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Article

Novel Concept for Electro-Hydrostatic Actuators for Motion Control of Hydraulic Manipulators

Department of Engineering Sciences, University of Agder, 4879 Grimstad, Norway
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Author to whom correspondence should be addressed.
Academic Editor: Per Johansen
Energies 2021, 14(20), 6566; https://doi.org/10.3390/en14206566
Received: 31 August 2021 / Revised: 1 October 2021 / Accepted: 4 October 2021 / Published: 12 October 2021
(This article belongs to the Special Issue Intelligent Fluid Power Drive Technology)
Self-contained hydraulic cylinders have gained popularity in the recent years but have not been implemented for high power articulated hydraulic manipulators. This paper presents a novel concept for an electro-hydrostatic actuator applicable to large hydraulic manipulators. The actuator is designed and analyzed to comply with requirements such as load holding, overload handling, and differential flow compensation. The system is analyzed during four quadrant operation to investigate energy efficiency and regenerative capabilities. Numerical simulation is carried out using path control and 2DOF anti-swing of a hydraulic crane as a load case to illustrate a real world scenario. A comparison with traditional valve-controlled actuators is conducted, showing significantly improved efficiency and with similar dynamic response, as well as the possibility for regenerating energy. View Full-Text
Keywords: electro-hydrostatic actuator; pump-controlled cylinder; four-quadrant operation; passive load-holding; servomotor electro-hydrostatic actuator; pump-controlled cylinder; four-quadrant operation; passive load-holding; servomotor
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MDPI and ACS Style

Jensen, K.J.; Ebbesen, M.K.; Hansen, M.R. Novel Concept for Electro-Hydrostatic Actuators for Motion Control of Hydraulic Manipulators. Energies 2021, 14, 6566. https://doi.org/10.3390/en14206566

AMA Style

Jensen KJ, Ebbesen MK, Hansen MR. Novel Concept for Electro-Hydrostatic Actuators for Motion Control of Hydraulic Manipulators. Energies. 2021; 14(20):6566. https://doi.org/10.3390/en14206566

Chicago/Turabian Style

Jensen, Konrad J., Morten K. Ebbesen, and Michael R. Hansen. 2021. "Novel Concept for Electro-Hydrostatic Actuators for Motion Control of Hydraulic Manipulators" Energies 14, no. 20: 6566. https://doi.org/10.3390/en14206566

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