A knowledge-based dynamic job-scheduling in low-volume/high-variety manufacturing

Yaoxue Zhang, Hua Chen
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引用次数: 16

Abstract

One of the most important issues in computer integrated manufacturing systems is job scheduling. Though many scheduling criteria for job scheduling have been proposed, most of them are impractical for application in the low-volume/high-variety manufacturing environment. This paper reports the development of a knowledge-based dynamic job-scheduling system in the low-volume/high-variety manufacturing environment. The system provides us with a practical facility for job scheduling which takes into account the influence of many factors such as machine setup times, cell changes, replacement machines and load balancing among machines. The system is based on a set of heuristic algorithms and intranet technology. It has been found that the knowledge-based paradigm and the intranet technology are very useful for complex scheduling problems in low-volume/high-variety manufacturing cases.

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小批量多品种制造中基于知识的动态作业调度
作业调度是计算机集成制造系统中最重要的问题之一。虽然已有许多作业调度标准被提出,但大多数标准并不适用于小批量、多品种的生产环境。本文研究了小批量、多品种制造环境下基于知识的动态作业调度系统的开发。该系统为作业调度提供了一种实用的工具,它考虑了许多因素的影响,如机器设置时间、单元变化、替换机器和机器之间的负载平衡。该系统基于一套启发式算法和内部网技术。研究发现,以知识为基础的模式和内部网技术对于解决小批量、高品种生产情况下的复杂调度问题是非常有用的。
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