Enhanced energy efficiency of industrial application by direct driven hydraulic unit
Open accessAbstract
Direct Driven Hydraulic (DDH) systems, which are characterized by a closed circuit type and a speed-controlled pump, offer a possibility of reaching higher energy efficiencies compared to the traditional open circuit type valve-controlled systems, and simultaneously offering high accuracy and dynamics. This study presents experimental results gained with a DDH system applied to an industrial position control application. The results include the system behavior regarding the accuracy of position control, pressures, power, and energy consumption with three different system structures: basic DDH, load- compensated DDH and load-compensated and damped DDH. It was found that compared to valve-controlled hydraulics, DDH system offered potential for significant energy savings, especially if combined with hydraulic load compensation. However, without damping, the motion involved marked vibrations in the end of the stroke. Vibrations were avoided by introducing damping, but at the cost of reduced energy efficiency.
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The state-of-the-art in this field does not offer a general approach to increasing the efficiency of a system driven by a hydraulic actuator.
“The state-of-the-art in this field does not offer a general approach to increasing the efficiency of a system driven by a hydraulic actuator.”
From A systematic management and control methodology for high energy saving in applications equipped with hydraulic servo-axes (2024) · cites this paper as Koitto et al. (2018)
The Introduction describes existing efficiency-improving approaches and presents a DDH solution for a specific stationary industrial application. Neither it nor the Discussion assesses whether the state of the art offers a general approach for systems driven by hydraulic actuators. Searches for “general approach” and “state of the art” found no passage establishing that absence. (LLM, conf=0.72)
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Research works printed but not linked: 11
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- Tašner, T., Les, K., Tič, V., Lovrec, D., Energy efficiency of different electrohydraulic drives, 9th International Fluid Power Conference, 9. IFK, March 24-26, 2014, Aachen, Germany. ISBN 978-3-9816480-2-7.
- Pietrzyk, T., Roth, D., Schmitz, K., Jacobs, G., Design study of a high speed power unit for electro hydraulic actuators (EHA) in mobile applications, 11th International Fluid Power Conference, 11. IFK, March 19-21, 2018, Aachen, Germany.
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- Willkomm, J., Wahler, M., Weber, J., Model Predictive Control of Speed-Variable Variable-Displacement Pumps to Optimize Energy Efficiency, 9th International Fluid Power Conference, 9. IFK, March 24-26, 2014, Aachen, Germany. ISBN 978-3-9816480-0-3.
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- Koitto, T., Kauranne, H., Calonius, O., Minav, T., Pietola, M., Experimental Investigation of a Directly Driven Hydraulic Unit in an Industrial Application. 9th International Fluid Power Conference, 11. IFK, March 19-21, 2018, Aachen, Germany.
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Cited by
Sorted by citations
Righettini, P., Strada, R., Tiboni, M., Cortinovis, F., & Santinelli, J. (2024) · Control Engineering Practice · doi:10.1016/j.conengprac.2024.105847 · Cited by 15 · see citing works
- Authors
- Koitto, T., Calonius, O., Kauranne, H., Minav, T., & Pietola, M.
- Affiliations
- Aalto University (FI)
- Venue
- 2018 Global Fluid Power Society PhD Symposium (GFPS)
- Publisher
- IEEE
- Published
- 2018-07
- Pages
- 1-6
- OpenAlex
- W2893395775
- Cited by
- 8
- References
- 0
- Citations by year
- 2026: 2 · 2025: 1 · 2024: 2 · 2023: 1 · 2020: 1 · 2019: 1
- FWCI
- 1.35
- Type
- conference paper
- Language
- en
- Open access
- green
- research.aalto.fi
- Licence
- other-oa
- Locations
- Global Fluid Power Society PhD Symposium (GFPS) (publishedVersion)
- Aaltodoc (Aalto University) (submittedVersion, other-oa)
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Hydraulic and Pneumatic Systems
- Physical Sciences › Engineering › Mechanical Engineering › Control Systems in Engineering
- Physical Sciences › Engineering › Computational Mechanics › Fluid dynamics and aerodynamics studies
- Keywords
- energy efficiency, load compensation, hydraulic damping, position control, vibration suppression, energy consumption
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