Mobile robot wall-following control using a behavior-based fuzzy controller in unknown environments

Document Type : Research Paper


1 Institute of Manufacturing Information and Systems, National Cheng Kung University, Tainan City 70101, Taiwan, ROC

2 Department of Computer Science and Information Engineering, National Chin-Yi University of Technology, Taichung City 41170, Taiwan, ROC


This paper addresses a behavior-based fuzzy controller (BFC) for mobile robot wall-following control.
The wall-following task is usually used to explore an unknown environment.
The proposed BFC consists of three sub-fuzzy controllers, including Straight-based Fuzzy Controller (SFC),
Left-based Fuzzy Controller (LFC), and Right-based Fuzzy Controller (RFC).
The proposed wall-following controller has three characteristics: the mobile robot keeps a distance from the wall,
the mobile robot has a high moving velocity, and the mobile robot has a good robustness ability of disturbance.
The proposed BFC will be used to control the real mobile robot.
The Pioneer 3-DX mobile robot has sonar sensors in front and sides, and it is used in this study.
The inputs of BFC are sonar sensors data and the outputs of BFC are robot¡¦s left/right wheel speed.
Experimental results show that the proposed BFC successfully performs the mobile robot wall-following task
in a real unknown environment.


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