Optimal equivalent compensation trajectory tracking control for underactuated underwater robots

被引：0
|
作者：
Li, Ya-Xin [1 ]
Liu, Li-Xiao [1 ]
Wang, Yu [1 ]
机构：
[1] School of Electrical Engineering and Information, Southwest Petroleum University, Chengdu
来源：
Kongzhi yu Juece/Control and Decision | 2024年 / 39卷 / 09期
关键词：
actuator saturation; disturbance compensation; sliding mode control; trajectory tracking; underactuated autonomous underwater robot;
D O I：
10.13195/j.kzyjc.2023.0845
中图分类号：
学科分类号：
摘要：
Towards the underactuated underwater robot, an optimal equivalent compensation control method is proposed with considerations of inherent characteristics of the Coanda-effect vectored thruster, such as actuator saturation and vectored moment coupling. Specifically, a sliding mode controller is designed based on trajectory tracking errors, and then radial basis function networks as well as extended state observers are built to estimate and compensate the actuator saturation and external disturbance. Then, the proposed method formulates the cost function in terms of underwater robot’s recursive state deviation by means of the discrete dynamic equation. The equivalent moment can be obtained in the thruster reachable set such that the minimum of the cost function is achieved. The obtained equivalent moment not only satisfies vectored moment coupling of the thruster, but also can eliminate the disturbance for the underactuated robot effectively. It is proved that the proposed control method is asymptotically stable according to the Lyapunov theory. Simulation results also indicate the effectiveness and robustness of the control method when the underwater robot conducts trajectory tracking tasks. © 2024 Northeast University. All rights reserved.
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页码：2923 / 2931
页数：8
相关论文
共 18 条
  • [11] Huang F, Xu J, Yin L G, Et al., A general motion control architecture for an autonomous underwater vehicle with actuator faults and unknown disturbances through deep reinforcement learning, Ocean Engineering, 263, (2022)
  • [12] Hua C C, Chen C H, Chen J N, Et al., Prescribed performance control of underwater robot based on disturbance observer, Control and Decision, 37, 5, pp. 1160-1166, (2022)
  • [13] Wang M, Ni J, Shi H T., Deterministic learning control of multiple autonomous underwater vehicles based on a distributed observer, Control and Decision, 38, 2, pp. 388-394, (2023)
  • [14] Li Y X, Liu L X, Wang Y, Et al., Hydrodynamic analysis and motion control of the Coanda-effect jet thruster for underwater robots, Ocean Engineering, 266, (2022)
  • [15] Fossen T I., Handbook of marine craft hydrodynamics and motion control, pp. 133-186, (2011)
  • [16] Atassi A N, Khalil H K., A separation principle for the stabilization of a class of nonlinear systems, IEEE Transactions on Automatic Control, 44, 9, pp. 1672-1687, (1999)
  • [17] Zhao Z L, Guo B Z., A novel extended state observer for output tracking of MIMO systems with mismatched uncertainty, IEEE Transactions on Automatic Control, 63, 1, pp. 211-218, (2018)
  • [18] Wang Z M., Sampled-data stabilization controller design of continuous-time nonlinear control systems: An approach based on their approximate discrete-time models, pp. 20-29, (2003)
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