Real-time scheduling for hybrid flowshop in ubiquitous manufacturing environment

Hao Luo, Ji Fang, George Q. Huang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

51 Citations (Scopus)

Abstract

This paper discusses the implementation of RFID technologies, which enable the shop floor visibility and reduce uncertainties in the real-time scheduling for hybrid flowshop (HFS) production. In the real-time HFS environment, the arriving of new jobs is dynamic, while the processes in work stages are not continuous. The decision makers in shop floor level and stage level have different objectives. Therefore, classical off-line HFS scheduling approaches cannot be used under these situations. In this research, two major measures are taken to deal with these specific real-time features. Firstly, a ubiquitous manufacturing (UM) environment is created by deploying advanced wireless devices into value-adding points for the collection and synchronization of real-time shop floor data. Secondly, a multi-period hierarchical scheduling (MPHS) mechanism is developed to divide the planning time horizon into multiple shorter periods. The shop floor manager and stage managers can hierarchically make decisions for their own objectives. Finally, the proposed MPHS mechanism is illustrated by a numerical case study.

Original languageEnglish
Pages (from-to)12-23
Number of pages12
JournalComputers and Industrial Engineering
Volume84
DOIs
Publication statusPublished - 1 Jun 2015
Externally publishedYes

Keywords

  • Hybrid flowshop
  • Real-time scheduling
  • Ubiquitous manufacturing

ASJC Scopus subject areas

  • General Computer Science
  • General Engineering

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