A method for searching assembly orders by utilizing reinforcement learning

Keijiro Watanabe, Kyosuke Arai, Shuhei Inada

Research output: Contribution to journalArticle

Abstract

In recent years, the movement to introduce robots in production systems with the aim of replacing manual labor or combining manual and robot labor has started. In particular, dual-arm robots, which have two robotic arms, are gaining much attention in view of their ability to replace manual laborers. However, planning an efficient work system beforehand and teaching the lean movements to the robots are essential for using them more effectively. In assembly processes, the result of selecting the assembly order greatly influences the productivity of the production process. In such a background, this paper examines a method for determining an assembly order with high work efficiency. Under the assumption that dual-arm robots assemble the products that can be assembled easily (i.e., stacking toy blocks is used here), we propose a computational model for searching a highly efficient assembly order utilizing reinforcement learning. We also consider a method for using the results of previous learning model studies to effectively find solutions for new assembly models. Regression analysis is utilized to transfer the past learning results.

Original languageEnglish
Pages (from-to)121-130
Number of pages10
JournalJournal of Japan Industrial Management Association
Volume69
Issue number3
DOIs
Publication statusPublished - 2018 Jan 1

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Keywords

  • Assembly order
  • Disassembly order
  • Dual-arm robot
  • Q-learning
  • Regression analysis
  • Reinforcement learning

ASJC Scopus subject areas

  • Strategy and Management
  • Management Science and Operations Research
  • Industrial and Manufacturing Engineering
  • Applied Mathematics

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