挖掘机
液压回路
带宽遏流
繁荣
控制理论(社会学)
水力机械
流体静力平衡
工程类
累加器(密码学)
电气元件
液压蓄能器
海洋工程
汽车工程
机械工程
计算机科学
电气工程
物理
控制(管理)
人工智能
环境工程
算法
量子力学
气体压缩机
作者
Mingdong Chen,Ding Zhao
标识
DOI:10.1016/j.ymssp.2016.05.017
摘要
Considering the disadvantage of higher throttling loss for the open-circuit hydrostatic transmission at present, a novel gravitational potential energy regeneration system (GPERS) of the boom of hydraulic excavator, namely the closed-circuit GPERS, is proposed in this paper. The closed-circuit GPERS is based on a closed-circuit hydrostatic transmission and adopts a hydraulic accumulator as main energy storage element fabricated in novel configuration to recover the entire gravitational potential energy of the boom of hydraulic excavator. The matching parameter and control system design are carried out for the proposed system, and the system is modeled based on its physical attributes. Simulation and experiments are performed to validate the employed mathematical models, and then, the velocity and the pressure performance of system are analyzed. It is observed that the closed-circuit GPERS shows better velocity control of the boom and response characteristics. After that, the average working efficiency of the closed-circuit GPERS of boom is estimated under different load conditions. The results indicate that the proposed system is highly effective and that the average working efficiency in different load conditions varied from 60% to 68.2% for the experiment platform.
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