FMS production simulation allocation method based on colored Petri net

Abstract

The invention relates to an FMS production simulation allocation method based on a colored Petri net. The method is characterized by comprising the following steps that firstly, a production dispatching system model is built, and a customized processing strategy chart is obtained; secondly, a Petri net system model is built, a strategy chart and the Petri net system model are comprehensively processed, and an integrated Petri net model is obtained; secondly, production dispatching system verification is carried out, stimulation is carried out on a CPN model, and then deadlock screening is carried out. In this way, various logical relations in a system control model in an existing production link can be reflected in the whole processing process clearly, and therefore the system can accomplish assigned processing tasks in order. Meanwhile, the system model can be stimulated under the CPNTools environment, and FMS running situations under different layouts, different workpiece numbers and different static scheduling results are achieved. More importantly, an application system achieved by the adoption of the FMS production simulation allocation method has the good analysis and design adaptability.

Description

technical field [0001] The invention relates to a simulation method, in particular to a colored Petri net-based FMS production simulation distribution method. Background technique [0002] As far as the existing production simulation planning is concerned, because FMS has many important characteristics such as discrete, parallel, variable path, resource competition, variable batch, etc., it is difficult to accurately model it using traditional methods. Petri net is a powerful DES modeling tool, which can well represent the dynamics, concurrent relations, resource constraints, etc. in the system. Because of its easy-to-understand graphical interface and relatively rich and rigorous mathematical analysis methods, Petri nets are widely used in FMS production process modeling and production scheduling simulation. [0003] In the current research, there are two implementation methods for production scheduling based on Petri nets: [0004] The first approach transforms the sched...

AI Technical Summary

Problems solved by technology

However, the analysis of the system becomes more complicated, because although the structure of the network is simplified, the state space of the whole system does not become smaller

Moreover, many basic Petri net analysis methods cannot, or are difficult to be directly used in the analysis of colored Petri nets.

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