Delay colored Petri network-based steel rolling system modeling method

Abstract

The invention discloses a delay colored Petri network-based steel rolling system modeling method, which is mainly applicable to steel rolling systems and also suitable for other manufacturing systems. The method comprises the following main modeling steps of: firstly, building a structural model in the steel rolling system; secondly, building a top (homepage) model of the steel rolling system; and thirdly, building a subpage model of the steel rolling system, wherein a color set is defined first for distinguishing the serial number of different equipment in the system and then the system structure and action sequence of a subpage are described by using a delay Petri network and a corresponding action rule set is defined. Compared with the basic Petri network modeling method, the delay colored Petri network-based steel rolling system modeling method has the advantages that: the modeling difficulty of the steel rolling system is greatly reduced, the hierarchical structure is clear, the scale of the system structure changes small, and the expandability and the dynamics of the system are represented more strongly and conflicts and deadlocks of the system can be avoided more easily.

Description

technical field [0001] The invention relates to a method for analyzing, designing and modeling a manufacturing unit of a manufacturing system in a distributed control system, in particular to a modeling and designing method based on time-delayed colored Petri nets in a steel rolling system. Background technique [0002] When ordinary Petri nets are used to establish a steel rolling system model, due to the complex structure of the system and the strong pertinence of the model, it is very difficult to establish and expand the model, and the established model has a huge space. [0003] When building the steel rolling system model, the colored Petri net adopts the idea of ​​color set and layering, which can realize the modularization and layering of the system model, and can make the system model structure clearer and more convenient to express, but it cannot express the time factor of the system . [0004] The steel rolling system model of the delayed Petri net can express th...

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Problems solved by technology

[0002] When ordinary Petri nets are used to establish a steel rolling system model, due to the complex structure of the system and the strong pertinence of the model, it is very difficult to establish and expand the model, and the established model has a huge space

[0003] When building the steel rolling system model, the colored Petri net adopts the idea of ​​color set and layering, which can realize the modularization and layering of the system model, and can make the system model structure clearer and more convenient to express, but it cannot express the time factor of the system

[0004] The steel rolling system model of the delayed Petri net can express the time of the system, but the established system model is the same as the basic Petri net, the system model has a complex structure, and it is difficult to expand and establish the model.

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