Robust Adaptive Parameter Estimation and Tracking Control for Hydraulic Servo Systems

2019 ◽  
Author(s):  
Yu Dong ◽  
Jing Na ◽  
Shubo Wang ◽  
Guanbin Gao ◽  
Haoran He
Keyword(s):  
Parameter Estimation ◽  
Tracking Control ◽  
Servo Systems ◽  
Adaptive Parameter ◽  
Hydraulic Servo ◽  
Robust Adaptive

Robust adaptive tracking control of hydraulic actuators with unmodeled dynamics

2019 ◽  
Vol 41 (14) ◽  
pp. 3887-3898 ◽  
Author(s):  
Jingzhong Zheng ◽  
Jianyong Yao
Keyword(s):  
Tracking Control ◽  
High Performance ◽  
Rigid Body Dynamics ◽  
Structural Flexibility ◽  
Servo Systems ◽  
Hydraulic Actuators ◽  
Adaptive Tracking Control ◽  
Hydraulic Servo ◽  
Robust Adaptive ◽  
Drive Systems

Traditional control methods for precise motion control of electro-hydraulic servo systems are primarily based on rigid-body dynamics of the system. Considering that structural flexibility of the mechanical components have a certain impact on all drive systems, the neglected high-frequency dynamics caused by structural flexibility have become one of the major obstacles when developing better control performance. In this paper, a high-accuracy tracking control is concerned for hydraulic actuators with unmodeled flexible dynamics. Firstly, a damping term is utilized to counterweigh the unmodeled nonlinear flexible function and a dynamic signal is designed to control the dynamic flexible disturbance. Then, in order to process parametric uncertainties along with unmodeled flexible dynamics, an adaptive backstepping controller is proposed. The controller theoretically guarantees global bounded tracking performance via Lyapunov analysis. The experimental and simulation results illustrate the high-performance nature of the proposed controller.

Robust adaptive parameter estimation of sinusoidal signals

Automatica ◽  
2015 ◽  
Vol 53 ◽  
pp. 376-384 ◽  
Author(s):  
Jing Na ◽  
Juan Yang ◽  
Xing Wu ◽  
Yu Guo
Keyword(s):  
Parameter Estimation ◽  
Adaptive Parameter ◽  
Sinusoidal Signals ◽  
Robust Adaptive

Robust Adaptive and Repetitive Digital Tracking Control and Application to a Hydraulic Servo for Noncircular Machining

1994 ◽  
Vol 116 (1) ◽  
pp. 24-32 ◽  
Author(s):  
Tsu-Chin Tsao ◽  
Masayoshi Tomizuka
Keyword(s):  
Tracking Control ◽  
Tool Positioning ◽  
Noncircular Machining ◽  
Servo Actuator ◽  
Hydraulic Servo ◽  
Feedforward Controller ◽  
Robust Adaptive ◽  
Control System Synthesis ◽  
Adaptive Feedforward ◽  
Digital Tracking

This paper presents the development of robust digital tracking control algorithms and their real-time implementation on an electrohydraulic servo-actuator for tool positioning in noncircular machining. Robust adaptive feedforward controller for tracking arbitrary signals and robust repetitive controller for tracking periodic signals against disturbances and unmodeled dynamics have been developed. Experimental results are presented to illustrate the control system synthesis procedures and tracking performance.

Model reference adaptive tracking control for hydraulic servo systems with nonlinear neural-networks

2020 ◽  
Vol 100 ◽  
pp. 396-404
Author(s):  
Zhikai Yao ◽  
Jianyong Yao ◽  
Feiyu Yao ◽  
Qiang Xu ◽  
Minrui Xu ◽  
...  
Keyword(s):  
Neural Networks ◽  
Tracking Control ◽  
Model Reference ◽  
Servo Systems ◽  
Adaptive Tracking Control ◽  
Adaptive Tracking ◽  
Hydraulic Servo ◽  
Model Reference Adaptive ◽  
Nonlinear Neural Networks
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