Modeling and Control of Assembly Tasks and Systems.

Abstract

This report reviews ongoing research in modeling and control of assembly systems. A modeling framework is developed for representing assembly tasks as a collection of discrete operations with precedence relations reflecting physical constraints. Devices are mapped into the subtask description leading to an 'operation precedence graph' which is useful for analyzing alternative system configurations and supervisory control structures. Underlying continuous processes determine the tolerance requirements for accomplishing the subtasks. Since reducing uncertainty in the system configuration is the fundamental objective in assembly tasks, two alternatives for representing uncertainty are defined and illustrated by examples. These representations of uncertainty are discussed with respect to alternative feedback control strategies for satisfying tolerance constraints. The concluding section identifies directions for future research.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1985
Accession Number
ADA166445

Entities

People

  • Arthur C. Sanderson
  • Bruce H. Krogh

Organizations

  • Carnegie Mellon University

Tags

Communities of Interest

  • Autonomy
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Acquisition
  • Algorithms
  • Automation
  • Computational Processes
  • Computations
  • Computer Programming
  • Computer Programs
  • Control Systems
  • Control Systems Engineering
  • Engineering
  • Personal Information Managers
  • Probabilistic Models
  • Probability
  • Random Variables
  • Reliability
  • Systems Engineering
  • Test And Evaluation

Readers

  • Systems Analysis and Design
  • Team-Based Human-Centered Cognitive Task Decision Making and Information Performance.