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Dynamic Window Approach with path-following for Unmanned Surface Vehicle based on Reinforcement Learning

무인수상정 경로점 추종을 위한 강화학습 기반 Dynamic Window Approach

  • Heo, Jinyeong (Department of Industrial Engineering, Ajou University) ;
  • Ha, Jeesoo (Unmanned Systems, LIG Nex1 Co., Ltd.) ;
  • Lee, Junsik (Unmanned Systems, LIG Nex1 Co., Ltd.) ;
  • Ryu, Jaekwan (Unmanned Systems, LIG Nex1 Co., Ltd.) ;
  • Kwon, Yongjin (Department of Industrial Engineering, Ajou University)
  • 허진영 (아주대학교 산업공학과) ;
  • 하지수 (LIG넥스원(주) 무인체계개발단) ;
  • 이준식 (LIG넥스원(주) 무인체계개발단) ;
  • 유재관 (LIG넥스원(주) 무인체계개발단) ;
  • 권용진 (아주대학교 산업공학과)
  • Received : 2020.10.06
  • Accepted : 2021.01.29
  • Published : 2021.02.05

Abstract

Recently, autonomous navigation technology is actively being developed due to the increasing demand of an unmanned surface vehicle(USV). Local planning is essential for the USV to safely reach its destination along paths. the dynamic window approach(DWA) algorithm is a well-known navigation scheme as a local path planning. However, the existing DWA algorithm does not consider path line tracking, and the fixed weight coefficient of the evaluation function, which is a core part, cannot provide flexible path planning for all situations. Therefore, in this paper, we propose a new DWA algorithm that can follow path lines in all situations. Fixed weight coefficients were trained using reinforcement learning(RL) which has been actively studied recently. We implemented the simulation and compared the existing DWA algorithm with the DWA algorithm proposed in this paper. As a result, we confirmed the effectiveness of the proposed algorithm.

Keywords

References

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