-load actuator caused by load difference is greatly reduced

the throttling loss and energy consumption of the whole system are reduced by 67.2% and 39.8%

respectively. This research can provide a new solution to the reduction of the throttling loss of multi-actuator compound operation equipment.

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references

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