Study of Flexible Scheduling System of the Hull Job Shop Based on OOCPN

2009 ◽  
Vol 25 (03) ◽  
pp. 168-173
Author(s):  
Ji Wang ◽  
Yujun Liu ◽  
Zhuoshang Ji ◽  
Yanping Deng ◽  
Yuanyuan Zheng
Keyword(s):  
Petri Net ◽  
Flexible Manufacturing ◽  
Manufacturing System ◽  
Flexible Manufacturing System ◽  
Job Shop ◽  
Object Oriented ◽  
Flexible Scheduling ◽  
Colored Petri Net ◽  
Scheduling System ◽  
Fms Scheduling

The hull job shop in a shipyard is a typical flexible manufacturing system (FMS), the flexibility and efficiency of which largely depends on the level of FMS scheduling. In this paper, the Object-Oriented Colored Petri Net (OOCPN) is used to build the FMS model for the hull job shop. A four-step modeling method of FMS has been developed to successfully simulate the scheduling of the hull job shop.

scholarly journals Modeling and analysis of carousel-based mixed-model flexible manufacturing system using colored Petri net

2019 ◽  
Vol 11 (12) ◽  
pp. 168781401988974
Author(s):  
Hafiz Zahid Nabi ◽  
Tauseef Aized
Keyword(s):  
Petri Net ◽  
System Performance ◽  
Flexible Manufacturing ◽  
Manufacturing System ◽  
Flexible Manufacturing System ◽  
Mixed Model ◽  
Colored Petri Net ◽  
Material Supply ◽  
Work In Process ◽  
Production Resources

This study aims to model, analyze, and evaluate performance of a flexible manufacturing system, constituting a carousel-based manufacturing and assembly cells layout, configured to produce mixed-model multiple products employing inter-/intra-cellular routing flexibility in which manufacturing and assembly resources are subject to working and failure modes. A hierarchical colored Petri net model is developed to analyze performance of the flexible manufacturing system. Colored Petri net modeling experiments have been conducted to evaluate the system performance for throughput, cycle time, and work-in-process. The system performance has been investigated in relation to material supply and handling system, process execution, and production resources reliability variables. Different input factors are considered for simulation modeling such as mean machining time, mean loading/unloading time, mean assembly time, buffer capacity, material supply inter-arrival time, number of operations between failures, and mean time to repair for production resources; a variation in input factors has shown a significant impact on system performance measures. The colored Petri net–based modeling, simulation, and analysis approach has been demonstrated as an efficient method for carousel-based mixed-model configured flexible manufacturing system.

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