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Modelling and energy efficiency analysis of a hybrid pump-controlled asymmetric (single-rod) cylinder drive system

journal contribution
posted on 22.01.2020 by Huankun Wang, Paul Leaney
A conventional valve-controlled cylinder drive system is not energy efficient, and a pump-controlled cylinder system can be unstable in some particular conditions. For drive systems not requiring fast response, a hybrid pump-controlled system, that combines the advantages of both valve and pump-controlled systems, is proposed. As nonlinear behaviours are inevitable in most asymmetric cylinder drive systems, the hybrid pump-controlled system also suffers from such problems, and extra nonlinear behaviours are identified, for example, stall when the cylinder change its direction of motion. A simulation model of the hybrid pump-controlled asymmetric cylinder drive system is developed and used to investigate the system’s simulation behaviours which are analysed and compared with the experimental test results. The energy efficiency of the hybrid pump-controlled system is compared with a comparable valve-controlled hydraulic system with the same hydraulic cylinder sizing. The outcome is to demonstrate the advantage of the hybrid pump-controlled system in energy-saving aspect, and the efficiency of the hybrid system is up to five times more than a conventional hydraulic system. Suggestions are given to improve the performance and stability of the hybrid pump-controlled system.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

International Journal of Hydromechatronics

Volume

3

Issue

1

Pages

1 - 25

Publisher

Inderscience

Version

AM (Accepted Manuscript)

Rights holder

© Inderscience Enterprises Ltd.

Publisher statement

This paper was accepted for publication in the journal International Journal of Hydromechatronics and the definitive published version is available at https://doi.org/10.1504/IJHM.2020.105501.

Acceptance date

20/12/2019

Publication date

2020-02-26

Copyright date

2020

ISSN

2515-0464

eISSN

2515-0472

Language

en

Depositor

Dr Paul Leaney. Deposit date: 20 January 2020

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