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A method of multi-PERT system for parallel jobshop management

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4 Author(s)
Sugihara, H. ; Mitsubishi Electr. Corp., Nagoya, Japan ; Koizumi, H. ; Kataoka, N. ; Takahara, T.

Conflicts between jobs for shared resources happen daily on the manufacturing floor of a jobshop production facility. This makes the management of a manufacturing floor rather difficult. In order to solve this problem, we are proposing a system to plan and manage scheduling through the use of multi-PERT. We call this system the Concurrent Scheduling Method (CSM). Under CSM, the job structure of each individual order is clarified during the design stage to determine the production process. The result is detailed in CSM process charts similar to PERT diagrams. These multiplexed job structures are monitored in order to follow the progress and the schedule for all orders is planned and managed. A schedule planned in this way is able to have the resource utilization maximized fully and the critical path identified clearly. The information regarding the critical path helps to solve the load problem. In this way, the production process of the site is optimized for keeping the delivery date. Also, status changes caused by new orders, delivery date change requests or progress changes can be responded to quickly

Published in:

Parallel and Distributed Systems: Workshops, Seventh International Conference on, 2000

Date of Conference:

Oct 2000