Automatic design of fuzzy logic controller using a genetic algorithm for collision-free, time-optimal navigation of a car-like robot

  • Authors:
  • Nirmal Baran Hui;Dilip Kumar Pratihar

  • Affiliations:
  • Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur-721 302, India;Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur-721 302, India (Corresponding author. Tel.: +91 3222 282992/ Fax: +91 3222 282278/ E-mail: dkpra@mech.iitkgp.ernet.i ...

  • Venue:
  • International Journal of Hybrid Intelligent Systems
  • Year:
  • 2005

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Abstract

A fuzzy logic controller (FLC), intended to plan and control the motion of a car-like robot during its navigation among several moving obstacles, is designed automatically using a genetic algorithm (GA). The FLC is expressed by utilizing the structure of a neural network (NN), and a GA is used to optimize both its data base as well as rule base. An importance factor is introduced to determine the strength of a rule and thus justify its redundancy, if any. Results of the proposed approach are compared to those of a neuro-fuzzy approach, genetic-neuro-fuzzy approach and a potential field method, through computer simulations, for solving the navigation problems of a car-like robot. The present approach is found to perform better than the other three approaches, for most randomly-generated test scenarios.