Analysis of Underlapped Symmetrically Ported Valve-Controlled Asymmetric Cylinder Drive

The valve-controlled cylinder drive system is the most common type among hydraulic applications. Nonlinear behaviour in such systems is inevitable when the valve spool is around its null position. We utilised the component linking method to investigate the nonlinearities in a Moog valve-controlled a...

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Main Authors: Huankun Wang, Man Xu, Zijian Cao
Format: Article
Language:English
Published: MDPI AG 2024-03-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/14/7/2870
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author Huankun Wang
Man Xu
Zijian Cao
author_facet Huankun Wang
Man Xu
Zijian Cao
author_sort Huankun Wang
collection DOAJ
description The valve-controlled cylinder drive system is the most common type among hydraulic applications. Nonlinear behaviour in such systems is inevitable when the valve spool is around its null position. We utilised the component linking method to investigate the nonlinearities in a Moog valve-controlled asymmetric cylinder drive system by simulation in Fortran, in which a generalised concept is introduced and validated by comparing to the experimental results. An <i>X</i> factor is proposed in the generalised concept to describe the asymmetric cylinder state, which is a constant when the cylinder is extending or retracting, but numerically calculated when the valve spool is in the underlap region. This analytical solution is approximately 200 times more computationally efficient than the numerical solution method. This paper utilises the component linking method to simulate the Moog valve-controlled asymmetric cylinder drive system in Matlab Simulink, and proposes an analytical solution for the <i>X</i> factor when the valve spool is in the underlap region. This analytical solution is approximately 200 times more computationally efficient than the numerical solution method.
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spelling doaj.art-c873cc08d29e44ab8f1821e21e5e17652024-04-12T13:15:03ZengMDPI AGApplied Sciences2076-34172024-03-01147287010.3390/app14072870Analysis of Underlapped Symmetrically Ported Valve-Controlled Asymmetric Cylinder DriveHuankun Wang0Man Xu1Zijian Cao2College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471000, ChinaCollege of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471000, ChinaCollege of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471000, ChinaThe valve-controlled cylinder drive system is the most common type among hydraulic applications. Nonlinear behaviour in such systems is inevitable when the valve spool is around its null position. We utilised the component linking method to investigate the nonlinearities in a Moog valve-controlled asymmetric cylinder drive system by simulation in Fortran, in which a generalised concept is introduced and validated by comparing to the experimental results. An <i>X</i> factor is proposed in the generalised concept to describe the asymmetric cylinder state, which is a constant when the cylinder is extending or retracting, but numerically calculated when the valve spool is in the underlap region. This analytical solution is approximately 200 times more computationally efficient than the numerical solution method. This paper utilises the component linking method to simulate the Moog valve-controlled asymmetric cylinder drive system in Matlab Simulink, and proposes an analytical solution for the <i>X</i> factor when the valve spool is in the underlap region. This analytical solution is approximately 200 times more computationally efficient than the numerical solution method.https://www.mdpi.com/2076-3417/14/7/2870Moogasymmetric cylinderanalytical solutioncomponent linking<i>X</i>-factor
spellingShingle Huankun Wang
Man Xu
Zijian Cao
Analysis of Underlapped Symmetrically Ported Valve-Controlled Asymmetric Cylinder Drive
Applied Sciences
Moog
asymmetric cylinder
analytical solution
component linking
<i>X</i>-factor
title Analysis of Underlapped Symmetrically Ported Valve-Controlled Asymmetric Cylinder Drive
title_full Analysis of Underlapped Symmetrically Ported Valve-Controlled Asymmetric Cylinder Drive
title_fullStr Analysis of Underlapped Symmetrically Ported Valve-Controlled Asymmetric Cylinder Drive
title_full_unstemmed Analysis of Underlapped Symmetrically Ported Valve-Controlled Asymmetric Cylinder Drive
title_short Analysis of Underlapped Symmetrically Ported Valve-Controlled Asymmetric Cylinder Drive
title_sort analysis of underlapped symmetrically ported valve controlled asymmetric cylinder drive
topic Moog
asymmetric cylinder
analytical solution
component linking
<i>X</i>-factor
url https://www.mdpi.com/2076-3417/14/7/2870
work_keys_str_mv AT huankunwang analysisofunderlappedsymmetricallyportedvalvecontrolledasymmetriccylinderdrive
AT manxu analysisofunderlappedsymmetricallyportedvalvecontrolledasymmetriccylinderdrive
AT zijiancao analysisofunderlappedsymmetricallyportedvalvecontrolledasymmetriccylinderdrive