控制理论(社会学)
执行机构
累加器(密码学)
液压泵
流体静力平衡
水力机械
液压缸
离心泵
液压马达
高效能源利用
流离失所(心理学)
圆柱
汽车工程
定子
能量回收
变量泵
工程类
机械工程
能量(信号处理)
计算机科学
数学
物理
电气工程
叶轮
人工智能
心理学
统计
算法
心理治疗师
控制(管理)
量子力学
作者
Thales Agostini,Victor De Negri,Tatiana Minav,Matti Pietola
出处
期刊:Actuators
[MDPI AG]
日期:2020-02-25
卷期号:9 (1): 12-12
被引量:14
摘要
This paper investigates energy efficiency and dynamic behavior through simulation and experiments of a compact electro-hydrostatic actuator system (EHA) consisting of an electric motor, external gear pump/motors, hydraulic accumulator, and differential cylinder. Tests were performed in a stand-alone crane in order to validate the mathematical model. The influence and importance of a good balance between pump/motors displacement and cylinder areas ratios is discussed. The overall efficiency for the performed motion is also compared considering the capability or not of energy recovery. The results obtained demonstrate the significant gain of efficiency when working in the optimal condition and it is compared to the conventional hydraulic system using proportional valves. The proposed system presents the advantages and disadvantages when utilizing components off-the-shelf taking into account the applicability in mobile and industrial stationary machines.
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