Genetic optimization of a vehicle fuzzy decision system for intersections

  • Authors:
  • E. Onieva;V. MilanéS;J. Villagrá;J. PéRez;J. Godoy

  • Affiliations:
  • AUTOPIA Program at the Centro de Automática y Robótica (UPM-CSIC), La Poveda-Arganda del Rey, 28500 Madrid, Spain;California PATH, University of California at Berkeley, Richmond, CA 94804-4698, USA;AUTOPIA Program at the Centro de Automática y Robótica (UPM-CSIC), La Poveda-Arganda del Rey, 28500 Madrid, Spain;IMARA Team at INRIA Research Center, Paris - ROCQUENCOURT, France;AUTOPIA Program at the Centro de Automática y Robótica (UPM-CSIC), La Poveda-Arganda del Rey, 28500 Madrid, Spain

  • Venue:
  • Expert Systems with Applications: An International Journal
  • Year:
  • 2012

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Abstract

This paper presents a case study in which an autonomous vehicle must cooperate with a supposedly manually driven one to carry out a cross-roads manoeuvre without risk. The main difference with other intersection systems is that the manual vehicle is driven without paying attention to the controlled one, so a cooperative coordination between vehicles is not possible. In this case is the autonomous vehicle the responsible of adapting its speed to the state of the manually driven, for finalizing the manoeuvre both in a safe and efficient way. For this purpose, a three layer hierarchical fuzzy rule-based system (FRBS) is developed with the aim of dealing with such a situation: the first layer is in charge of detecting the kind of manoeuvre that will be necessary; the second, in the case that an intersection is going to be crossed, is in charge of determining the suitable speed to do so without risk; and the third acts on the vehicle's real speed. The first two layers are implemented by means of fuzzy decision systems, with the second being optimized by a genetic algorithm (GA). The GA evaluates candidates in random simulated scenarios taking into account different factors to calculate the fitness. These factors are: implementing a free collision policy, avoiding unnecessary stops, and terminating the manoeuvre as rapidly as possible.