Search Results for author: Kouki Wakita

Found 4 papers, 0 papers with code

Parameter fine-tuning method for MMG model using real-scale ship data

no code implementations7 Dec 2023 Rin Suyama, Rintaro Matsushita, Ryo Kakuta, Kouki Wakita, Atsuo Maki

The results show that, in all cases, the accuracy of the maneuvering simulation is improved by applying the tuned parameters to the MMG model, and the validity of the proposed parameter fine-tuning method is confirmed.

Time Series

Data Augmentation Methods of Parameter Identification of a Dynamic Model for Harbor Maneuvers

no code implementations30 May 2023 Kouki Wakita, Yoshiki Miyauchi, Youhei Akimoto, Atsuo Maki

In this paper, we improve the generalization performance of the dynamic model for the automatic berthing and unberthing controller by introducing data augmentation.

Data Augmentation

Collision probability reduction method for tracking control in automatic docking / berthing using reinforcement learning

no code implementations13 Dec 2022 Kouki Wakita, Youhei Akimoto, Dimas M. Rachman, Yoshiki Miyauchi, Umeda Naoya, Atsuo Maki

This paper proposes a training method based on reinforcement learning for a trajectory tracking controller that reduces the probability of collisions with static obstacles.

On Neural Network Identification for Low-Speed Ship Maneuvering Model

no code implementations11 Nov 2021 Kouki Wakita, Atsuo Maki, Umeda Naoya, Yoshiki Miyauchi, Tohga Shimoji, Dimas M. Rachman, Youhei Akimoto

A new system identification method for generating a low-speed maneuvering model using recurrent neural networks (RNNs) and free running model tests is proposed in this study.

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