Optimization research of electrohydraulic proportional servo adjustment system for shearer drum based on linear active disturbance rejection control

In this paper, a linear active disturbance rejection control strategy (LADRC) aiming at the nonlinearity and load disturbance problems in electrohydraulic proportional servo system was proposed. The mathematical model of the electrohydraulic proportional servo system was established, and the LADRC c...

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Bibliographic Details
Published in:International journal of dynamics and control 2024-05, Vol.12 (5), p.1502-1511
Main Authors: Gao, Haojie, Wang, Rui, Xiong, Xin, Wen, Zhisong, Song, Jingzhe
Format: Article
Language:English
Subjects:
Accuracy
Active control
Complexity
Control
Control and Systems Theory
Controllers
Dynamical Systems
Engineering
Parameters
Perturbation
Physical properties
Proportional integral derivative
Pulse duration
Rejection
Robustness (mathematics)
Tracking control
Vibration
White noise
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Summary:In this paper, a linear active disturbance rejection control strategy (LADRC) aiming at the nonlinearity and load disturbance problems in electrohydraulic proportional servo system was proposed. The mathematical model of the electrohydraulic proportional servo system was established, and the LADRC controller that composed of LTD, LESO and LSEF was designed. The simulation analysis results revealed the LADRC controller has high anti-disturbance ability and tracking accuracy in different working conditions, such as no external disturbance, sudden external disturbance and multiple external disturbance, and the control performance was better than the traditional PID controller. When tracking the step signal with white noise and pulse width disturbance, the estimation accuracy of the LESO observer was slightly reduced, but it could still meet the requirements of the field operation tracking accuracy of the shearer automatic heightening system. Under the condition of system internal parameter perturbation, when the perturbation of physical parameters was less than 30%, LADRC showed strong robustness. LADRC in this study can effectively suppress the multi-source random uncertainty disturbance in the operation process of the roller height adjustment system, while realizing accurate track tracking of the destination cutting path.
ISSN:2195-268X
2195-2698
DOI:10.1007/s40435-023-01266-7