Article | 13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden | Cylinder Pressures in a Position Controlled System With Separate Meter-in and Meter-out Link�ping University Electronic Press Conference Proceedings
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Title:
Cylinder Pressures in a Position Controlled System With Separate Meter-in and Meter-out
Author:
Gerhard Ruth: Department for Product Development, University of Leoben, Leoben, Austria Emil Zæv: Faculty of Mechanical Engineering, Ss.Cyril and Methodius University in Skopje, Skopje, Macedonia
DOI:
10.3384/ecp1392a25
Download:
Full text (pdf)
Year:
2013
Conference:
13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden
Issue:
092
Article no.:
025
Pages:
251-259
No. of pages:
9
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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Hydraulic servo system driven with separate meter-in and meter-out valves provide more flexibility with respect to energy efficiency and dynamic properties. In the current problem the operation of such a configuration involves to keep a desired position constant; while an external load force is applied. The position control cannot compensate for fast load fluctuations beyond a certain frequency limit. For this case it can be desired to adjust the static pressures in the cylinder chambers to defined values. The paper describes how to influence this pressures giving weights to the control signals for both moving directions for each valve. With the help of a simulation model the design results are verified. Higher pressure levels decrease the danger of cavitation and inhibit lowering the bulk modulus of the oil volume. The asymmetric control of the valves even lead to better energy efficiency during position control.

Keywords: Servo control; smismo; energy efficieny

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

Author:
Gerhard Ruth, Emil Zæv
Title:
Cylinder Pressures in a Position Controlled System With Separate Meter-in and Meter-out
DOI:
http://dx.doi.org/10.3384/ecp1392a25
References:

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

Author:
Gerhard Ruth, Emil Zæv
Title:
Cylinder Pressures in a Position Controlled System With Separate Meter-in and Meter-out
DOI:
http://dx.doi.org/10.3384/ecp1392a25
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