Coupled-disturbance-observer-based position tracking control for a cascade electro-hydraulic system

2017 ◽  
Vol 68 ◽  
pp. 367-380 ◽  
Author(s):  
Qing Guo ◽  
Jing-min Yin ◽  
Tian Yu ◽  
Dan Jiang
Keyword(s):  
Tracking Control ◽  
Hydraulic System ◽  
Disturbance Observer ◽  
Position Tracking ◽  
Position Tracking Control

Model-Free Algorithm for Friction Torque Adaptive Identification and Compensation

2010 ◽  
Vol 29-32 ◽  
pp. 155-162
Author(s):  
Li Jun Zheng ◽  
Xin Mei Cheng ◽  
Shan Shan Chen
Keyword(s):  
Nonlinear System ◽  
Control Problem ◽  
Tracking Control ◽  
Hydraulic System ◽  
Friction Torque ◽  
Position Tracking ◽  
Adaptive Identification ◽  
Model Free ◽  
Mathematics Knowledge ◽  
Position Tracking Control

In order to solve the electro-hydraulic system position tracking control problem, which caused by the nonlinear system friction torque disturbance, a model-free algorithm for the friction torque adaptive identification and compensation was put forward. The algorithm is based on the application mathematics knowledge and matching & following principle. It can accommodate to all situations with the friction torque (force) variety. The simulation result indicates that the algorithm can restrains the interference of the friction torque (force) effectively, and the system’s low speed character and tracking performance were been improved.

Position Tracking Control for Water Hydraulic Vane Actuator

2012 ◽  
Vol 591-593 ◽  
pp. 1673-1676
Author(s):  
Yong Yang ◽  
Zhi Gang Zeng
Keyword(s):  
Pid Control ◽  
Tracking Control ◽  
Hydraulic System ◽  
Variable Structure ◽  
Position Tracking ◽  
Simulation Experiments ◽  
Structure Control ◽  
Rotary Actuator ◽  
Position Tracking Control ◽  
Water Hydraulic

The control of the water hydraulic vane actuator has direct influences on the performance of the water hydraulic system. In the paper, a variable structure control (VSC) has been proposed and applied to the position tracking control of a water hydraulic rotary actuator. Based on the model of the water hydraulic vane actuator, simulation experiments and comparisons have been done with VSC controller and PID controller, respectively. Simulation experiment results show that in position tracking control applications, the use of VSC as the controller of the system is able to improve the position tracking performance of the system. Especially, the VSC system provides stronger robustness to different reference inputs than the PID control system. The position tracking control properties of the water hydraulic rotary actuator validate the effectiveness of the proposed VSC.

Position tracking control of electro-hydraulic single-rod actuator based on an extended disturbance observer

Mechatronics ◽  
2015 ◽  
Vol 27 ◽  
pp. 47-56 ◽  
Author(s):  
Kai Guo ◽  
Jianhua Wei ◽  
Jinhui Fang ◽  
Ruilin Feng ◽  
Xiaochen Wang
Keyword(s):  
Tracking Control ◽  
Disturbance Observer ◽  
Position Tracking ◽  
Position Tracking Control

scholarly journals An anti-sway positioning control method via load generalized position tracking with disturbance observer

2020 ◽  
pp. 002029402096213
Author(s):  
Dan Niu ◽  
Yuxuan Zhu ◽  
Xisong Chen ◽  
Qi Li ◽  
Xiaojun Wang ◽  
...  
Keyword(s):  
Tracking Control ◽  
Disturbance Observer ◽  
Control Algorithm ◽  
Control Method ◽  
Position Tracking ◽  
Bridge Crane ◽  
Test Results ◽  
Positioning Control ◽  
Disturbance Suppression ◽  
Position Tracking Control

The bridge crane system is widely used in the industrial production for transporting large loads. Its anti-sway positioning control is quite crucial for enhancing handling efficiency and safety, but it is also difficult due to underactuated dynamics and various disturbances. In this paper, an anti-sway positioning control algorithm for unmanned crane is proposed based on the load generalized position tracking control algorithm (GPTC), which combines with a disturbance observer to effectively reject the lumped disturbances. The test results show that the proposed method can effectively achieve anti-sway and positioning with prominent disturbance suppression improvements.

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