Journal of the Institute of Electronics Engineers of Korea SC (전자공학회논문지SC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Localization and Navigation of a Mobile Robot using Single Ultrasonic Sensor Module

단일 초음파 센서모듈을 이용한 이동로봇의 위치추정 및 주행

  • Jin Taeseok (IIS, The University of Tokyo) ;
  • Lee JangMyung (Department of Electronics Engineering, Pusan National University)
  • Published : 2005.03.01
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Abstract

This paper presents a technique for localization of a mobile robot using a single ultrasonic sensor. The mobile robot is designed for operating in a well-structured environment that can be represented by planes, edges, corners and cylinders in the view of structural features. In the case of ultrasonic sensors, these features have the range information in the form of the arc of a circle that is generally named as RCD (Region of Constant Depth). Localization is the continual provision of a knowledge of position which is deduced from it's a priori position estimation. The environment of a robot is modeled into a two dimensional grid map. we defines a physically-based sonar sensor model and employs an extended Kalman filter to estimate position of the robot. The performance and simplicity of the approach is demonstrated with the results produced by sets of experiments using a mobile robot.

본 논문에서는 이동로봇에 장착된 단일 초음파 센서 회전 모듈을 이용하여 구조화가 잘 된 실내 환경에 대한 지도를 작성하고 작성된 지도를 바탕으로 로봇의 자기 위치를 보정하는 데 있어서 지도작성과 위치 보정에 대한 정량화를 통해 성능을 향상시키기 위한 방법을 제시한다 이동로봇의 환경은 물체의 형상, 즉 직선, 모서리 ,곡선 등의 기하학적인 형상으로 표현되는 지도를 구성하고 초음파센서의 거리정보로부터 동일거리영역(Region of Constant Depth: RCD)을 분류하였다. 그리고 물리적 기반의 초음파 센서모델을 적용하여 주행중인 이동로봇의 자기위치 추정할 수 있도록 확장 칼만필터를 이용하였다 제시된 방법을 이용하여 시뮬레이션을 통하여 제시한 방법을 검증하고 실내 환경에서의 실험을 통해서 그 성능을 제시하고 있다.

Keywords

References

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