due to variation of operation conditions, it's not easy task to acquire batch process model, which lead to difficulty in implementing quality control strategies . so modeling process through identification is always a hotspot in control and monitoring field 但由于工作条件不断变化,间歇过程系统的数学模型发生变化,使得质量先进控制策略实施面临较大困难,所以通过辨识方法得到系统的模型一直是控制和故障诊断领域研究的热点。
multi-product and multi-purpose batch process model with petri net was addressed for a review of history . however, the petri net describing real processes usually tends to be very complex and extremely large . to circumvent this situation, some extensions such as abstract and hierarchical methods were proposed 本文探讨并总结了多产品和多目的批处理生产过程的赋时petri网模型,为改进petri网描述节点过多的缺点,利用抽象和层次模拟等技术对其进行简化。