Study on Electro Hydraulic Force Servo System Considering Spool Friction and Cylinder Piston Friction Nonlinear

DOI

10.2991/eia-17.2017.22How to use a DOI?

Keywords

electro hydraulic force servo system; time variant nonlinear cavity; spool friction; cylinder piston friction; valve orifice flow nonlinearity; bond graph model

Abstract

In order to give full play to the performance of electro hydraulic force servo system in engineering applications, especially its good dynamic performance, the electro hydraulic force servo system and its bond graph model built process are analyzed. In this course, aiming at the time varying nonlinear characteristics of the hydraulic cylinder cavity with the displacement of the piston rod, the nonlinear characteristics of friction in the system such as spool friction and cylinder piston friction, valve orifice flow nonlinearity etc. these actual existence difficult building model characteristic in theoretical research and practical application, we play the advantage of bond graph theory that can contain multiple nonlinearities, that is applied to the simulation of nonlinear systems, and that can be used to establish the system model based on the direction of power flow in the system. Then the bond graph model of electro hydraulic force servo system is established, and the correctness of the new model is verified by simulation research, this study also has a good reference for other related research.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jianying LI
AU  - Zhongqiang ZHAO
AU  - Yanwei WANG
AU  - Guihua HAN
AU  - Shiming LI
AU  - Fatang DONG
PY  - 2017/07
DA  - 2017/07
TI  - Study on Electro Hydraulic Force Servo System Considering Spool Friction and Cylinder Piston Friction Nonlinear
BT  - Proceedings of the 2017 International Conference on Electronic Industry and Automation (EIA 2017)
PB  - Atlantis Press
SP  - 99
EP  - 104
SN  - 1951-6851
UR  - https://doi.org/10.2991/eia-17.2017.22
DO  - 10.2991/eia-17.2017.22
ID  - LI2017/07
ER  -