Solving assembly scheduling problems with tree-structure precedence constraints: A Lagrangian relaxation approach

Jingyang Xu; Rakesh Nagi

doi:10.1109/TASE.2013.2259816

Solving assembly scheduling problems with tree-structure precedence constraints: A Lagrangian relaxation approach

Research output: Contribution to journal › Article

Abstract

In this paper, we consider an assembly scheduling problem (ASP) with tree-structured precedence constraints. In our problem, there are a number of work centers. Each work center contains a number of machines of the same functionality. The job to be processed via this system is a job with tree-structure precedence constraints. Each operation in the job has a designated work center. We propose a mixed integer linear programming formulation and solve the problem with a Lagrangian relaxation (LR) approach.We solve the subproblems of theLRproblem via a heuristic method and generate feasible solutions via a randomized list scheduling algorithm. Near-optimal results are obtained and the computational time is within a few seconds for problems with size up to 20 machines and 300 operations.

Original language	English (US)
Pages (from-to)	757-771
Number of pages	15
Journal	IEEE Transactions on Automation Science and Engineering
Volume	10
Issue number	3
DOIs	https://doi.org/10.1109/TASE.2013.2259816
State	Published - Jul 1 2013
Externally published	Yes

Keywords

Assembly scheduling
Lagrangian relaxation (LR)
Makespan
Parallel machine scheduling
Randomized algorithm
Subgradient search

ASJC Scopus subject areas

Control and Systems Engineering
Electrical and Electronic Engineering

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Xu, J., & Nagi, R. (2013). Solving assembly scheduling problems with tree-structure precedence constraints: A Lagrangian relaxation approach. IEEE Transactions on Automation Science and Engineering, 10(3), 757-771. https://doi.org/10.1109/TASE.2013.2259816

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