Adaptive prescribed performance second-order sliding mode tracking control of autonomous underwater vehicle using neural network-based disturbance observer

被引：50
作者：
Ding, Zhongjun [1 ,2 ]
Wang, Haipeng [1 ]
Sun, Yanchao [1 ]
Qin, Hongde [1 ]
机构：
[1] Harbin Engn Univ, Sci & Technol Underwater Vehicle Lab, Harbin 15001, Peoples R China
[2] Natl Deep Sea Ctr, Qingdao 266237, Peoples R China
来源：
OCEAN ENGINEERING | 2022年 / 260卷
基金：
中国国家自然科学基金;
关键词：
Autonomous underwater vehicle; Error constraint; Neural network -based disturbance observer; Prescribed performance; Second -order sliding mode;
D O I：
10.1016/j.oceaneng.2022.111939
中图分类号：
U6 [水路运输]; P75 [海洋工程];
学科分类号：
0814 ; 081505 ; 0824 ; 082401 ;
摘要：
For trajectory tracking control problem of autonomous underwater vehicle (AUV) with model uncertainties, unknown nonlinear external disturbances, and input saturation, an observer-based adaptive second-order sliding mode control scheme with prescribed performance is proposed. Firstly, a finite time performance function (FTPF) is constructed to constrain the tracking error to the prescribed precision within the preset finite time, and achieve the prescribed dynamic convergence performance and tracking accuracy. Then, a neural network-based distur-bance observer (NNDO) is designed to deal with model uncertainties and external disturbances, respectively. Based on prescribed performance control and sliding mode control technique, an adaptive prescribed perfor-mance second-order sliding mode control strategy was proposed. In addition, we construct an auxiliary system to overcome the effect of thrust saturation. Lyapunov method is applied to demonstrate the stability of the closed -loop system. Finally, the validity of the proposed control law is verified by numerical simulations.
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收藏
页数：18
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