纯电挖掘机高速电驱泵双变控制研究  

Research on Bivariate Control of High-Speed Electric Drive Pumps for Battery Electric Excavators

作　　者：刘浩浩 刘吉超 杨海 刘晓辉 李怀义 Liu Haohao;Liu Jichao;Yang Hai

机构地区：[1]江苏徐工工程机械研究院有限公司,江苏省徐州市221000

出　　处：《工程机械》2025年第4期53-57,I0003,共6页Construction Machinery and Equipment

摘　　要：为降低纯电挖掘机的能耗,针对纯电挖掘机高速电驱泵动力系统,设计一种对电机转速和泵排量进行协同控制的双变控制策略,在满足目标流量请求的前提下,将系统综合效率始终保持在较高的水平,同时基于预设阈值对转速、排量变化梯度进行限制,保证了控制的平稳性,使用分段PID算法对输出最优排量对应控制电流进行控制,保证了控制的精确性。为与传统变排量的控制策略进行对比,搭建高速电驱泵台架进行不同控制策略下的试验,试验结果显示:双变控制策略下实际流量响应明显快于变排量控制策略,双变策略下系统综合效率较变排量策略下系统综合效率平均提高30%左右,取得了良好的控制效果,可为后续整车高速电驱泵控制提供参考。To reduce energy consumption of battery electric excavators,a bivariate control strategy for collaborative control of the motor speed and the pump displacement is designed for the high-speed electric drive pump system of battery electric excavators.On the premise of meeting the target flow request,it always maintains the comprehensive efficiency of the system at a high level,limits the gradient of changes in the rotational speed and displacement based on the preset thresholds to ensure stability of control,and uses the segmented PID algorithm to control the control current corresponding the optimal output displacement to ensure accuracy of control.To compare with the traditional variable displacement control strategy,a high-speed electric drive pump bench is built for tests under different control strategies.The test results show that,the actual flow response under the bivariate control strategy is significantly faster than that under the variable displacement control strategy,and the comprehensive efficiency of the system under the bivariate control strategy increases by about 30%on average compared with that under the variable displacement control strategy,with a good control effect,which can provide a reference for subsequent control of the high-speed electric drive pump of the whole vehicle.

关 键 词：纯电挖掘机 高速电驱泵系统 双变控制 流量响应性 

分 类 号：F42[经济管理—产业经济]