Title:Research Progress on Nonlinear Modeling of Electro-Hydraulic Servo Systems and Innovative Applications of Control Strategies
Volume: 19
Issue: 7
Author(s): Jianying LI*, Donglai Li, Shuxin Chen and Wang Rong
Affiliation:
- School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin, 150080, P.R.
China
- Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University
of Science and Technology, Harbin, 150080, P.R. China
Keywords:
Electro-hydraulic servo systems, nonlinear modeling, uncertainty in model parameters, friction nonlinearity, control strategies, innovative applications.
Abstract: In various specific application domains, electro-hydraulic servo systems are widely
adopted due to their high power-to-volume ratio, superior dynamic response performance, and extremely
high control accuracy. However, the inevitable presence of nonlinear factors in the system
poses a series of challenges for precise mathematical modeling and the design and application of
different forms of control strategies. This article aims to explore how various control strategies are
specifically implemented to address the nonlinear characteristics of electro-hydraulic servo systems,
building upon the research progress in modeling these systems considering nonlinear factors. Subsequently,
the article summarizes their innovative applications in electro-hydraulic servo systems.
Simultaneously, relevant patents and technologies were reviewed and summarized. The patent paper
provides a detailed comparison and analysis of various nonlinear modeling methods, with a particular
focus on the significance of neural networks and fuzzy logic control in enhancing the performance
of electro-hydraulic servo systems. The article reveals significant advancements in modern
control strategies in dealing with uncertainties and disturbances within the system, offering new perspectives
and ideas for improving system efficiency and achieving energy resource conservation with
technological progress. The review provides a series of practical recommendations aimed at optimizing
the performance of electro-hydraulic servo systems. Despite progress in multiple research endeavors,
future research should focus on further enhancing system performance and applying these
strategies to a broader range of scenarios.