Online Scheduling in Manufacturing: A Cumulative Delay - download pdf or read online

By Haruhiko Suwa

Online scheduling is well-known because the the most important decision-making means of construction regulate at a section of “being in creation" in accordance with the published store flooring time table. on-line scheduling will be additionally regarded as certainly one of key enablers to gain steered capable-to-promise in addition to available-to-promise to buyers in addition to lowering construction lead instances lower than fresh globalized aggressive markets.

Online Scheduling in Manufacturing introduces new techniques to on-line scheduling in accordance with an idea of cumulative hold up. The cumulative hold up is thought of as consolidated info of uncertainties lower than a dynamic setting in production and will be amassed continually with no a lot attempt at any deadlines in the course of a time table execution. during this method, the cumulative hold up of the agenda has the real position of a criterion for you make a decision even if a agenda revision is conducted. The cumulative hold up method of set off agenda revisions has the subsequent functions for the sensible decision-making:

1. to minimize common time table revisions which don't inevitably enhance a present scenario with a lot fee for its operation;

2. to prevent overreacting to disturbances depending on strongly anyone store flooring situation; and

3. To simplify the tracking strategy of a time table status.

Online Scheduling in Manufacturing may be of curiosity to either practitioners and researchers who paintings in making plans and scheduling in production. Readers will locate the significance of when-to-revise rules in the course of a agenda execution and their impacts on scheduling results.

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Int J Prod Res 37(12):2725–2753 68. Kim D-W, Na D-G, Chen FF (2003) Unrelated parallel machine scheduling with setup times and a total weighted tardiness objective. Robot Comput Integr Manuf 9(1–2):173–181 69. Kolahan F, Liang M (1998) An adaptive TS approach to JIT sequencing with variable processing times and sequence-dependent setups. Eur J Oper Res 109:142–159 70. Kolonko M (1999) Some new results on simulated annealing applied to the job shop scheduling problem. Eur J Oper Res 113:123–136 71.

Planning decision point: Throughout this book, a point in time on which all the decision makings relating to planning or scheduling over a certain planning horizon are actually conducted is called planning decision point. At a planning decision points, the decision maker creates a capacity plan and a detailed shop floor schedule for the forthcoming planning horizon consisting of multiperiods. Then, the plan or schedule for the first period is released at the beginning of the first period. 2 shows the relation between the planning decision point and its planning horizon.

Preemptions: When an urgent job ju should occur to a machine, for instance, while it is processing some other job j, we would suspend the processing of job j to switch from j to ju . This is called preemption. Furthermore, it is assumed, in most of the literature dealing with theoretical models, that we can resume the processing of the former job j after finishing the urgent job ju without condition, that is, the time required for finishing job j is given by its remaining processing time. This assumption is referred to as interrupt and resume.

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