Symbol grounding via a hybrid architecture in an autonomous assembly system

  • Authors:
  • Chris Malcolm;Tim Smithers

  • Affiliations:
  • -;-

  • Venue:
  • Robotics and Autonomous Systems
  • Year:
  • 1990

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Abstract

We describe the architectural principles of our somass robotic assembly system. It requires little more information than the shape of the desired assembly and the shape of the parts from which to construct an assembly plan, which is executed reliably by a robot system. It is a hybrid system, comprising a careful marriage of a prolog assembly planning system with a plan execution agent designed to control uncertainty (including the use of sensors) by means of behavioural modules which accomplish useful motions of the parts. The key notions are the simplification of the planner resulting from increasing the competence of the plan execution agent, and grounding the planner through a single hierarchy of behavioural modules instead of a twin hierarchy of sensing and action. We develop new terms for this discussion, since the old ones-such as ''subsymbolic''-beg the questions we wish to address.