Reinforcement learning-based adaptive PID controller for DPS

被引:39
|
作者
Lee, Daesoo [1 ]
Lee, Seung Jae [1 ]
Yim, Solomon C. [2 ]
机构
[1] Korea Maritime & Ocean Univ, Div Naval Architecture & Ocean Syst Engn, Busan, South Korea
[2] Oregon State Univ, Sch Civil Construct & Environm Engn, Corvallis, OR 97331 USA
关键词
Dynamic positioning system (DPS); Proportional-integral-derivative (PID); Fine-tuning; Deep reinforcement learning (DRL); Deep deterministic policy gradient (DDPG); DESIGN;
D O I
10.1016/j.oceaneng.2020.108053
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
A conventional PID controller for the DPS has limitations due to fixed gains and dependence on manual adjustment for its gains. Therefore, several previous studies developed a fuzzy-based adaptive PID controller for the DPS which tunes the gains based on the fuzzy logic. However, the fuzzy logic has its disadvantages due to a manual definition of fuzzy rules and fuzzy variables. To overcome those limitations, a deep reinforcement learning algorithm is adopted to learn the efficient adaptive gain-tuning strategy without human intuition behind since it does not require any prior knowledge about the dynamics of a ship or DPS. Finally, it is shown that the proposed system can result in better station-keeping performance without deterioration in its control efficiency.
引用
收藏
页数:12
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