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Journal of Intelligent Manufacturing

, Volume 27, Issue 5, pp 1049–1065 | Cite as

Developing a multi-objective genetic optimisation approach for an operational design of a manual mixed-model assembly line with walking workers

  • Atiya Al-Zuheri
  • Lee Luong
  • Ke Xing
Article

Abstract

A walking worker assembly line (WWAL), in which each cross-trained worker travels along the line to carry out all required tasks, is an example of lean system, specifically designed to respond quickly and economically to the fluctuating nature of market demands. Because of the complexity of WWAL design problems, classical heuristic approaches are not capable of solving problematic design characteristic of WWAL of very large design space. This paper presents a new genetic approach to address the mixed model walking worker manual assembly line optimisation design problem with multiple objectives. The aim is to select a set of operational variables to perform to the required demand for two product models. The goal is to produce the required models at the lowest cost possible, whilst keeping within an ergonomically balanced operation. Genetic algorithms are developed to tackle this problem. This paper describes the fundamental structure of this approach, as well as the influence of the crossover probability, the mutation probability and the size of the population on the performance of the genetic algorithm. The paper also presents an application of a developed algorithm to the operational design problem of plastic electrical box assembly line.

Keywords

Manual assembly line Walking workers Operational design Multiple objectives Genetic algorithms 

Notes

Acknowledgments

The authors would like to express their appreciation to anonymous referees for their helpful comments.

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.School of EngineeringUniversity of South AustraliaMawson LakesAustralia
  2. 2.Ministry of Science and TechnologyBaghdadIraq

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