基于Petri网的批处理调度研究

Research for Scheduling of Batch Processes Based on Petri Nets

批处理过程存在于复杂的动态环境中,来自主客观的干扰及问题固有的易变性,会导致各种过程参数的变化,因此,需要研究对意外事件作出快速反应的动态调度方法,以捕捉生产环境的实时变化。该文针对批处理过程中最常出现的操作处理时间波动,提出了基于Petri网仿真技术的批处理过程动态调度方法。仿真结果表明,该方法能有效地改善调度性能,为批处理过程动态调度的研究提供了新思路。

Batch processes usually exist in a dynamic and complex environment. The objective or subjective disturbance, So, it is required to consider dynamic scheduling with quick responsivity to unexpected events so as to catch the real time changes in production environ-ment. For the deviations of processing times more often occurring in batch processes, a dynamic rescheduling method is put forward in this paper by integrating with rule-based schedule and Petri net simulation. It indicates a new direction for the research in dynamic scheduling of batch processes. Some simulation examples are demonstrated for this method.