Study on the Characteristics of Electro Hydraulic Force Servo System with Friction and its Compensation

DOI

10.2991/icmia-17.2017.87How to use a DOI?

Keywords

Electro hydraulic force servo system, Friction force, Compensation, Nonlinear factors, Parameter variation, The system self compensation controller, Experimental research

Abstract

The purpose of this paper is to analyze the characteristics of electro hydraulic force servo system, at the same time, considering the serious disturbance of the friction force in the electro hydraulic force servo system, the nonlinear factors in the controlled object are analyzed, then we consider that the fact is the problem that the range of parameter variation is large and the model is difficult to be precise. In this study, the classical control theory and linear dynamics theory are used to analyze the system; meanwhile, the nonlinear dynamic theory is adopted to solve the structure and parameters of nonlinear dynamics problems of electric hydraulic force servo system. In this study, we focus on the influence law of nonlinear friction on the dynamic characteristics of electro hydraulic force servo system, and reveal deeply the typical nonlinear dynamic behavior of the system. Finally, we design the system self compensation controller,and it can effectively compensate the considering problem of system friction disturbance. After observing the external friction force of the system, we use the system self compensation controller, to carry out the dynamic compensation for it. At the same time, through the theoretical analysis and experimental study, the suppression of the friction force disturbance by the system self compensation controller in the electro hydraulic force servo system is studied.

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  - Shiming Li
AU  - Fatang Dong
AU  - Bingwei Gao
PY  - 2017/06
DA  - 2017/06
TI  - Study on the Characteristics of Electro Hydraulic Force Servo System with Friction and its Compensation
BT  - Proceedings of the 2017 6th International Conference on Measurement, Instrumentation and Automation (ICMIA 2017)
PB  - Atlantis Press
SP  - 477
EP  - 485
SN  - 1951-6851
UR  - https://doi.org/10.2991/icmia-17.2017.87
DO  - 10.2991/icmia-17.2017.87
ID  - Li2017/06
ER  -