A genetic-algorithm-based optimization model for scheduling flexible assembly lines
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作者:
Guo, Z. X.
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Hong Kong Polytech Univ, Inst Textiles & Clothing, Kowloon, Hong Kong, Peoples R ChinaHong Kong Polytech Univ, Inst Textiles & Clothing, Kowloon, Hong Kong, Peoples R China
Guo, Z. X.
[1
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Wong, W. K.
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Hong Kong Polytech Univ, Inst Textiles & Clothing, Kowloon, Hong Kong, Peoples R ChinaHong Kong Polytech Univ, Inst Textiles & Clothing, Kowloon, Hong Kong, Peoples R China
Wong, W. K.
[1
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Leung, S. Y. S.
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Hong Kong Polytech Univ, Inst Textiles & Clothing, Kowloon, Hong Kong, Peoples R ChinaHong Kong Polytech Univ, Inst Textiles & Clothing, Kowloon, Hong Kong, Peoples R China
Leung, S. Y. S.
[1
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Fan, J. T.
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Hong Kong Polytech Univ, Inst Textiles & Clothing, Kowloon, Hong Kong, Peoples R ChinaHong Kong Polytech Univ, Inst Textiles & Clothing, Kowloon, Hong Kong, Peoples R China
Fan, J. T.
[1
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Chan, S. F.
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Hong Kong Polytech Univ, Inst Textiles & Clothing, Kowloon, Hong Kong, Peoples R ChinaHong Kong Polytech Univ, Inst Textiles & Clothing, Kowloon, Hong Kong, Peoples R China
Chan, S. F.
[1
]
机构:
[1] Hong Kong Polytech Univ, Inst Textiles & Clothing, Kowloon, Hong Kong, Peoples R China
In this paper, a scheduling problem in the flexible assembly line (FAL) is investigated. The mathematical model for this problem is presented with the objectives of minimizing the weighted sum of tardiness and earliness penalties and balancing the production flow of the FAL, which considers flexible operation assignments. A bi-level genetic algorithm is developed to solve the scheduling problem. In this algorithm, a new chromosome representation is presented to tackle the operation assignment by assigning one operation to multiple machines as well as assigning multiple operations to one machine. Furthermore, a heuristic initialization process and modified genetic operators are proposed. The proposed optimization algorithm is validated using two sets of real production data. Experimental results demonstrate that the proposed optimization model can solve the scheduling problem effectively.