Article | 13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden | Contribution on control strategies of flow-on-demand hydraulic circuits
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Title:
Contribution on control strategies of flow-on-demand hydraulic circuits
Author:
Martin Scherer: Karlsruhe Institute of Technology, Chair of Mobile Machines, Karlsruhe, Germany Marcus Geimer: Karlsruhe Institute of Technology, Chair of Mobile Machines, Karlsruhe, Germany B. Weiss: Karlsruhe Institute of Technology, Chair of Mobile Machines, Karlsruhe, Germany
DOI:
10.3384/ecp1392a53
Download:
Full text (pdf)
Year:
2013
Conference:
13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden
Issue:
092
Article no.:
053
Pages:
531-540
No. of pages:
10
Publication type:
Abstract and Fulltext
Published:
2013-09-09
ISBN:
978-91-7519-572-8
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press; Linköpings universitet


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The development of an innovative flow-on-demand electrohydraulic system for mobile forestry cranes is described in the present paper. To overcome functional principle related weaknesses of conventional hydraulic-mechanical Load-Sensing systems; this work breaks up the control pressure difference related dependence of the delivered oil flow. Rather the swivelling angle of the displacement pump is calculated by summing up the single consumer oil flows corresponding to the velocity requests of the machine operator. For the electrohydraulic spool valves; several advanced control strategy concepts are discussed; each of which leading to an energy efficient artificial but controlled undersupply. The energy saving potentials are derived from a characteristic forestry crane duty cycle via dynamic simulation methods. Further on; the system shall be set up in a prototype crane to validate simulation results and to pave the way to the market by demonstrating the system performance

Keywords: Flow-on-demand; flow control; Load-Sensing; electrohydraulic; forestry crane; dynamic simulation; control strategy; energy efficiency; operability

13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden

Author:
Martin Scherer, Marcus Geimer, B. Weiss
Title:
Contribution on control strategies of flow-on-demand hydraulic circuits
DOI:
http://dx.doi.org/10.3384/ecp1392a53
References:

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13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden

Author:
Martin Scherer, Marcus Geimer, B. Weiss
Title:
Contribution on control strategies of flow-on-demand hydraulic circuits
DOI:
http://dx.doi.org/10.3384/ecp1392a53
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