Plan Execution Based on Active Perception: Adding Hints to Plans

  • Authors:
  • Miguel Schneider-Fontán

  • Affiliations:
  • Instituto de Automática Industrial (IAI), Consejo Superior de Investigaciones Cientiíficas (CSIC), La Poveda, Arganda del Rey, Madrid 28500. miguel@cs.brandeis.edu

  • Venue:
  • Autonomous Robots
  • Year:
  • 1999

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Abstract

In this paper we present a complete control architecture for amobile robot which enables it to achieve a set of proposed goals with a highdegree of autonomy and to react to the changing environment in realtime. Autonomy and robustness are achieved through careful selectionand incremental implementation of a set of basic Motor-Behaviors thatinterpret the sensor readings (sonar, vision and odometric sensors)and actuate the motors. The plan is provided by a user, and isexpressed as a sequence of goals and a series of hints on how toachieve them. These hints are based on the user‘s knowledge of theenvironment and of the robot‘s behavioral and perceptual abilities. Anew set of behaviors, called Conductor-Behaviors, which inspect andmodify Motor-Behaviors‘ attributes, have been introduced in order tolink the robot‘s Motor-Behaviors to the user‘s plan. Finally, acanonical set of symbols, attached to the Motor-Behaviors, serves aswell grounded symbols that the user can utilize to express theplans. We also report experimental results with a real robot thatdemonstrate how plans expressed as goals and hints to achieve themimprove the robot‘s performance.