Kurniawan, Dwi and Raja, Andi Cakravastia and Suprayogi, Suprayogi and Halim, Abdul Hakim (2017) A Flow Shop Batch Scheduling and Operator Assignment Model to Minimise Actual Flow Time. Proceedings of the Asia Pacific Industrial Engineering & Management Systems Conference 2017.

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Abstract

This paper discusses simultaneous problems of batch scheduling and operator assignment. There are a number of parts to be processed in batches where each batch is to be processed through a number of operations for which there are alternative operators with different set up and processing times. Each operator will be assigned at most to one machine. The decision variables are which operators that should be assigned to available machines, the number of batches, batch sizes and the schedule of the resulted batches. The proposed algorithm works by trying different number of batch, starts from one, until the best objective function value found. Numerical examples show that the model tends to assign the best operator to the machine with the longest processing time. Solutions obtained in this paper are local-optimal. Keywords: Batch scheduling, operator assignment, flow shop, actual flow time.

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