Robust Assembly Line Balancing with Heterogeneous Workers. Moreira, M. C. O., Cordeau, J., Costa, A. M., & Laporte, G. Computers & Industrial Engineering, 88:254–263, 2015.
doi  abstract   bibtex   
Assembly lines are manufacturing systems in which a product is assembled progressively in workstations by different workers or machines, each executing a subset of the needed assembly operations (or tasks). We consider the case in which task execution times are worker-dependent and uncertain, being expressed as intervals of possible values. Our goal is to find an assignment of tasks and workers to a minimal number of stations such that the resulting productivity level respects a desired robust measure. We propose two mixed-integer programming formulations for this problem and explain how these formulations can be adapted to handle the special case in which one must integrate a particular set of workers in the assembly line. We also present a fast construction heuristic that yields high quality solutions in just a fraction of the time needed to solve the problem to optimality. Computational results show the benefits of solving the robust optimization problem instead of its deterministic counterpart.
@article{moreira15robust,
  title = {Robust Assembly Line Balancing with Heterogeneous Workers},
  author = {Moreira, M. C. O. and Cordeau, J.-F. and Costa, A. M. and Laporte, G.},
  year = {2015},
  journal = {Computers \& Industrial Engineering},
  volume = {88},
  pages = {254--263},
  issn = {0360-8352},
  doi = {10.1016/j.cie.2015.07.004},
  urldate = {2021-05-10},
  abstract = {Assembly lines are manufacturing systems in which a product is assembled progressively in workstations by different workers or machines, each executing a subset of the needed assembly operations (or tasks). We consider the case in which task execution times are worker-dependent and uncertain, being expressed as intervals of possible values. Our goal is to find an assignment of tasks and workers to a minimal number of stations such that the resulting productivity level respects a desired robust measure. We propose two mixed-integer programming formulations for this problem and explain how these formulations can be adapted to handle the special case in which one must integrate a particular set of workers in the assembly line. We also present a fast construction heuristic that yields high quality solutions in just a fraction of the time needed to solve the problem to optimality. Computational results show the benefits of solving the robust optimization problem instead of its deterministic counterpart.},
  copyright = {All rights reserved},
  langid = {english},
  file = {/Users/acosta/Zotero/storage/T4YWK4ZN/Moreira et al. - 2015 - Robust assembly line balancing with heterogeneous .pdf}
}

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