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Wall-Following Control of a Two-Wheeled Mobile Robot

Chung, Tan-Lam (Department of Mechanical Eng., College of Eng., Pukyong National University)
Bui, Trong-Hieu (Department of Mechanical Eng., College of Eng., Pukyong National University)
Kim, Sang-Bong (Department of Mechanical Eng., College of Eng., Pukyong National University)
Oh, Myung-Suck (Department of Mechanical Eng., College of Eng., Pukyong National University)
Nguyen, Tan-Tien (Department of Mechanical Eng., Ho Chi Minh City University of Technology)

Publication Information

Journal of Mechanical Science and Technology / v.18, no.8, 2004 , pp. 1288-1296 More about this Journal

Abstract

Wall-following control problem for a mobile robot is to move it along a wall at a constant speed and keep a specified distance to the wall. This paper proposes wall-following controllers based on Lyapunov function candidate for a two-wheeled mobile robot (MR) to follow an unknown wall. The mobile robot is considered in terms of kinematic model in Cartesian coordinate system. Two wall-following feedback controllers are designed: full state feedback controller and observer-based controller. To design the former controller, the errors of distance and orientation of the mobile robot to the wall are defined, and the feedback controller based on Lyapunov function candidate is designed to guarantee that the errors converge to zero asymptotically. The latter controller is designed based on Busawon's observer as only the distance error is measured. Additionally, the simulation and experimental results are included to illustrate the effectiveness of the proposed controllers.

Keywords

Two-Wheeled Mobile Robot; Wall-Following;

Citations & Related Records

Reference

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