Article | 13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden | Energy-Saving Design for Hydraulic Tube Bender
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Title:
Energy-Saving Design for Hydraulic Tube Bender
Author:
J. C. Renn: Department of Mechanical Engineering, National Yunlin University of Science and Technology, Douliou, Yunlin, Taiwan C. Y. Cheng: Department of Mechanical Engineering, National Yunlin University of Science and Technology, Douliou, Yunlin, Taiwan M. H. Lin: Department of Mechanical Engineering, National Yunlin University of Science and Technology, Douliou, Yunlin, Taiwan
DOI:
10.3384/ecp1392a13
Download:
Full text (pdf)
Year:
2013
Conference:
13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden
Issue:
092
Article no.:
013
Pages:
123-130
No. of pages:
8
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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Generally speaking; hydraulic control systems can be divided into two different driving concepts. The first one is the well-known valve-controlled system and the second one is the pump-controlled system. The former possesses the feature of fast dynamic response. However; the poor energy-saving performance is its major fault. On the contrary; the pump-controlled hydraulic system has the significant advantage of energy-saving which meets the current demand in modern machine design. In this paper; the simulation analysis using MatLab/SimuLink and DSHplus for a newly developed energy-saving hydraulic tube bender is conducted. Instead of the conventional fixed displacement hydraulic pump; the new hydraulic tube bender utilizes an internal gear pump with AC servomotor as its driving power source. In the new energy-saving hydraulic circuit; the use of conventional pressure relief valve and unloading valve are no longer necessary since the demanded flow-rate and pressure output can be precisely obtained by continuously changing the speed of the AC servomotor. In addition; two closed-loop control schemes using fuzzy sliding-mode controller are adopted and compared. From the simulation results; it is shown that the energy-saving performance of constant pressure control scheme is somewhat better than that of load-sensing control scheme. Furthermore; the simulation results also show that the newly developed hydraulic tube bender can save up to 42 % of energy consumption in a working cycle as compared to the conventional hydraulic tube bender

Keywords: Hydraulic Energy-Saving; Pump-Controlled System; Fluid Power; Tube Bender

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

Author:
J. C. Renn, C. Y. Cheng, M. H. Lin
Title:
Energy-Saving Design for Hydraulic Tube Bender
DOI:
http://dx.doi.org/10.3384/ecp1392a13
References:

[1] J C Renn; Position Control of A Pneumatic Servocylinder Using Fuzzy-sliding Surface Controller; Int. J. of Fluid Power; 3(3): 19-25; 2002.

[2] H E Merritt; Hydraulic Control Systems; John Wileys and Sons; Cincinnati; Ohio; 1967. ISBN 0-471-59617-5.

[3] H Murrenhoff; Systematic approach to the control of hydrostatic drives; Proc. of the Institution of Mechanical Engineers. Part I: Journal of Systems& Control Engineering; 213(I5): 333-347; 1999.

[4] M H Chiang; Y W Chien and D D Yu; Implementation of integrated control of path control and energy-saving control for hydraulic servo systems;‚ÄĚ J CSME; 24(2): 50‚Äď58; 2003.

[5] N N; Hydraulic Tube Bender; Catalogue of SOCO machinery Co.; LTD; www.soco.com.tw; 2012.

[6] N N; HES Series AC Servomotor; Catalogue of Delta Electronics; Inc.; http://www.delta.com.tw; 2012.

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

Author:
J. C. Renn, C. Y. Cheng, M. H. Lin
Title:
Energy-Saving Design for Hydraulic Tube Bender
DOI:
http://dx.doi.org/10.3384/ecp1392a13
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