Mobile Robot Navigation in an Unstructured and Unknown Environment Using AI Techniques

Volume 2 ◽  
2004 ◽  
Author(s):  
S. Parasuraman ◽  
V. Ganapathy ◽  
Bijan Shirinzadeh

This paper shows the new approach to solve the Mobile Robot Navigation issues. The approach consists of the simple behavior design based on Situation Context of Applicability (SCA) and arbitration of the concurrent act ivies of several possible competing behaviors. This work also shows some of the reviews of the related approaches, which are attempted to resolve the robot navigational issues. In this work the design of the behavior is based on regulatory control using fuzzy logic and the coordination and behavior selection is defined by fuzzy rules, which uses the SCA for each behavior. Also, in the SCA method, the decision-making processes of a few behaviors have been developed and applied for Active Media Pioneer Robot. Fuzzy Logic Decision Mechanism (FLDM) is developed by using the Fuzzy Associate Membership process, which are used here simplifies the design of the robotic controller and reduces the number of rules to be determined. In addition, any behavior can be added or modified easily. Applying the proposed methods, experimental results are also shown for the Obstacle avoidance, Wall following and Seek-goal behaviors.

2018 ◽  
Vol 125 ◽  
pp. 11-17 ◽  
Author(s):  
Ngangbam Herojit Singh ◽  
Khelchandra Thongam

Author(s):  
V. Ram Mohan Parimi ◽  
Devendra P. Garg

This paper deals with the design and optimization of a Fuzzy Logic Controller that is used in the obstacle avoidance and path tracking problems of mobile robot navigation. The Fuzzy Logic controller is tuned using reinforcement learning controlled Genetic Algorithm. The operator probabilities of the Genetic Algorithm are adapted using reinforcement learning technique. The reinforcement learning algorithm used in this paper is Q-learning, a recently developed reinforcement learning algorithm. The performance of the Fuzzy-Logic Controller tuned with reinforcement controlled Genetic Algorithm is then compared with the one tuned with uncontrolled Genetic Algorithm. The theory is applied to a two-wheeled mobile robot’s path tracking problem. It is shown that the performance of the Fuzzy-Logic controller tuned by Genetic Algorithm controlled via reinforcement learning is better than the performance of the Fuzzy-Logic controller tuned via uncontrolled Genetic Algorithm.


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