THE USE OF HIERARCHICAL MODELS WITH COLORED PETRI NETS IN THE STUDY OF ROBOTIC MANUFACTURING PERFORMANCE

Alin Florin POP, Florin BLAGA, Vlad Stefan NĂPÂRLICĂ, Voichița HULE, Claudiu-Ioan INDRE, Lajos VEREȘ

Abstract


This paper is a study through which robotic manufacturing cells can be modeled using hierarchical Petri nets. They are an efficient tool due to their ability to model dynamic processes. The subject addressed in the paper is that of modeling and improving the manufacturing workflow for the pipe bending process. Within the research carried out, three models are compared with Petri nets made in the CPN IDE program with the aim of improving the system. The first model represents the initial production flow. The second model improves the sequence of robot movements by introducing additional tasks to the robot serving the production process. The third model introduces a double clamping system, allowing the simultaneous manipulation of two pipes, which leads to a significant increase in productivity. The streamlining of the workflow and improvement of resource use are confirmed by the simulation results.

References


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