A Review of Key Technologies for Friction Nonlinearity in an Electro-Hydraulic Servo System

Bingwei Gao; Wei Shen; Lintao Zheng; Wei Zhang; Hongjian Zhao

doi:10.3390/machines10070568

Machines (Jul 2022)

A Review of Key Technologies for Friction Nonlinearity in an Electro-Hydraulic Servo System

Bingwei Gao,
Wei Shen,
Lintao Zheng,
Wei Zhang,
Hongjian Zhao

Affiliations

Bingwei Gao: Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, College of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China
Wei Shen: Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, College of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China
Lintao Zheng: Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, College of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China
Wei Zhang: Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, College of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China
Hongjian Zhao: Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, College of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China

DOI: https://doi.org/10.3390/machines10070568
Journal volume & issue: Vol. 10, no. 7
p. 568

Abstract

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In a high-precision servo system, the nonlinear friction link is the key factor affecting the system performance. Reasonable solving of the friction link in servo systems has become a focus of current research. This paper summarizes the friction nonlinearity that affects the control performance of servo systems. First, the characteristics of friction are summarized, and the advantages and disadvantages of typical friction models in recent years are analyzed. Subsequently, existing friction model parameter identification methods are introduced and evaluated. On this basis, the development level of the friction nonlinear control strategy is analyzed from three aspects: friction model-based control, friction model-free control, and compound control. Finally, the objective advantages and disadvantages of the existing technology are summarized, and the future development direction of the friction model and selection reference for the nonlinear friction control strategy are comprehensively discussed.

Published in Machines

ISSN: 2075-1702 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mechanical engineering and machinery
Website: http://www.mdpi.com/journal/machines

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