Article | Proceedings of 15:th Scandinavian International Conference on Fluid Power, June 7-9, 2017, Linköping, Sweden | An Approach to Combine an Independent Metering System with an Electro-Hydraulic Flow-on-Demand Hybrid-System Link�ping University Electronic Press Conference Proceedings
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Title:
An Approach to Combine an Independent Metering System with an Electro-Hydraulic Flow-on-Demand Hybrid-System
Author:
M. Wydra: Karlsruhe Institute of Technology, Chair of Mobile Machines, Karlsruhe, Germany M. Geimer: Karlsruhe Institute of Technology, Chair of Mobile Machines, Karlsruhe, Germany B. Weiss: Weiss Mobiltechnik GmbH, Rohrdorf, Germany
DOI:
10.3384/ecp17144161
Download:
Full text (pdf)
Year:
2017
Conference:
Proceedings of 15:th Scandinavian International Conference on Fluid Power, June 7-9, 2017, Linköping, Sweden
Issue:
144
Article no.:
015
Pages:
161-170
No. of pages:
10
Publication type:
Abstract and Fulltext
Published:
2017-12-20
ISBN:
978-91-7685-369-6
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press, Linköpings universitet


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By combining an electro-hydraulic flow-on-demand system with an independent metering of the actuators in- and outlet, a higher efficiency and a better controllability compared to conventional hydraulic-mechanic load sensing systems can be reached. It also enables the integration of a hydraulic accumulator to recuperate energy due to active loads. This paper presents an alternative control strategy for this kind of hydraulic propulsion systems. Connected with the pump and during passive loads the meter-in flow controls the velocity of the actuator. Otherwise the velocity control is achieved by the meter-out flow while the oil flows into the accumulator or tank. Exemplary this system is simulated for a mobile forestry crane. Further steps are building up a test bench for optimization and validation as well as an implementation into a real machine for testing the suitability in use.



Keywords: Flow-on-demand, independent metering, control, recuperation, hybrid system

Proceedings of 15:th Scandinavian International Conference on Fluid Power, June 7-9, 2017, Linköping, Sweden

Author:
M. Wydra, M. Geimer, B. Weiss
Title:
An Approach to Combine an Independent Metering System with an Electro-Hydraulic Flow-on-Demand Hybrid-System
DOI:
http://dx.doi.org/10.3384/ecp17144161
References:
No references available

Proceedings of 15:th Scandinavian International Conference on Fluid Power, June 7-9, 2017, Linköping, Sweden

Author:
M. Wydra, M. Geimer, B. Weiss
Title:
An Approach to Combine an Independent Metering System with an Electro-Hydraulic Flow-on-Demand Hybrid-System
DOI:
http://dx.doi.org/10.3384/ecp17144161
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