[1]迟英姿,许 凌,张 蓉.新型混合动力液压挖掘机的能量再生系统研究[J].机械与电子,2018,(08):7-11.
　CHI Yingzi,XU Ling,ZHANG Rong.Research on Energy Regeneration System of New Hybrid Hydraulic Excavator[J].Machinery & Electronics,2018,(08):7-11.
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新型混合动力液压挖掘机的能量再生系统研究
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《机械与电子》[ISSN:1001-2257/CN:52-1052/TH]

卷:
期数:
2018年08期
页码:
7-11
栏目:
设计与研究
出版日期:
2018-08-24

文章信息/Info

Title:
Research on Energy Regeneration System of New Hybrid Hydraulic Excavator
文章编号:
1001-2257(2018)08-0007-05
作者:
迟英姿; 许 凌; 张 蓉
(南京工业大学浦江学院,江苏 南京 211134)
Author(s):
CHI Yingzi;  XU Ling;  ZHANG Rong
(Nanjing Techuniversity Pujiang Institute, Nanjing 211134, China)
关键词:
混合动力系统;  挖掘机;  能量再生系统
Keywords:
hybrid power system;  excavator;  energy regeneration system
分类号:
TU621
文献标志码:
A
摘要:
尽管在混合动力液压挖掘机中采用液压马达和发电机的传统能量再生系统(ERS)能够再生部分能量,但对要求其拥有大功率的电机和发电动机且再生能量的时间较短。结合电动液压蓄能器的优点,分析了新型电动助力转向器的结构,并提出了一种液压蓄能器工作压强设定方法。为了避免额外能耗、噪声和冲击压强,给出了一种两级压强阈值约束方法,介绍了动臂下降时控制臂架速度,以及臂架停止下落时回收效率的控制策略,建立了具有ERS的混合动力挖掘机实验平台,研究了ERS对能量转换效率和控制性能的影响。实验结果表明,所提出的ERS比传统的ERS具有更好的动臂速度控制性能,当动臂下降时,总势能的45%可以再生,并且发电机和液压马达的功率水平可以降低60%。
Abstract:
The traditional energy regeneration system(ERS)employing a hydraulic motor and a generator in a hybrid hydraulic excavator is capable of regenerating part of the energy, however, it requires the motor and generator with high power to regenerate energy in a short time. The paper analyzes the advantages of the electro-hydraulic accumulator as well as the structure of the new electric power steering gear, based on which, it proposes a hydraulic pressure accumulator working pressure setting method. In the experiment, in order to avoid additional energy consumption, noise and impact pressure, a two-stage pressure threshold constraining method was firstly presented, and then the strategy of controlling the boom speed and the recovery efficiency of the boom in the course of descending was introduced. Additionally, a hybrid excavator test platform with ERS was established to study the effects of ERS on energy conversion efficiency and control performance. The experimental results show that the proposed ERS has better boom speed control performance than the traditional one. When the boom is lowered, 45% of the total potential energy can be regenerated, while the power level of the generator and the hydraulic motor can be reduced by 60%.

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备注/Memo

备注/Memo:
收稿日期:2018-05-17
作者简介:迟英姿(1983-),女,山东栖霞人,硕士,讲师,研究方向为液压与控制技术; 许 凌(1977-),女,江苏南京人,硕士,讲师,研究方向为电子控制技术; 张 蓉(1977-),女,山东诸城人,讲师,研究方向为机械检测与维修。
更新日期/Last Update: 2018-08-24