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Development of a Batch Manager for Dynamic Scheduling and Process Management in Multiproduct Batch Processes
Department of Chemical Engineering, Yonsei University, 134 Shinchon-Dong, Seodaemun-Gu, Seoul 120-749, Korea 1Department of Chemical Engineering, Automatic Research Center, Pohang University of Science and Technology, San 31, Hyoja-Dong, Pohang 790-784, Korea
Korean Journal of Chemical Engineering, January 2000, 17(1), 27-32(6), 10.1007/BF02789249
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Abstract
A batch manager is developed for the dynamic scheduling and on-line management of process operations. The developed system consists of a process monitoring module and a dynamic scheduling module. When a deviation from the intial schedule is detected in a process monitoring module, dynamic scheduling is performed in the dynamic scheduling module and the initial schedule is adjusted to the proper schedule by using rescheduling algorithms presented in this paper. The adjusted schedule is shown in the process monitoring module. The dynamic scheduler in the batch manager copes with several unexpected process events of batch process operation by adjusting rate EST (Earliest Start Time) of equipment, redetermining the batch path and reassigning tasks to equipment. This study focuses on the implementation of a batch manager with on-line dynamic scheduling for batch process management. Examples of fodder production batch processes illustrate the efficiency of the algorthms.
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