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A new friction model in hybrid pump-controlled asymmetric (single-rod) cylinder drive system

journal contribution
posted on 14.08.2020 by Huankun Wang, Paul Leaney
Hybrid pump-controlled asymmetric cylinder drive systems are implemented for energy saving purposes in applications that do not require fast responses. Under low-velocity and low-pressure conditions, the friction influence in the hybrid pump-controlled system is evident. Researchers have developed various models to describe friction. These friction models are implemented based on the relative motion of the contact surfaces, and they can be categorized into static friction and dynamic friction models. For example, dynamic friction models are suitable for simulating the friction in hydraulic cylinder seals under lubrication conditions. Among the dynamic models, the LuGre model can capture almost all static and dynamic friction behaviors at the macroscopic level; for example, stiction, the Stribeck effect, and hysteresis. Thus, the LuGre model is suitable for describing the friction in hydraulic cylinders. Because the friction force in the hydraulic cylinder is mainly from the cylinder seal and seal deformation occurs under pressure due to its flexibility, the friction in a hybrid pump-controlled hydraulic system is affected by the relative motion of the contact surfaces. Therefore, to investigate factors that affect the friction other than the relative motion of the contact surfaces, the friction behaviors of a hybrid pump-controlled hydraulic system are studied. Pressure difference and acceleration terms are introduced in the LuGre friction model, and the simulated friction results of the updated LuGre model are compared with the measured experimental results to validate the new friction model.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Tribology Transactions

Pages

1 - 12

Publisher

Informa UK Limited

Version

AM (Accepted Manuscript)

Rights holder

© Society of Tribologists and Lubrication Engineers

Publisher statement

This is an Accepted Manuscript of an article published by Taylor & Francis in Tribology Transactions on 27 Jul 2020, available online: https://doi.org/10.1080/10402004.2020.1762955

Acceptance date

24/04/2020

Publication date

2020-07-27

ISSN

1040-2004

eISSN

1547-397X

Language

en

Depositor

Dr Paul Leaney Deposit date: 11 August 2020

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