Journal of the Korean Institute of Intelligent Systems (한국지능시스템학회논문지)

Korean Institute of Intelligent Systems (한국지능시스템학회)
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Design of Path Tracking Controller for Underactuated Autonomous Underwater Vehicle Using Approach Angle Concept

접근 각도 개념을 이용한 과소 작동기 무인 잠수정의 경로 추적 제어기 설계

  • 김경주 (연세대학교 전기전자공학과) ;
  • 최윤호 (경기대학교 전자공학과) ;
  • 박진배 (연세대학교 전기전자공학과)
  • Received : 2011.10.05
  • Accepted : 2012.03.07
  • Published : 2012.04.25
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Abstract

In this paper, we propose a method for designing the path tracking controller using an approach angle concept for an underactuated autonomous underwater vehicle (AUV). The AUV is controlled by the surge speed and yaw rate: there is no side thruster. To solve this underactuated AUV problem in the path tracking, we introduce an approach angle concept which makes the AUV converge to the reference path. And we design the path tracking controller using the proposed approach angle. To design the path tracking controller, we obtain the new vehicle's error dynamics in the body-fixed frame, and then design the path tracking controller based on Lypunov direct method. Finally, some simulation results demonstrate the effectiveness of the proposed controller.

본 논문에서는 접근 각도 개념을 이용하여 과소작동기 형태의 무인 수중 잠수정의 경로 추적 제어기 설계 방법을 제안한 다. 과소 작동기 형태를 가지는 무인 수중 잠수정은 종 방향 추진력과 회전력에 의해 속도와 방향을 조절하나, 횡 방향 추 진기가 없기 때문에 횡 방향에 대한 움직임을 제어 할 수 없다. 이러한 무인 수중 잠수정의 과소 작동기 문제를 해결하기 위하여 본 논문에서는 기준 경로에 대한 접근 각도 개념을 제안하고, 제안한 접근 각도를 이용하여 경로 추적 제어기를 설 계한다. 이를 위해 동체 고정 좌표계에서 새로운 오차 방정식을 구하고, 리아푸노프 방법을 기반으로 경로 추적 제어기를 설계한다. 본 논문에서는 컴퓨터 시뮬레이션 통해 제안한 방법에 의해 설계된 제어기의 성능을 검증한다.

Keywords

References

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