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Effect of energy recovery on efficiency in electro-hydrostatic closed system for differential actuator

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Effect of energy recovery on efficiency in electro-hydrostatic closed system for differential actuator. / Agostini, Thales; Negri, Victor De; Minav, Tatiana; Pietola, Matti.

In: Actuators, Vol. 9, No. 1, 12, 01.03.2020.

Research output: Contribution to journalArticleScientificpeer-review

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Agostini, Thales ; Negri, Victor De ; Minav, Tatiana ; Pietola, Matti. / Effect of energy recovery on efficiency in electro-hydrostatic closed system for differential actuator. In: Actuators. 2020 ; Vol. 9, No. 1.

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@article{42fd623ddd7b4f8ca54bc1e3f7311afe,
title = "Effect of energy recovery on efficiency in electro-hydrostatic closed system for differential actuator",
abstract = "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.",
keywords = "Differential cylinder, Efficiency, Electro-hydrostatic actuator (EHA), Simulation",
author = "Thales Agostini and Negri, {Victor De} and Tatiana Minav and Matti Pietola",
year = "2020",
month = "3",
day = "1",
doi = "10.3390/act9010012",
language = "English",
volume = "9",
journal = "Actuators",
issn = "2076-0825",
publisher = "MDPI",
number = "1",

}

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TY - JOUR

T1 - Effect of energy recovery on efficiency in electro-hydrostatic closed system for differential actuator

AU - Agostini, Thales

AU - Negri, Victor De

AU - Minav, Tatiana

AU - Pietola, Matti

PY - 2020/3/1

Y1 - 2020/3/1

N2 - 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.

AB - 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.

KW - Differential cylinder

KW - Efficiency

KW - Electro-hydrostatic actuator (EHA)

KW - Simulation

U2 - 10.3390/act9010012

DO - 10.3390/act9010012

M3 - Article

VL - 9

JO - Actuators

JF - Actuators

SN - 2076-0825

IS - 1

M1 - 12

ER -