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In order to reduce the design flaw and improve the productivity, the model of LED bulb assembly line based on the Fuzzy Hierarchical Petri Net is proposed. The process of LED bulb assembly line is given, and the hierarchical modeling based on FHPN is described. The model of LED bulb assembly line includes three layers and each layer is defined. Through the analysis of the time performance of the model based on FHPN, the optimization model of the LED bulb assembly line is put forward. The experimental result shows that the takt time of the optimization model decreases by 13.3% compared with that of the original model, which increases the production efficiency rate.

Research of LED assembly line Modeling and Optimization based on the Petri Net