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    • 5. 发明专利
    • Production simulation device, production simulation method, and production simulation program
    • 生产模拟装置,生产模拟方法和生产模拟程序
    • JP2013225184A
    • 2013-10-31
    • JP2012096183
    • 2012-04-20
    • Hitachi Ltd株式会社日立製作所
    • NAGAHARA SATOSHIISHIBASHI HISAYA
    • G05B19/418G06F19/00G06Q50/04
    • G06F17/5009G05B19/41865G05B2219/32301G06Q10/06G06Q50/04Y02P90/20Y02P90/26Y02P90/30
    • PROBLEM TO BE SOLVED: To shorten calculation time while obtaining correct simulation results by parallel calculation of production simulations by a plurality of processors.SOLUTION: A production line is divided into a plurality of blocks without mutual influences by calculating process influence relations of whether or not event calculation processing of a certain process influences event calculation processing of another process based on production line configurations such as a process order and resource sharing relation between processes, and next, blocking the processes influencing each other. Then, when the earliest execution date of the event of the certain block is in the future compared with the earliest execution date of an event of another block which the block influences, an event group which can be calculated in parallel is formed by determining the event at the earliest execution date of the block as an event which can be calculated in parallel. Finally, calculation time is shortened by allocating the formed event group to the plurality of processors to perform parallel calculation.
    • 要解决的问题:通过多个处理器的生产模拟的并行计算来缩短计算时间,同时获得正确的模拟结果。解决方案:生产线通过计算过程影响关系而不相互影响地分配多个块 特定处理的事件计算处理基于诸如进程顺序和进程之间的资源共享关系的生产线配置影响另一进程的事件计算处理,接下来阻止彼此影响的进程。 然后,当某个块的事件的最早执行日期在将来与块受到的另一个块的事件的最早执行日期相比时,可以通过确定事件来形成可以并行计算的事件组 在块的最早执行日期作为可以并行计算的事件。 最后,通过将形成的事件组分配给多个处理器来执行并行计算来缩短计算时间。