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    Novel heuristic for low-batch manufacturing process scheduling optimisation with reference to process engineering

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    Publication date
    2011
    Author
    Maqsood, Shahid
    Khan, M. Khurshid
    Wood, Alastair S.
    Keyword
    Process scheduling; Optimisation; Batch-job; Makespan; Hybrid heuristic (HybH); Index based heuristic (IBH); Small batches; Finished batch-job (FBJ)
    Rights
    © 2011 De Gruyter. Reproduced in accordance with the publisher's selfarchiving policy.
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    Scheduling is an important element that has a major impact on the efficiency of all manufacturing processes. It plays an important role in optimising the manufacturing times and costs resulting in energy efficient processes. It has been estimated that more than 75% of manufacturing processes occur in small batches. In such environments, processes must be able to perform a variety of operations on a mix of different batches. Batch-job scheduling optimisation is the response to such low batch manufacturing problems. The optimisation of batch-job process scheduling problem is still a challenge to researchers and is far from being completely solved due to its combinatorial nature. In this paper, a novel hybrid heuristic (HybH) solution approach for batch-job scheduling problem is presented with the objective of optimising the overall Makespan (Cmax). The proposed HybH is the combination of Index Based Heuristic (IBH) and the Finished Batch-Job (FBJ) process schedule. The heuristic assigns the first operation to a batch-job using IBH and the remaining operations on the basis FBJ process schedule. The FBJ process schedule gives priority to the batch-job with early finished operations, without violating the constraints of process order. The proposed HybH is explained with the help of a detailed example. Several benchmark problems are solved from the literature to check the validity and effectiveness of the proposed heuristic. The presented HybH has achieved batch-job process schedules which have outperformed the traditional heuristics. The results are encouraging and show that the proposed heuristic is a valid methodology for batch process scheduling optimisation.
    URI
    http://hdl.handle.net/10454/9550
    Version
    published version paper
    Citation
    Maqsood S, Khan MK and Wood AS (2011) Novel heuristic for low-batch manufacturing process scheduling optimisation with reference to process engineering. Chemical Product and Process Modeling. 6(2): Article 8.
    Link to publisher’s version
    http://dx.doi.org/10.2202/1934-2659.1602
    Type
    Article
    Collections
    Engineering and Informatics Publications

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